Storm Century S-LSA User manual

MAINTENANCE MANUAL
STORM Century S-LSA
STORM Century S-LSA STORMAIRCRAFT
MAINTENANCE MANUAL
AIRCRAFT STORM Century S-LSA
SERIAL N°
CLASS
STORMAIRCRAFT
DATE : 11-14-2005
SEVICE BULLETIN
STORM Century S-LSA
This manual contains all the information concerning maintenance and periodic overhauls as
suggested by STORMAIRCRAFT
This manual contains PROJECT DATA AND DRA26 PSIS which are exclusive property of
STORMAIRCRAFT. No part of this manual shall be: divulged, reproduced or transmitted in
any way and by no electronically or manual mean, including photocopies and recordings,
for no purpose without the written consent of STORMAIRCRAFT

MAINTENANCE MANUAL
STORM Century S-LSA
STORM Century S-LSA STORMAIRCRAFT
INDEX
1GENERAL 1.1
1.1 Equipment list 1.2
1.2 Sources to purchase parts 1.8
1.3 List of disposable replacement parts 1.9
1.4 Engine specifications 1.10
1.5 Weight and balance information 1.12
1.6 Tire inflation pressure 1.16
1.7 Approved oils and capacities 1.16
1.8 Recommended fastener torque values 1.17
1.9 General safety information 1.21
1.10 Transmitting safety of flight concerns to STORMAIRCRAFT 1.24
2INSPECTIONS 2.1
2.1 Powercheck 2.3
2.2 Engine compartment 2.4
2.3 Engine 2.5
2.4 Propeller 2.6
2.5 Cockpit 2.7
2.6 Surface and structure check 2.9
2.7 Landing gear 2.10
2.8 Fuselage-Airframe-Cockpit inspection 2.11
2.9 Engine-Nacelle-Landing gear inspection 2.12
2.10 Wing-Stabilizer-propeller-radio set inspection 2.13
2.11 Airworthiness prescriptions and power check 2.14
2.12 System and Avionics maintenance 2.15
2.13 Functional test 2.16
2.14 Daily Inspection 2.18
3 STRUCTURES 3.1
3.1 Description of flight controls 3.1
3.1.1 Flight controls inspection 3.2
3.1.2 Flap Control 3.3
3.2 Removal-Installation 3.4
3.2.1 Wing 3.4
3.2.2 Flap 3.6
3.2.3Aileron 3.9
3.2.4 Rudder 3.11
3.2.5 Rudder cables 3.14
3.2.6 Stabilator 3.16
3.2.7 Trim control 3.21
3.3 Control stop and regulation 3.23
3.3.1 Lubrication and controls check 3.24
3.4 Landing gear 3.24
3.4.1 Landing gear and brake system faults 3.25
3.4.2 Main landing gear removal 3.25
3.4.3 Brake system 3.28
3.5 Steerable nose gear 3.30
3.5.1 Steerable nose gear removal 3.31
3.6 Seat belts 3.34

MAINTENANCE MANUAL
STORM Century S-LSA
STORM Century S-LSA STORMAIRCRAFT
4ENGINE 5.1
5 FUEL SYSTEM 5.1
5.1 Fuel System diagram 5.2
5.2 Fuel System fittings 5.6
5.2.1 Fitting removal and installation 5.7
5.3 Shut off fuel valve 5.8
5.4 Fuel switch 5.8
5.5 Fuel and air circuit in the carburetor 5.9
5.6 Fuel System main components 5.10
6PROPELLER 7.1
7 UTILITY SYSTEM 7.1
Cabin heat system 7.1
8 INSTRUMENTS AND AVIONICS 8.1
8.1 Instrument panel 8.2
8.2 Main Instruments 8.6
8.3 Radio 8.9
8.4 Transponder 8.13
8.4.1 K60 Transponder antenna installation 8.22
8.5 System presetting for GPS unit 8.23
9 ELECTRIC SYSTEM 9.1
10 STRUCTURAL REPAIR 10.1
10.1 Engine faults 10.2
10.2 Propeller faults 10.6
10.3 Electrical System faults 10.7
10.4 Flight and engine instruments faults 10.8
10.5 Landing gear and brake system faults 10.9
10.6Repair 10.10
10.7 Additional installations maintenance and repairing 10.12
10.7.1 Throttle 10.12
10.7.2 Electric flap actuator 10.13
10.7.3 Firewall electric panel 10.15
10.7.4 Controls 10.16
10.7.4.1 Control stick 10.16
10.7.4.2 Stabilator control 10.16
10.7.4.3 Aileron control 10.17
11 PAINTING 11.1
12REVISIONS 12.1
13 FEEDBACK FORM 13.1

MAINTENANCE MANUAL
STORM Century S-LSA
STORM Century S-LSA STORMAIRCRAFT
CHAPTER 1
GENERAL
This manual contains all the necessary information to perform the periodic overhaul and the
maintenance, and for all other operations needed for STORM S-LSA aircraft.
This manual includes the information concerning the aircraft, its construction and its components.
For all operations on the engine, though included in this manual, and for some periodic operations,
please refer to the engine manual:
OPERATOR'S MANUAL FOR THE ROTAX 912 – 912 S
For all the operations concerning the propeller, though included in this manual, for its installation
and for some specific operations please refer to the instructions and recommendations of the
manufacturers: WOODCOMP - WARPDRIVE
For all the operations concerning the components such as: hubs – wheels – brakes –
pumps – filters – pulleys – cables – pipes – bolts – rivets – extrusions – fusions etc.,
please follow the manufacturer’s instructions and recommendations.
NOTE: The military specifications listed in the MAINTENANCE MANUAL are not
compulsory, but they are considered a satisfactory choice of the materials.- The products of
major material producers meet or exceed these specifications.

MAINTENANCE MANUAL
STORM Century S-LSA
STORM Century S-LSA STORMAIRCRAFT
1.1 Equipment list: Datum Firewall
NOTE : (*) ROTAX 912 ULS DRY ENGINE WEIGHT INCLUDES REDUCER-CLUTCH-GENERATOR-
CARBURETORS-OIL TANK-ELECTRIC SYSTEM
A. POWERPLANT UNIT
ITEM
NR.
X=INST
Or 0=
NOT
INST
DESCRIPTION BUILDER
and P/N Q.TY WEIGHT
lbs ARM
inches
A-01 X
STANDARD ENGINE
(*)
BOMBARDIER-ROTAX
type 912 ULS
P/N
01 129,58 -23
A-02 X STARTER 12v/0,6 kW BOMBARDIER-ROTAX
P/N 293 157 01 2,64 -14,1
A-03 X WARM INLET AIR FILTER STA
P/N 825 711 01 0,33 -13
A-04 X COLD INLET AIR FILTER STA
P/N 825 711 01 0,33 -11,8
A-05 X AIR BOX SYSTEM STA
P/N A - 14 01 2,42 -13
A-06 X OIL COOLER STA
P/N 1RARXOL001 01 1,1 -28,7
A-07 X COOLANT RADIATOR STA
P/N 1RARXAQ001 01 2,2 -7,8
A-08 X PROPELLER & SPINNER WOODCOMP
P/N SR200 01 8,734 -35,4
A-09 X ELECTRIC PUMP STA
P/N A1ACMOPB001 01 1,76 In Firewall
A-10 X FUEL FILTER
GASCOLATOR STA P/N ACMOFB001 01 0,5456 In Firewall
A-11 X CABIN HEAT SYSTEM STA
P/N SL605000/55 01 0,77 In Firewall
A-12 X UPPER ENGINE COWL STA
P/N 08-010-20/R 01 5,28 -17,7
A-13 X LOWER ENGINE COWL STA
P/N 08-010-10/R 01 7,26 -17,7
A-14 X FUEL PIPES 1/4” AND
AS1072C PROTECTION STA P/N MIL-H-6000-4 01 16,0292 -15,7
A-15 X EXHAUST MANIFOLDS
AND MUFFLER BOMBARDIER-ROTAX
P/N 777 663 01 8,8 -9
A-16 X ENGINE RING MOUNT –
SILENT BLOCK STA
P/N 07-020-00 01 19,14 -7,1
A-17 X FLOAT CHAMBER BOMBARDIER-ROTAX
P/N 874 300 01 0,66 In Firewall

MAINTENANCE MANUAL
STORM Century S-LSA
STORM Century S-LSA STORMAIRCRAFT
B. LANDING GEAR UNIT
ITEM
NR.
X=INST
Or 0=
NOT
INST
DESCRIPTION BUILDER
and P/N Q.TY WEIGHT
lbs ARM
inches
B-01 X 5” MAIN WHEEL MATCO
WHLW51S1.25 02 2,42 55,1
B-02 X MAIN WHEELS TIRE MCCREARY
P/N 06-08300 02 1,98 55,1
B-03 X 5” MAIN WHEEL TUBE MATCO
P/N TIRTU500X5 02 3,96 55,1
B-04 X BRAKE DISC ASSY MATCO
P/N WHLB45-4 02 8,58 55,1
B-05 X MAIN WHEEL AXLE STA
P/N SL500000-22/05 02 2,86 55,1
B-06 X MAIN WHEEL FAIRING STA
P/N SL500000-03/00 02 2,86 55,1
B-07 X 4” NOSE WHEEL MATCO
P/N TIRT4.00X4-6 01 3,96 -9,4
B-08 X NOSE WHEEL
TIRE MATCO P/N TIRT4.00X4-6 01 2,42 -9,4
B-09 X 4” NOSE WHEEL TUBE STA
TUB4.00X4 01 1,98 -9,4
B-10 X NOSE WHEEL AXLE STA
P/N SL503000-02/03 01 2,86 55,1
B-11 X NOSE WHEEL FAIRING STA
P/N SL500000-03/00 01 3,96 -9,4

MAINTENANCE MANUAL
STORM Century S-LSA
STORM Century S-LSA STORMAIRCRAFT
C. POWER UNIT
ITEM
NR.
X=INST
Or 0=
NOT
INST
DESCRIPTION BUILDER
and P/N Q.TY WEIGHT
lbs ARM
inches
C-01 X BATTERY FIAMM
P/N 911767 01 11,66 In Firewall
C-02 X VOLTAGE REGULATOR DUCATI 12 VDC
P/N 965 347 01 0,22 In Firewall
C-03 0 LANDING LIGHT STA
P/N AS11-04800 01 0,44 -6,3
C-04 X TAIL STROBE LIGHT STA
P/N TSL-002 01 3,52 222,4
C-05 0 ANTICOLLISION LIGHT STA
P/N ACL-002 01 0,484 43,3
C-06 X STABILATOR ELECTRIC
TRIM ACTUATOR RAY ALLEN T2/7A 01 0,275 211,4
C-07 0 RUDDER ELECTRIC TRIM
ACTUATOR RAY ALLEN T2/7A 01 0,484 212,6
C-08 X ELECTRIC LIGHTER STA
P/N 1ELALPC001 01 0,22 17,3
C-09 X BATTERY RELAY STA
P/N 1ELCDET001 01 0,22 -194,9
C-10 X STARTER RELAY BOMBARDIER-ROTAX
P/N 992 819 01 0,22 In Firewall
C-11 X CONDENSER STA
P/N 1ELCDET001 01 0,066 In Firewall

MAINTENANCE MANUAL
STORM Century S-LSA
STORM Century S-LSA STORMAIRCRAFT
D. INSTRUMENTS
ITEM
NR.
X=INST
Or 0=
NOT
INST
DESCRIPTION BUILDER
and P/N Q.TY WEIGHT
lbs ARM
inches
D-01 X AIR SPEED INDICATOR STA
P/N 1STVOAG010 01 0,748 17
D-02 X VERTICAL SPEED
INDICATOR STA
P/N 1STVOAG008 01 0,704 17
D-03 X ALTIMETER STA
P/N 1STVOAG001 01 1,254 17
D-04 X TURN & BANK INDICATOR STA
P/N 1STVOAG009 01 0,11 17
D-05 X COMPASS STA
P/N 1STVOAG003 01 0,682 17
D-06 0 GYRO HORIZON STA
P/N 1STVOAG007 01 2,7434 17
D-07 0 DIRECTIONAL GYRO STA
P/N 1STVOAG004 01 2,893 17
D-08 0 VACUUM-SUCTION-METER UMA
P/N 10-01100 01 0,22 17
D-09 0 VACUUM PRESSURE
GAUGE UMA
P/N 10-25145 01 0,33 17
D-10 X HOUR METER STA
P/N 1STMOAG001 01 0,352 17
D-11 X OIL PRESSURE GAUGE STA
P/N 1STMOAG007 01 1,54 17
D-12 X OIL TEMP. GAUGE STA
P/N 1STMOAG012 01 1,65 17
D-13 X VOLTMETER STA
P/N 1STMOAG013 01 0,308 17
D-14 0 FUEL PRESSURE GAUGE STA
P/N 1STMOAG006 01 0,33 17
D-15 X CHT HEAD AND CYLINDER
TEMP. GAUGE STA
P/N 1STMOAG012 02 0,33 17
D-16 X FUEL LEVEL INDICATOR STA
P/N 1STMOAG004 02 0,264 17

MAINTENANCE MANUAL
STORM Century S-LSA
STORM Century S-LSA STORMAIRCRAFT
E. COCKPIT
ITEM
NR.
X=INST
Or 0=
NOT
INST
DESCRIPTION BUILDER
and P/N Q.TY WEIGHT
lbs ARM
inches
E-01 X SEAT BELTS STA
P/N 1CNNYAA003 02 4,28 46,5
E-02 X SEAT UPHOLSTERY STA
P/N UPY020-001 02 8,58 45,3
E-03 X CANOPY STA
P/N SL104010-01/00 01 11 39,3
E-04 X REAR WINDOWS STA
P/N SL101000-42/00 02 1,32 74,8
E-05 X FLIGHT INSTRUMENTS
PANELS STA
P/N SL105200-01 02 2,42 17,3
E-06 X ENGINE INSTRUMENTS
PANELS STA
P/N SL105300-01 02 2,42 17,3
E-07 X FUEL VALVE ON-OFF
SELECTOR STA
P/N 1VVSFFF001 01 0,484 24,4
E-08 X CARPETS & CTRL STICK
COVER STA
P/N UPY020-… 02 4,07 25,6
E-09 X DOORS LOCKING SYSTEM STA
P/N DLS-001 01 0,22 30,3
E-10 X IGNITION SWITCH STA
P/N 1ELINAC001 1 0,44 17,3
E-11 X BREAKERS STA
P/N 1ELALBK… 10 0,066 17,3
E-12 X SWITCHES STA
P/N 1ELINLE001 07 0,044 17,3
E-13 X ELEV./RUDDER TRIM
INDICATOR RAY ALLEN
P/N RP3 LED 02 0,170 17,3
E-14 X ELEV./RUDDER TRIM
SWITCH RAY ALLEN
P/N RS2 02 0,170 17,3
E-15 X LIMIT TAGS STA
P/N TGS-002 // negligible ______
E-16 X VARIOUS TAGS STA
P/N TGS-001 // negligible ______

MAINTENANCE MANUAL
STORM Century S-LSA
STORM Century S-LSA STORMAIRCRAFT
F. AVIONICS
ITEM
NR.
X=INST
Or 0=
NOT
INST
DESCRIPTION BUILDER
and P/N Q.TY WEIGHT
lbs ARM
inches
F-01 X VHF COM & COM ICOM
IC-A200 01 2,794 17
F-02 X TRANSPONDER GARMIN
GTX320A 01 3,102 17
F-03 0 MICROPHONE TELEX 8421
P/N 66 T D.206 01 0,616 17
F-04 X "COM" ANTENNA COMANT
P/N C-121 01 0,5456 98,5
F-05 X TRANSPONDER ANTENNA COMANT
P/N CI-105 01 0,0616 67
F-06 0 GLOBAL POSITIONING
SYSTEM GARMIN GPS
P/N 165-TSO 01 1,5114 17
F-07 0 VOR-DME APPARATUS NARCO DME
P/N 11-14000 01 3,8918 17
F-08 0 VOR INDICATOR NARCO IDME
P/N 11-14200 01 2,5938 17
F-09 0 ADF UNIT NARCO ADF 841
P/N 11-13900 01 2,695 17

MAINTENANCE MANUAL
STORM Century S-LSA
STORM Century S-LSA STORMAIRCRAFT
1.2 SOURCES TO PURCHASE PARTS
STORMAIRCRAFT
Via Enzo Ferrari
04016 Sabaudia LT
Italy
Tel [phone]
Fax [phone]
www.stormaircraft.com
[email protected]
BOMBARDIER-ROTAX
See your local Rotax dealer
www.rotax.bombardier.com
WOODCOMP (US dealer)
Grand Aero LLC
Fresno, CA
Tel. [phone]
www.grandaero.com
MATCO Mfg
550 West 3615 South
Salt Lake City, UT 84115
www.matcomfg.com
AIRCRAFTSPRUCE WEST
225 Airport Circle
Corona, CA 92880
Tel. [phone]
800-861-3192
[email protected]
www.aircraftspruce.com
AIRCRAFTSPRUCE EAST
452 Dividend Drive
Peachtree City, GA 30269
Tel. [phone]
800-861-3192
[email protected]
www.aircraftspruce.com
GARMIN
Visit Garmin dealer section on www.garmin.com to find authorized dealer or shop closer to you
ICOM
Visit Icom America dealer section on www.icomamerica.com for authorized dealer or shop closer to you
BENDIX KING
Visit Bendix King dealer section on www3bendixking.com for authorized dealer or shop closer to you

MAINTENANCE MANUAL
STORM Century S-LSA
STORM Century S-LSA STORMAIRCRAFT
1.3 LIST OF DISPOSABLE REPLACEMENT PARTS
DESCRIPTION P/N 100 500
ANNUAL SPECIAL
AIR FILTER STA
825 711 4
FUEL FILTER
GASCOLATOR STA ACMOFB001
44
5” MAIN WHEEL TUBE MATCO
P/N TIRTU500X5
4
4” NOSE WHEEL TUBE STA
TUB4.00X4
4
5” MAIN WHEEL MATCO
WHLW51S1.25
4
NOSE WHEEL
TIRE MATCO
TIRT4X4.00-6
4

MAINTENANCE MANUAL
STORM Century S-LSA
STORM Century S-LSA STORMAIRCRAFT
1.4 ENGINE SPECIFICATIONS

MAINTENANCE MANUAL
STORM Century S-LSA
STORM Century S-LSA STORMAIRCRAFT
Rotax 912 S UL Aircraft Engine
(Non Certified Version)
Continuous Performance: 69.6 KW (95 HP) @ 5500 RPM
Take - off Performance: 73.6 KW (100 HP) @ 5800 RPM (Max. 5 min.)
Fuel consumption at 75% continuous power: 4.9 gph
Engine TBO (Time Between Overhaul): 1,500 hours
4-stroke, 4 cylinder horizontally opposed, dual spark ignition engine, one central camshaft,
pushrods, OHV:
• Liquid cooled cylinder heads, ram air-cooled cylinders
• Dry sump forced lubrication
• Electric starter and starter relay
• Dual breakerless, capacitor discharge ignition
• Rectifier/regulator
• Prop drive via reduction gear with integrated shock absorber.
• Integrated AC generator
• Mechanical (engine driven) fuel pump
• R.F.I. suppression
• 2 carburetors
* Full 73.6 KW (100 HP) available only when installed with Rotax tuned intake and exhaust
systems designed for the 912 S UL. Use of other intake and / or exhaust systems may result in
reduced take-off power. Potential users of the 912 S UL should consult the 912 S Maintenance
Manual attacched to this manual for more detailed information.

MAINTENANCE MANUAL
STORM Century S-LSA
STORM Century S-LSA STORMAIRCRAFT
1.5 WEIGHT AND BALANCE INFORMATION
A – WEIGHING PROCEDURE
Following procedures are suggested for weighing operations
01 Before weighing, remove dirt, grease, humidity etc. from the aircraft.
02 The aircraft weighing shall be performed in a closed shed to avoid incorrect readings of
the scale due to wind.
03 To determine the center of gravity, the aircraft shall be set on attitude of horizontal flight.
04 All the equipment items included in the certified tare weight shall be installed IN THEIR
POSITION when performing the weighing.- These equipment items are part of the
weighing report.-
05 The scales must be properly calibrated, zeroed and used as per builder’s instructions. The
scales and the suitable supports for the aircraft, when needed, are normally positioned
under the aircraft wheels. Other structural points that can suitably support the aircraft may
be used, as for example the jack plates on the main spar. These points must be clearly
pointed out in the weighing report.
06 If not otherwise required by the aircraft specifications, the fuel system must be drained
until the indicator shows “ZERO” or “EMPTY” when the aircraft is on attitude of horizontal
flight. The fuel quantity remaining in the tank, in the pipes and in the engine is called
“RESIDUAL FUEL” and must be included in the tare weight.- In particular cases the
weighing can be performed with full load of fuel, provided that an accurate instrument is
available to determine the exact weight.-
07 If not otherwise specified in the aircraft specifications, the oil system shall be completely
drained with all the drain cocks open. In these conditions, the oil quantity remaining in the
tank, in the pipes and in the engine is called “RESIDUAL OIL” and must be included in the
tare weight. When weighing is performed with a full load of oil, the actual tare weight is
equal to the real registered weight minus the weight of the oil contained in the tank (oil
weight = oil capacity in gallons multiplied by 7,5 lbs). It must be specified in all weighing
reports whether full load of oil is included in the weights or if weights are considered after
oil drainage.
08 The brakes must not be operated when reading the scale.
09 After removing the aircraft from the scale, take note of the tare weight.

MAINTENANCE MANUAL
STORM Century S-LSA
STORM Century S-LSA STORMAIRCRAFT
B - WEIGHING AND BALANCING CALCULATIONS
01 UNITARY WEIGHTS FOR WEIGHING AND BALANCING PURPOSES
Fuel : 6 lbs per Gal/USA = a 0,720 gr per liter
Turbine fuel : 6,7 lbs per Gal/USA = a 0,803 gr per liter
Lubricating oil : 7,5 lbs per Gal/USA = a 0,900 gr per liter
Crew and passengers : 180 lbs per person = a 81 kgs per person
02 Take the reference plane of the longitudinal distances from the C.N.. If not shown,
choose a suitable one provided that once it has been determined, it will be the only
reference for the calculation of arms and moments.
03 ALGEBRAIC SIGNS
Great care must be taken over assigning the right algebraic signs ( + o - ) during the
whole balancing calculation. For uniformity purposes, when doing these calculations, you
should always consider to observe the aircraft with its nose on the left side. In this
position, any left side arm (forward) of the reference has a minus (-) sign, and any right
side arm (rear) of the reference has a plus (+) sign. Any weight added to the aircraft on
any side of the reference HAS A PLUS (+) SIGN; any removed weight HAS A MINUS (-)
SIGN.-
When weights are multiplied by arms, the result will have a (+) sign if signs are the same,
and a (-) sign if signs are different.
Following combinations are possible:
Weights added in front of the reference plane: (+) weight x (-) arm = (-) moment
Weights added at the back of the reference plane: (+) weight x (+) arm = (+) moment
Weights removed in front of the reference plane: (-) weight x (-) arm = (+) moment
Weights removed at the back of the reference plane: (-) weight x (+) arm = (-) moment
The total weight of the aircraft is equal to the tare weight of the aircraft plus the added
weights minus the removed weights.
The total moment of the aircraft is determined by the algebraic sum of the aircraft
moment with tare weight and all the single moments of the added and/or removed items.

MAINTENANCE MANUAL
STORM Century S-LSA
STORM Century S-LSA STORMAIRCRAFT
04 WEIGHING AND BALANCING CALCULATION FORMULAS
a Nose wheel aircraft :
Reference plane in front of the main wheels : C. G. = D - ( F x L/W )
Reference plane at the back of the main wheels : C. G. = - ( D + F x L/W )
b Nose wheel aircraft :
Reference plane in front of the main wheels: C. G. = D+R (R x L/W)
Reference plane at the back of the main wheels: C. G. = D+R (R x L/W)
c Formulas used on AV-16 model, to be filled in, valid for nose wheel as well as for nose
wheel aircrafts. X= M/G --- % C.M.A. = X - Y/L
d WHERE : for the formulas referred to in point B-04/a and B-04/b
C.G. = distance from the reference plane to center of gravity of a/c
W = aircraft weight when weighing.
D = horizontal distance taken from reference plane to weighing point of main
wheels
L = horizontal distance taken from weighing point of main wheels to nose or tail
weighing point
R = weight on tail weighing point
e WHERE : for formulas used in point B-04/c
A = total weight when weighing
B = weights to be added if not on board when weighing.
C = weights to be deducted if on board when weighing.
G = tare weight resulting from A+B-C.
E = tare weight moment taken when weighing. (A)
F = weight moment to be added if not on board when weighing. (B)
H = weight moment to be deducted if on board when weighing.(C)
M = tare weight moment resulting from: E+F-C.
X = distance from reference plane of the gravity center of the tare weight of the
aircraft
L = length of mean aerodynamic chord
Y = distance of front end of the mean aerodynamic chord from reference plane.
% C.M.A. = tare weight gravity center position expressed in percentage of the mean
aerodynamic chord
NOTE : MAKE SURE THAT MEASUREMENT UNITS ARE EVEN
CLOSING THE OPERATIONS
Register the obtained results in the Weighing Report and Analysis.
Update all aircraft documentation (C.N. – Flight Manual - logbooks).

MAINTENANCE MANUAL
STORM Century S-LSA
STORM Century S-LSA STORMAIRCRAFT
WEIGHING ANALYSIS
Support LEFT RIGHT NOSE
n° reading Reading Tare Net Reading Tare Net Reading Tare Net
1
2
3
4
5
Totals
MEAN
VALUES
(to be
registered
in the first
page)
WEIGHTS TO BE ADDED
(if not on board when weighing)
WEIGHTS TO BE DEDUCTED
(if on board when weighing)
Name Weight
Lbs Arm Inch Moment Lbs. Inch Name Weight Lbs Arm Inch Moment Lbs. Inch
Total Total

MAINTENANCE MANUAL
STORM Century S-LSA
STORM Century S-LSA STORMAIRCRAFT
1.6 TIRE INFLATION PRESSURES
Nose gear tire inflation pressure: 26 psi
Main landing gear inflation pressure: 26 psi
Check tires at each refuelling to make sure there are no cuts, foreign matters, irregular wear; an
irregular wear could be due to a bad use of brakes as well as to a wrong wheel alignment.
Replace worn tires.
An excessively worn tire considerably increases the possibility and the danger of burst.
NOTE : tires shall be disposed of in compliance with current environmental provisions.
1.7 APPROVED OILS AND CAPACITY
- Type : for car use, classification API "SF" or "SG"
- Quantity : 0,7 gal max. level – 0,5 gal. minimum level, with filter total capacity 0,8 gal
- Grade over 15° C SAE 30 or SAE 40
from 0° C to 32° C SAE 40
from -18° C to 21° C SAE 40 or SAE 30
below -12° C SAE 20W/20
or use multigrade oil
from -05° C to 40° C SAE 20 W-50 SAE 20W-40
from -15° C to 40° C SAE 15 W-50 SAE 15W-40
from -25° C to 40° C SAE 10 W-40
from -25° C to 30° C SAE 10 W-30
from -30° C to 20° C SAE 5 W-20
from -30° C to 40° C SAE 5 W-50
CAUTION : check oil level at each refuelling. This check shall be done when the aircraft is as
levelled as possible. An oil level between MIN and MAX on the dipstick shall be considered
acceptable. Should the oil level drop below MIN, you shall immediately top it up with an oil
meeting ROTAX specifications.
The range between MIN and MAX signs is equal to approx. 0,13 gal oil.
Never top up oil above MAX level (maximum)
NOTE :A repeated and prolonged contact of your skin with used oil can cause dermatitis and is
carcinogenic. Avoid contact and, should it occur, wash up carefully. Keep used oil far from
children’s reach. Dispose used oil in special dumps. Empty cans shall not be thrown in domestic
use dumpsters, but disposed of in special containers.

MAINTENANCE MANUAL
STORM Century S-LSA
STORM Century S-LSA STORMAIRCRAFT
1.8 RECOMMENDED FASTENER TORQUE VALUES
Diameter
M3 (3mm)
M4
M5
M6
M8
M10
M12
M16
M18
M20
Pitch (mm)
0.5
0.7
0.8
1
1.25
1.5
1.75
2
2.5
2.5
4.8
0.54
0.66
1.24
1.52
2.44
2.99
4.22
5.16
10.15
12.47
20.4
25.15
34.73
42.83
84.43
104.93
116.88
144.43
164.9
204.95
5.8
0.68
0.83
1.56
1.9
3.05
3.75
5.27
6.46
12.68
15.58
25.51
31.44
43.41
53.54
105.54
131.17
146.1
180.53
206.14
256.2
8.8
1.09
1.34
2.49
3.04
4.99
6.00
8.44
1043
20.3
24.94
40.81
50.31
69.45
85.66
168.8
209.8
233.7
288.8
329.8
409.9
10.9
1.53
1.88
3.5
4.28
6.87
8.43
11.86
14.53
28.54
35
57.4
70.75
97.68
120.46
237.4
295.13
328.7
406.2
463.8
576.43
12.9
1.84
2.25
4.21
5.14
8.25
10.12
14.24
17.43
34.25
42
68.88
84.9
117.21
144.5
284.9
354.1
394.5
487.4
556.56
691.7
Profile ISO TORQUE Nm