STEMME S10 User manual

This aircraft may only be maintained in accordance with the
instructions given in this manual.
CONTACT
STEMME AG
Flugplatzstrasse F2, Nr. 6-7
15344 Strausberg, Germany
Phone: [phone]
Technical Assistance: [email protected]
Web: www.stemme.com
All rights reserved.
Reproduction or disclosure to third parties of this document any
part there of is not permitted, except with the prior and express
written permission of STEMME AG.
DOCUMENT NUMBER:
L500-912850 ISSUE DEC 20, 2016
AMENDMENT: 04
DATE: MAR 20, 2019
CHAPTERPAGE 02
AIRCRAFT MAINTENANCE MANUAL STEMME S10, VARIANT S12

DOCUMENT NUMBER:
L500-912850 ISSUE DEC 20, 2016
AMENDMENT: 02
DATE: OCT 10, 2018
CHAPTERPAGE 03
AIRCRAFT MAINTENANCE MANUAL STEMME S10, VARIANT S12
0.1 RECORD OF AMENDMENTS
Any revision of the present manual must be recorded in the following table, with the exception of:
• Installation status of optional equipment, for optional equipment refer to section 9,
•
Amendments to the original ROTAX Maintenance Manual for the ROTAX 914 F (refer to
Annex E).
The record of amendments in section 0.1and the list of eective pages in section 0.2 are
assigned to an individual aircraft serial number. The indicated amendment no. in the feed line of
these pages does not change with entries after delivery of the aircraft.
Revision of pages must be endorsed in the following list. Necessary amendments, needs to be
mandatory included in the present manual.
The new or amended text will be marked on the revised page by a black vertical line on the right
hand margin;the amendment number and the date will be shown in the outside of the footer page.
The inspector certies by his signature the correspondence of this individual Aircraft Maintenance
Manual and the following list with the aircraft designated by serial number.
Any modication or correction within the approved sections must be signed by the Competent
Authority. Information about amendments which must be inserted in this Manual, are given in
the Record of Airworthiness Directives and Service Bulletins (refer to Annex B).
The original ROTAX Maintenance Manual for the ROTAX 914 F is separately revised by BRP-ROTAX®
GmbH & Co.KG, Austria (refer to Annex E).
The insertion must be signed by the performing person. The actuality and correct insertion of
amendments will be check during the annual airworthiness review.
Am.
No.
Removed
Pages
Inserted
Pages
Date of
Amendment
Reference Approval Date of
Insertion
Signature
00 -- Initial Issue DEC 20, 2016 P061-2017-016
01
0-1, 0-3,
0-5,0-7, 0-8
2-1, 6-4, 6-5,
6-6, 6-7,
6-10,
8-1, D-9
0-1, 0-3,
0-5,0-7, 0-8
2-1, 6-4, 6-5,
6-6, 6-7,
6-10,
8-1, D-9
AUG 28, 2017 P061-2017-094

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DATE: MAR 20, 2019
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AIRCRAFT MAINTENANCE MANUAL STEMME S10, VARIANT S12
0.2 LIST OF EFFECTIVE PAGES
This list is only valid for the serial no. specied on title page. The list contains all amendments
of the maintenance manual, eective until nal approval of this serial no. amendments added
later must be recorded.
PAGE APPROVED AM. NO. DATE
CHAPTER 0
0-1 04 MAR 20, 2019
0-2 04 MAR 20, 2019
0-3 02 OCT 10, 2018
0-4 04 MAR 20, 2019
0-5 04 MAR 20, 2019
0-6 04 MAR 20, 2019
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CHAPTER 1
1-1 04 MAR 20, 2019
1-2 00 DEC 20, 2016
1-3 00 DEC 20, 2016
1-4 04 MAR 20, 2019
1-5 04 MAR 20, 2019
1-6 00 DEC 20, 2016
CHAPTER 2
2-1 01 AUG 28, 2017
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PAGE APPROVED AM. NO. DATE
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CHAPTER 3
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AMENDMENT: 04
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CHAPTER 4
4-1 X 02 OCT 10, 2018
4-2 X 02 OCT 10, 2018
4-3 X 02 OCT 10, 2018
4-4 X 00 DEC 20, 2016
CHAPTER 5
5-1 00 DEC 20, 2016
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AMENDMENT: 04
DATE: MAR 20, 2019
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CHAPTER 6
6-1 00 DEC 20, 2016
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6-4 01 AUG 28, 2017
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6-13 02 OCT 10, 2018
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CHAPTER 7
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AMENDMENT: 04
DATE: MAR 20, 2019
CHAPTERPAGE 08
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CHAPTER 8
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CHAPTER 9
9-1 03 FEB 13, 2019
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CHAPTER 10
10-1 00 DEC 20, 2016
10-2 00 DEC 20, 2016
CHAPTER 11
11-1 02 OCT 10, 2018
11-2 00 DEC 20, 2016
ANNEX A
A-1 03 FEB 13, 2019
A-2 03 FEB 13, 2019
ANNEX B
B-1 00 DEC 20, 2016
B-2 00 DEC 20, 2016
ANNEX C
C-1 03 FEB 13, 2019
C-2 00 DEC 20, 2016
ANNEX D
D-1 00 DEC 20, 2016

AMENDMENT: 04
DATE: MAR 20, 2019
CHAPTERPAGE 09
DOCUMENT NUMBER:
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PAGE APPROVED AM. NO. DATE
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ANNEX E
E-1 00 DEC 20, 2016
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ANNEX F
F-1 03 FEB 13, 2019
F-2 03 FEB 13, 2019
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AMENDMENT: 04
DATE: MAR 20, 2019
CHAPTERPAGE 010
DOCUMENT NUMBER:
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AMENDMENT: 04
DATE: MAR 20, 2019
CHAPTERPAGE 011
DOCUMENT NUMBER:
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AIRCRAFT MAINTENANCE MANUAL STEMME S10, VARIANT S12
0.3 CONTENTS
MANUAL CONTENTS
Maintenance Manual STEMME S10, Variant S12 - FAA........................................................0-1
0.1 Record of Amendments. ............................................................................... 0-3
0.2 List of Eective Pages . ................................................................................. 0-5
0.3 Contents. ...................................................................................................0-11
1. General. ...................................................................................................... 1-1
1.1 remarks on maintenance. .............................................................................. 1-1
1.2 Conversion Table........................................................................................... 1-3
1.3 Abbreviations............................................................................................... 1-4
1.4 Safety symbols. ............................................................................................1-6
2. Description. ................................................................................................. 2-1
2.1 Technical Data. ............................................................................................2-2
2.2 Three View Drawing......................................................................................2-7
3. Description of Assemblies............................................................................... 3-1
3.1 Airframe, Primary and Secondary Structure. ..................................................... 3-1
3.1.1 Wing........................................................................................................... 3-1
3.1.2 Fuselage......................................................................................................3-2
3.1.3 Tail Unit.......................................................................................................3-2
3.2 Cockpit. ......................................................................................................3-2
3.2.1 General. ......................................................................................................3-2
3.2.2 Control Elements and Instruments. .................................................................3-3
3.2.3 Controls at the Instrument Panel.....................................................................3-5
3.2.4 Instrument Panel. .........................................................................................3-5
3.2.5 Instrument Panel with Garmin G3X Touch Instrument Panel. ...............................3-8
3.2.6 Arrangement of Elements on the Instrument Panel. ..........................................3-11
3.3 Flight Control System................................................................................... 3-13
3.3.1 Longitudinal Control.................................................................................... 3-13
3.3.2 Longitudinal Trim (-). .................................................................................. 3-13
3.3.3 Wing Flap Control System............................................................................. 3-13
3.3.4 Lateral Control. .......................................................................................... 3-13
3.3.5 Control of Air Brakes.................................................................................... 3-14
3.3.6 Directional Control...................................................................................... 3-14
3.4 Power-Plant............................................................................................... 3-15
3.4.1 Engine....................................................................................................... 3-15
3.4.2 Lubrication System...................................................................................... 3-16
3.4.3 Cooling System............................................................................................3-17
3.4.4 Air Induction System.................................................................................... 3-18
3.4.5 Engine Exhaust incl. Turbocharger and Attachment.......................................... 3-18
3.4.6 Fuel System................................................................................................ 3-19
3.4.6.1 Fuel System Related Controls and Indication System. ....................................... 3-19
3.4.6.2 Fuel System Design...................................................................................... 3-20

AMENDMENT: 04
DATE: MAR 20, 2019
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3.4.6.3 Fuel System of the Fuselage.......................................................................... 3-20
3.4.6.4 Electrical Layout and Operation of the Fuel Pumps. ..........................................3-21
3.4.7 Engine Controls and Instrumentation............................................................. 3-23
3.4.8 Fire Protection............................................................................................ 3-23
3.4.9 Engine Cowlings. ........................................................................................ 3-24
3.4.10 Propeller.................................................................................................... 3-24
3.4.10.1 Design of Variable Pitch Propeller. ................................................................. 3-25
3.4.10.2 Propeller Blades.......................................................................................... 3-25
3.4.10.3 Propeller Blade Angle Control Mechanism....................................................... 3-25
3.4.10.4 Propeller Weight Balance. ............................................................................ 3-28
3.4.10.5 Expansion Element and Control System.......................................................... 3-29
3.4.10.6 Identication of Propeller System and Assembly. ............................................. 3-30
3.4.11 Power Transmission. ....................................................................................3-30
3.4.12 Forward Propeller Reduction Gearbox. ........................................................... 3-30
3.4.13 Operation Mechanism of the Propeller Folding System...................................... 3-31
3.4.13.1 Nose-cone. ................................................................................................ 3-31
3.4.13.2 Propeller Positioning.................................................................................... 3-31
3.4.13.3 Propeller Brake. .......................................................................................... 3-32
3.4.14 Fluids. ....................................................................................................... 3-32
3.4.14.1 Fuel. ......................................................................................................... 3-32
3.4.14.2 Coolant Fluid.............................................................................................. 3-34
3.4.14.3 Lubricants. ................................................................................................ 3-35
3.5 Landing Gear.............................................................................................. 3-37
3.5.1 Main Landing Gear...................................................................................... 3-37
3.5.2 Tail Wheel. ................................................................................................. 3-38
3.6 Flight Control Instruments, Pitot Static System................................................ 3-39
3.7 Electrical System......................................................................................... 3-41
3.7.1 General System Architecture......................................................................... 3-41
3.7.2 DC Generation (ATA 24-30-00)...................................................................... 3-44
3.7.2.1 Main System DC Power Generation................................................................ 3-44
3.7.2.2 Engine System DC Power Generation.............................................................. 3-45
3.7.2.3 Over Voltage Protection. ..............................................................................3-46
3.7.3 DC Indication (ATA 24-37-00)........................................................................3-46
3.7.3.1 Description. ...............................................................................................3-46
3.7.4 Parts Specication......................................................................................3-46
3.7.5 Operation..................................................................................................3-46
3.7.6 DC Power Distribution System (ATA 24-60-00)................................................. 3-47
3.7.6.1 Wire Specications...................................................................................... 3-47
3.7.6.2 Design of Electrical Connections. .................................................................. 3-47
3.7.6.3 Protection Devices. .....................................................................................3-48
3.7.6.4 Fuse and CB Specications: Main System........................................................ 3-49
3.7.6.5 Fuse Specications: Engine System. ............................................................... 3-53
3.7.7 Switching Devices. ...................................................................................... 3-56

AMENDMENT: 04
DATE: MAR 20, 2019
CHAPTERPAGE 013
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3.7.7.1 Manual Switches......................................................................................... 3-56
3.7.7.2 Electromechanical Relays............................................................................. 3-57
3.7.7.3 Semiconductor Switch Box. .......................................................................... 3-57
3.7.8 Main System Distribution Box........................................................................3-58
3.7.8.1 Main System Distribution Box (Eectivity S/N 12-001 - S/N 12-025).....................3-58
3.7.8.2 Main System Distribution Box (Eectivity S/N 12-026 - S/N 12-999). ...................3-58
3.7.9 Engine System Distribution Box. ....................................................................3-59
3.7.9.1 Engine System Distribution Box (Eectivity S/N 12-001 - S/N 12-025)...................3-59
3.7.9.2 Engine System Distribution Box (Eectivity S/N 12-026 - S/N 12-999)..................3-60
3.7.10 TCU Board. ................................................................................................ 3-63
3.7.11 Instrument Panel Bus System........................................................................3-64
3.7.12 Engine Starting System (ATA 80-00-00).......................................................... 3-65
3.7.12.1 Description. ...............................................................................................3-65
3.7.12.2 Parts Specication...................................................................................... 3-65
3.7.12.3 Operation..................................................................................................3-65
3.7.13 Engine Ignition System (ATA 74-00-00)...........................................................3-66
3.7.13.1 Description. ...............................................................................................3-66
3.7.13.2 Parts Specication......................................................................................3-66
3.7.13.3 Operation..................................................................................................3-66
3.7.14 Engine RPM Indicating System (ATA 77-14-00)................................................. 3-67
3.7.14.1 Description. ............................................................................................... 3-67
3.7.14.2 Parts Specication...................................................................................... 3-67
3.7.14.3 Operation.................................................................................................. 3-67
3.7.15 Cylinder Head Temperature Indicating System (ATA 77-22-00). .......................... 3-67
3.7.15.1 Description. ............................................................................................... 3-67
3.7.15.2 Parts Specication......................................................................................3-68
3.7.15.3 Operation..................................................................................................3-68
3.7.16 Oil Pressure Indicating System (ATA 79-31-00).................................................3-68
3.7.16.1 Description. ...............................................................................................3-68
3.7.16.2 Parts Specication......................................................................................3-68
3.7.16.3 Operation..................................................................................................3-68
3.7.17 Oil Temperature Indicating System (ATA 79-33-00)...........................................3-69
3.7.17.1 Description. ...............................................................................................3-69
3.7.17.2 Parts Specication......................................................................................3-69
3.7.17.3 Operation..................................................................................................3-69
3.7.18 Fuel Distribution System (ATA 28-20-00).........................................................3-69
3.7.18.1 Description. ...............................................................................................3-69
3.7.18.2 Parts Specication...................................................................................... 3-70
3.7.18.3 Operation.................................................................................................. 3-70
3.7.18.4 Transfer Pump Control and Tank Selection. ..................................................... 3-70
3.7.19 Fuel Quantity Indication (ATA 28-40-00)..........................................................3-71
3.7.19.1 Description. ................................................................................................3-71
3.7.19.2 Parts Specication.......................................................................................3-71

AMENDMENT: 04
DATE: MAR 20, 2019
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DOCUMENT NUMBER:
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AIRCRAFT MAINTENANCE MANUAL STEMME S10, VARIANT S12
3.7.19.3 Operation.................................................................................................. 3-71
3.7.20 Fuel Pressure Indicating (ATA 73-32-00).......................................................... 3-71
3.7.20.1 Description. ............................................................................................... 3-71
3.7.20.2 Parts Specication...................................................................................... 3-72
3.7.20.3 Operation.................................................................................................. 3-72
3.7.21 Fire Detection System (ATA 26-12-00)............................................................. 3-72
3.7.21.1 Description. ............................................................................................... 3-72
3.7.21.2 Parts Specication...................................................................................... 3-72
3.8 COM and NAV Equipment............................................................................. 3-73
3.8.1 COM Equipment. ........................................................................................ 3-73
3.8.2 ATC Equipment........................................................................................... 3-73
3.8.3 TAS Equipment. .......................................................................................... 3-73
3.8.4 Emergency Locator Equipment...................................................................... 3-73
3.8.5 Soaring Computer Equipment....................................................................... 3-74
3.9 Integrated Modular Avionics (ATA 42-00)........................................................ 3-75
3.10 Oxygen System........................................................................................... 3-77
3.11 Wing Folding Device. ................................................................................... 3-79
3.12 2nd Main System Battery. .............................................................................. 3-81
4. Airworthiness Limitations Section. .................................................................. 4-1
4.1 General. ......................................................................................................4-2
4.2 Maintenance Limitations. ..............................................................................4-2
4.2.1 Paint Finish. .................................................................................................4-2
4.3 Component Replacement and Overhaul Limitations...........................................4-3
4.4 Structural Limitations....................................................................................4-3
5. Time Limits /Maintenance Checks. .................................................................. 5-1
5.1 Overhaul and Replacement Schedule. ..............................................................5-2
5.2 Pre-Flight Inspections....................................................................................5-7
5.2.1 Rubber Hose and Clamp Integrity....................................................................5-7
5.3 Periodic Inspections.......................................................................................5-7
5.3.1 Inspection Intervals...................................................................................... 5-8
5.3.2 General Remarks on Periodic Inspections........................................................ 5-10
5.3.3 Special Conditions and Cautionary Notice. ......................................................5-11
5.3.4 General Remarks on Maintenance. .................................................................5-11
5.3.5 Inspection Groups and Maintenance Criteria................................................... 5-13
5.3.6 Other Particulars of Maintenance.................................................................. 5-16
5.4 Check List for Periodic Inspections................................................................. 5-17
5.4.1 General. .................................................................................................... 5-18
5.4.2 Wings and Fuel System Components in the Wing Center Section. ....................... 5-19
5.4.3 Forward Fuselage........................................................................................ 5-20
5.4.4 Cockpit. .................................................................................................... 5-21
5.4.5 Center Fuselage (except for fairings). ............................................................ 5-23
5.4.6 Tail Boom................................................................................................... 5-24
5.4.7 Empennage................................................................................................ 5-25

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AIRCRAFT MAINTENANCE MANUAL STEMME S10, VARIANT S12
5.4.8 Fuel System Components in the Fuselage........................................................ 5-26
5.4.9 Engine and Engine Mountings....................................................................... 5-27
5.4.10 Lubrication System...................................................................................... 5-29
5.4.11 Cooling System (Liquid Cooling, Ram Air Cooling)............................................5-30
5.4.12 Air Induction System....................................................................................5-30
5.4.13 Engine Controls & Monitoring........................................................................ 5-31
5.4.14 Center Fuselage Fairing, Engine Cowlings and Firewall...................................... 5-32
5.4.15 Propeller.................................................................................................... 5-33
5.4.16 Drive Shaft with Propeller Reduction Gear....................................................... 5-35
5.4.17 Main Landing Gear......................................................................................5-36
5.4.18 Tail Wheel. ................................................................................................. 5-37
5.4.19 Flight Instrumentation and Pitot/Static Systems. ............................................ 5-38
5.4.20 Electric System (except for engine and TCU). .................................................. 5-38
5.4.21 Avionics..................................................................................................... 5-39
5.4.22 Completion Tasks........................................................................................ 5-39
5.4.23 Optional Equipment. ...................................................................................5-40
5.5 Special Inspections...................................................................................... 5-43
5.5.1 Inspection Following a Heavy Landing or a Wing Tip Landing. ............................ 5-43
5.5.2 Inspection Following an Impact to the Rotating Propeller.................................. 5-43
5.5.3 Inspection following Exceptional Events with Wing Folding Device......................5-44
5.5.4 Approval of Software Levels of Autopilot Systems.............................................5-45
5.5.5 Lubrication Ignition-Starter-Switch ...............................................................5-45
5.6 Unscheduled Maintenance. .......................................................................... 5-47
5.6.1 Airworthiness Directives and Service Bulletins. ................................................ 5-47
5.6.2 Abnormal Operations. ................................................................................. 5-47
5.6.3 Unscheduled Maintenance for Propeller Assembly,
Engine Drive Section, and Front Gear Box Components. .................................... 5-47
6. Maintenance Instructions, Tolerances, Adjustment Data for the Aircraft................6-1
6.1 General Remarks. .........................................................................................6-1
6.2 Towing on ground, Jack Points and Lifting. .......................................................6-1
6.3 Determination of Empty Weight and Corresponding
Center of Gravity; Weight Limits......................................................................6-3
6.4 Flight Control System.................................................................................... 6-8
6.4.1 Deection of Control Surfaces, Control System Friction, and Control Forces.......... 6-8
6.4.1.1 Control Surface Deections........................................................................... 6-8
6.4.1.2 Friction in Control System.............................................................................. 6-9
6.4.1.3 Pilot Forces. ................................................................................................ 6-9
6.4.2 Weights and Moments of Control Surfaces...................................................... 6-10
6.4.3 Free Play in Flight Control System.................................................................. 6-10
6.5 Lubrication. ................................................................................................6-11
6.5.1 General Remarks. ........................................................................................6-11
6.5.2 Lubrication Plan. ........................................................................................ 6-12
6.6 Surface of Composite Structures. .................................................................. 6-13
6.7 Drainage and Ventilation Holes..................................................................... 6-15

AMENDMENT: 04
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AIRCRAFT MAINTENANCE MANUAL STEMME S10, VARIANT S12
6.8 Tightening Torques of Screwed Joints. ............................................................ 6-15
7. Maintenance Instructions, Tolerances and Adjustment
Data for Assemblies/Equipment. .................................................................... 7-1
7.1 Airframe...................................................................................................... 7-1
7.1.1 Wing........................................................................................................... 7-1
7.1.1.1 Cracks and Structural Damage. ...................................................................... 7-1
7.1.1.2 Drainage and Ventilation Holes....................................................................... 7-1
7.1.1.3 Wing Fittings................................................................................................ 7-1
7.1.1.4 Flaps and Ailerons. .......................................................................................7-2
7.1.2 Fuselage......................................................................................................7-3
7.1.2.1 Cracks and Structural Damage. ......................................................................7-3
7.1.2.2 Drainage Holes.............................................................................................7-3
7.1.2.3 Nose-cone. ..................................................................................................7-3
7.1.2.4 Center Fuselage............................................................................................7-4
7.1.3 Empennage..................................................................................................7-4
7.1.3.1 General Condition.........................................................................................7-4
7.1.3.2 Vertical Tail..................................................................................................7-5
7.1.3.3 Horizontal Tail. .............................................................................................7-6
7.1.3.4 Weights and Static Hinge Moments of Control Surfaces......................................7-6
7.2 Cockpit. ......................................................................................................7-7
7.2.1 Canopy........................................................................................................7-7
7.2.1.1 Condition and Function. ................................................................................7-7
7.2.1.2 Test of Canopy Emergency Jettison..................................................................7-7
7.2.1.3 Re-Installation of the Canopy. ........................................................................7-8
7.2.2 Equipment and Systems.................................................................................7-9
7.2.2.1 Seat Belts. ...................................................................................................7-9
7.2.2.2 Instruments and Switches. .............................................................................7-9
7.2.2.3 Air Hoses. ....................................................................................................7-9
7.2.2.4 Seats. .........................................................................................................7-9
7.3 Controls. ................................................................................................... 7-10
7.3.1 Controls in Fuselage. ................................................................................... 7-10
7.3.2 Controls in the Wing.....................................................................................7-11
7.3.3 Controls in Tail Cone/Vertical Tail...................................................................7-11
7.3.4 Deection of Control Surfaces, Control System Friction, Control Forces. ...............7-12
7.3.5 Free Play of Control System Bearings...............................................................7-12
7.4 Power-Plant................................................................................................7-13
7.4.1 Engine........................................................................................................7-13
7.4.1.1 General. .....................................................................................................7-13
7.4.1.2 Removal and Installation of The Engine. ......................................................... 7-14
7.4.1.3 Cleaning of the Engine................................................................................. 7-15
7.4.1.4 Visual Check of Engine................................................................................. 7-15
7.4.1.5 Leakage Check. .......................................................................................... 7-15
7.4.1.6 Inspection of External Engine Components. .................................................... 7-15

AMENDMENT: 04
DATE: MAR 20, 2019
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DOCUMENT NUMBER:
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AIRCRAFT MAINTENANCE MANUAL STEMME S10, VARIANT S12
7.4.1.7 Check of Waste-Gate. ................................................................................. 7-15
7.4.1.8 Check of Gearbox. ...................................................................................... 7-16
7.4.1.9 Inspection of the Magnetic Plug.................................................................... 7-16
7.4.1.10 Examination of Drive Gear Set....................................................................... 7-16
7.4.1.11 Check of the Carburetor............................................................................... 7-16
7.4.1.12 Check of Engine Wiring.................................................................................7-17
7.4.1.13 Check of V-Belt Tension. ...............................................................................7-17
7.4.1.14 Replacement of Spark Plugs. .........................................................................7-17
7.4.1.15 Checking of Spark Plug Connector..................................................................7-17
7.4.1.16 Check of Compression. .................................................................................7-17
7.4.1.17 Test Run of Engine....................................................................................... 7-18
7.4.1.18 Inspection of Engine Mountings. ................................................................... 7-18
7.4.2 Lubrication System...................................................................................... 7-18
7.4.2.1 Visual and Leakage Check of Oil System......................................................... 7-18
7.4.2.2 Oil Level Check. .......................................................................................... 7-19
7.4.2.3 Oil Change................................................................................................. 7-19
7.4.2.4 Oil lter - Replacement and Inspection. ......................................................... 7-19
7.4.3 Cooling System........................................................................................... 7-19
7.4.3.1 Visual and Leakage Check of the System. ....................................................... 7-19
7.4.3.2 Flushing of Cooling System........................................................................... 7-20
7.4.3.3 Coolant Replacement.................................................................................. 7-20
7.4.3.4 Ram Air Cooling...........................................................................................7-21
7.4.4 Air Induction System.....................................................................................7-21
7.4.4.1 Intercooler and Air box..................................................................................7-21
7.4.4.2 Air lter......................................................................................................7-21
7.4.5 Exhaust System. ..........................................................................................7-21
7.4.5.1 Turbocharger/Muer Mountings. ..................................................................7-21
7.4.5.2 Exhaust Headers......................................................................................... 7-22
7.4.5.3 Heat Insulation........................................................................................... 7-22
7.4.6 Fuel System................................................................................................ 7-23
7.4.6.1 Fuel System in the Wing. .............................................................................. 7-24
7.4.6.2 Fuel System in the Fuselage. ......................................................................... 7-25
7.4.7 Engine Controls/Monitoring. ........................................................................ 7-26
7.4.8 Fire Protection............................................................................................ 7-28
7.4.8.1 Cowling-Fire Protective Painting. .................................................................. 7-28
7.4.8.2 Fire Protective Sleeves.................................................................................. 7-29
7.4.8.3 Firewall. .................................................................................................... 7-29
7.4.9 Cowlings.................................................................................................... 7-29
7.4.10 Propeller.................................................................................................... 7-30
7.4.10.1 General. .................................................................................................... 7-30
7.4.10.2 Adjustment and Inspection Results, Tolerances.................................................7-31
7.4.10.3 Visual Inspection of the Propeller Unit.............................................................7-31
7.4.10.4 Removal of the Propeller Unit. ...................................................................... 7-32

AMENDMENT: 04
DATE: MAR 20, 2019
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DOCUMENT NUMBER:
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AIRCRAFT MAINTENANCE MANUAL STEMME S10, VARIANT S12
7.4.10.5 Installation of the Propeller Unit. .................................................................. 7-33
7.4.10.6 Spring Tension of the Propeller Folding Mechanism........................................... 7-34
7.4.10.7 Checking of Pitch Control and Adjusting the Variable Pitch Propeller. ................. 7-35
7.4.10.8 General Aspects of the Electrical Circuit. ........................................................ 7-36
7.4.10.9 Adjustment of the Electrical Switch for the
Take-O Setting Indicator and Stop Switch..................................................... 7-36
7.4.10.10 Dynamic Balancing. .................................................................................... 7-37
7.4.11 Drive Shaft System. ..................................................................................... 7-37
7.4.12 Propeller Gearbox, Mounting and Support....................................................... 7-38
7.4.13 Propeller Operation..................................................................................... 7-40
7.5 Landing Gear.............................................................................................. 7-41
7.5.1 Main Landing Gear...................................................................................... 7-41
7.5.1.1 General. .................................................................................................... 7-41
7.5.1.2 Functional Test of the Retractable Landing Gear.............................................. 7-42
7.5.1.3 Functional Check of Emergency Undercarriage Extension. ................................ 7-44
7.5.1.4 Tires, Condition and Ination Pressure. .......................................................... 7-45
7.5.1.5 Adjustment and Bleeding of the Wheel Brake System. ...................................... 7-45
7.5.1.6 Replacement of Brake Lining. .......................................................................7-46
7.5.1.7 Removal and Installation of Landing Gear Legs. .............................................. 7-46
7.5.2 Tail Wheel. ................................................................................................. 7-46
7.6 Flight Control Instruments and Pitot and Static Pressure System. ....................... 7-47
7.6.1 Calibration of Stall Warning System (Optional)................................................7-48
7.6.2 Maintenance on the Static Pressure System. ...................................................7-48
7.7 Electrical System......................................................................................... 7-49
7.7.1 General. .................................................................................................... 7-49
7.7.2 Batteries. .................................................................................................. 7-49
7.7.3 Grounding. ................................................................................................ 7-50
7.7.4 E-Boxes. .................................................................................................... 7-50
7.7.5 Ignition switch.............................................................................................7-51
7.8 Communication and Navigation Equipment. .................................................. 7-53
7.8.1 COM Equipment. ........................................................................................ 7-54
7.8.2 ATC Equipment........................................................................................... 7-54
7.8.3 TAS Equipment. .......................................................................................... 7-55
7.8.4 Emergency Locator Equipment...................................................................... 7-55
7.8.5 Integrated Modular Avionics. ........................................................................ 7-56
7.8.6 Soaring Computer Equipment....................................................................... 7-58
7.9 Optional - Oxygen Equipment....................................................................... 7-59
7.10 Optional - Wing Folding Device. ....................................................................7-60
7.11 Optional - 2nd Main System Battery. ...............................................................7-60
8. List of Placards and their Positions. .................................................................8-1
8.1 Placards in the Cockpit, Front. ........................................................................ 8-1
8.2 Placards in the Cockpit, Rear..........................................................................8-7
8.3 Placards on Fuselage.................................................................................... 8-8

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DOCUMENT NUMBER:
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AIRCRAFT MAINTENANCE MANUAL STEMME S10, VARIANT S12
9. Equipment...................................................................................................9-1
9.1 Minimum Equipment List. .............................................................................. 9-1
9.2 Supplementary Equipment. ............................................................................9-3
9.3 Additional Equipment and Systems..................................................................9-3
9.3.1 Additional Equipment....................................................................................9-3
9.3.2 Optional Systems......................................................................................... 9-5
10. List of Special Tools. .....................................................................................10-1
11. List of Maintenance Documents for Parts Being Approved
Independently from the Aircraft..................................................................... 11-1
Annex A: Supplementary Instructions for Maintenance and Care,
Maintenance Instructions...............................................................................A-1
Annex B: Service Bulletins, Airworthiness Directives.........................................................B-1
Annex C: Documents (Inspection and Operation Reports)................................................C-1
Annex D: Maintenance and Inspection Forms. ................................................................D-1
Annex E: Maintenance Manual (Line Maintenance) for ROTAX Engine Type 914 Series........... E-1
Annex F: Technical Drawings. ...................................................................................... F-1
a) Flight Controls - Pitch Control and Trim......................................................................F-5
b) Flight Controls - Lateral Control (Wing, Flap, Aileron)...................................................F-7
c) Flight Controls - Airbrake Control. .............................................................................F-9
d) Flight Controls - Rudder Control...............................................................................F-11
e) ...........................................................................................................................F-13
f) Propulsion System. .................................................................................................F-15
1. Upper Cover Tunnel Unit. .........................................................................................F-17
2. Control Stick Grip. ................................................................................................. F-19
3. 7 Channel MOSFET-Box............................................................................................F-21
4. S12 Block Diagram Electrical System......................................................................... F-23
5. S12 Main System - DC Generation............................................................................. F-25
6. S12 Main System - DC Generation. ........................................................................... F-27
7. S12 Main System - Landing Gear............................................................................... F-29
8. S12 Main System - Landing Gear. ..............................................................................F-31
9. S12 Main System - Electrical Trim.............................................................................. F-33
10. S12 Main System - Autopilot................................................................................... F-35
11. S12 Main System - Fire Warning............................................................................... F-37
12. S12 Main System - Lighting. ................................................................................... F-39
13. S12 Main System - Lighting - FLARM ACL...................................................................F-41
14. S12 Transponder and Trac Display S12 Ultimate Europe. ........................................... F-43
15. S12 Transponder and Trac Display S12 Ultimate USA. ............................................... F-45
16. S12 Main System - Communication Radio................................................................. F-47
17. S12 Engine System - DC generation.......................................................................... F-49
18. S12 Engine System - DC generation..........................................................................F-51
19. S12 Engine System - Engine Monitoring and Control................................................... F-53
20. S12 Engine System - Engine Monitoring and Control. ................................................. F-55
21. S12 Engine System - Fuel Pumps and Indication......................................................... F-57
22. S12 Engine System - Propeller Control...................................................................... F-59

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AIRCRAFT MAINTENANCE MANUAL STEMME S10, VARIANT S12
23.S12 Engine System - Propeller Control. ..................................................................... F-61
24. S12 Main System - Garmin DC Generation................................................................ F-63
25. S12 Main System - Garmin G3x Touch System............................................................ F-65
26. S12 Transponder and Trac Display S12 Garmin G3X Europe. ...................................... F-67
27. S12 Transponder and Trac Display S12 Garmin G3X USA............................................ F-69
28. S12 Engine System - Garmin DC Generation. .............................................................F-71
29. S12 Engine System - Garmin Engine Monitoring and Control. ...................................... F-73
30. S12 Engine System - Garmin Fuel Pumps and Indication............................................. F-75
31. S12 Pitot Static System S12. .................................................................................... F-77
32. S12 Main System - Second Main Battery................................................................... F-79
33. S12 Main System - Second Main Battery Diagram Page 1/2. ........................................ F-81
33. S12 Main System - Second Main Battery Diagram Page 2/2. ........................................ F-83
34. S12 Transponder and Trac Display S12 Ultimate Europe S/N 12-019 Only...................... F-85
35. S12 Transponder and Trac Display S12 Ultimate USA S/N 12-016 Only Page 1/2. ............ F-87
35. S12 Transponder and Trac Display S12 Ultimate USA S/N 12-016 Only Page 2/2............. F-89