BRM Aero Bristell B23-915 Configuration guide

Issue: 09.12.2021 Chapter 00 Page 1
00
Airplane Maintenance Manual Supplement
Bristell B23-915 model
Doc. N°
ADxC-73-003-AMM Supplement Edition 1.0
Supplementing ADxC-73-001-AMM
The technical content of this document is approved under the authority of the DOA ref. EASA.21J.411

Airplane Maintenance Manual Bristell B23-915
Chapter 00 supplement
Chapter 00 Page 2 Issue: 09.12.2021
Intentionally left blank

Bristell B23-915 Airplane Maintenance Manual
supplement Chapter 00
Issue: 09.12.2021 Chapter 00 Page 3
Amendments
Issue
Date
Revised pages
Description
Edition 1.0
09.12.2021
-
first issue (DC-003)

Airplane Maintenance Manual Bristell B23-915
Chapter 00 supplement
Chapter 00 Page 4 Issue: 09.12.2021
List of Service Bulletins
SB No
Date
Title
Affected
Serial no.’s
AD (EASA)
ADxC-73-SB-011
09.12.2021
Retrofit of air tow hook to
B23-915
All SN
B23-915
-

Bristell B23-915 Airplane Maintenance Manual
supplement Chapter 00
Issue: 09.12.2021 Chapter 00 Page 5
List of Effective Pages
Section
Pages
Appr.
Rev.
Date
Section
Pages
Appr.
Rev.
Date
00
1-6
1.0
09.12.20211
28
1-10
1.0
09.12.2021
01
1-4
1.0
09.12.2021
51
1-2
1.0
09.12.2021
03
1-2
1.0
09.12.2021
61
1-4
1.0
09.12.2021
04
1-4
x
1.0
09.12.2021
71
1-4
1.0
09.12.2021
05
1-10
1.0
09.12.2021
72
1-16
1.0
09.12.2021
08
1-2
1.0
09.12.2021
73
1-4
1.0
09.12.2021
11
1-2
1.0
09.12.2021
74
1-2
1.0
09.12.2021
12
1-2
1.0
09.12.2021
77
1-2
1.0
09.12.2021
20
1-2
1.0
09.12.2021
78
1-4
1.0
09.12.2021
21
1-2
1.0
09.12.2021
79
1-4
1.0
09.12.2021
24
1-6
1.0
09.12.2021
80
1-2
1.0
09.12.2021
91
1-2
1.0
09.12.2021
1
Reissued with every revision.

Airplane Maintenance Manual Bristell B23-915
Chapter 00 supplement
Chapter 00 Page 6 Issue: 09.12.2021
Table of Contents
Chapter Title
01 Introduction
03 Description
04 Airworthiness Limitations
05 Inspection and Maintenance
08 Leveling and Weighing
11 Placards and Markings
12 Servicing
20 Standard Practices - Airframe
21 Air Conditioning
24 Electrical Power
28 Fuel
61 Propeller
71 Power Plant
72 Engine
73 Engine Control and Fuel Indicating-
74 Ignition
77 Engine Indicating
78 Exhaust
79 Oil
80 Starting
91 Charts

Bristell B23-915 Airplane Maintenance Manual
supplement Chapter 01
Issue: 09.12.2021 Chapter 01 Page 1
01 Introduction
Table of Contents
Chapter Title Page
01-00 General .......................................................................................... 1
01-20 Related Publications........................................................................ 2
01-30 Address.......................................................................................... 3
01-00 General
BRM Aero, s.r.o., the manufacturer of BRISTELL B23 airplanes, provides
in accordance with the CS23 Amdt. 5 (AMC3 - CS-VLA) airworthiness
requirements, information necessary to maintain airworthiness of
BRISTELL B23-915 model airplanes.
This Maintenance Manual contains technical description of the design
change DC-73-003, information on operation, maintenance, and
repairs, description of systems and their functions related to the stated
design change.

Airplane Maintenance Manual Bristell B23-915
Chapter 01 supplement
Chapter 01 Page 2 Issue: 09.12.2021
01-20 Related Publications
Information is also contained in the following documents issued by
the airplane manufacturer and by manufacturers of equipment
installed in individual airplane:
2
BRM AERO
BRISTELL B23 Aircraft Maintenance Manual (referred to as main manual)
BRISTELL B23 Aircraft Flight Manual
BRISTELL B23-915 Aircraft Flight Manual supplement
ROTAX
•Operator's Manual for ROTAX 915 series engine
OM-915 i A
•Maintenance Manual (line) for ROTAX 915 series engine
MML-915 i A
•Maintenance Manual (heavy) for ROTAX 915 series engine
MMH-915 i A
•Service Instruction for ROTAX 915 series engine: SI-915 i-001
(Selection of suitable operating fluids for ROTAX Engine Type 912 i,
915 i, 912 and 914 (Series))
TOST
•Air tow hook: Operating Manual Tow Release E85
K&N
•Air Filter: http://kandn.com/instructions/17152_inst.pdf
http://kandn.com/instructions/18627C_inst.pdf
2
Always refer to the latest issue of the corresponding manual/instruction

Bristell B23-915 Airplane Maintenance Manual
supplement Chapter 01
Issue: 09.12.2021 Chapter 01 Page 3
01-30 Address
BRM AERO, s.r.o.
Address:
Letecká 255
686 04 Kunovice
Czech Republic
Phone:
+ 420 773 984 338
E-mail 1:
[e-mail]
E-mail 2:
[e-mail]
Web:
http://www.brmaero.com
or for occurrence reporting
Aircraft Design
Certification
GmbH (DOA)
Address:
Reichensteinstr. 48
69151 Neckargemünd
Germany
Phone:
[phone]
E-mail:
[email protected]
Web:
http://www.aircraftdc.de

Airplane Maintenance Manual Bristell B23-915
Chapter 01 supplement
Chapter 01 Page 4 Issue: 09.12.2021
Intentionally left blank

Bristell B23-915 Airplane Maintenance Manual
supplement Chapter 03
Issue: 09.12.2021 Chapter 03 Page 1
03 Description
Table of Contents
Chapter Title Page
03-10 Change Description......................................................................... 1
03-10 Change Description
The goal of the design change DC-73-003 for the Bristell B23 is to
implement the more powerful Rotax 915 engine into the B23 airframe.
Major modifications to the Bristell B23 type design are following:
-New powerplant installation:
oNew ECU controlled 141hp engine 915iSc3A featuring:
▪Turbocharger
▪Injection
▪Intercooler
▪2nd water cooler
oNew engine mount to fit the suspensions frame from Rotax
-New upper & lower cowling:
oNew/repositioned openings for air inlet, cooling, exhaust, …
oUpper cowling featuring two access hatches for oil and
coolant level control
-New inspection access hatch on the fuselage belly skin for the main
and auxiliary fuel pumps
-New instrument panel layout for Rotax 915 control switches
-Fuel selector “dual valve” type and with remote location
-Additional fuel return line into the RHS tank, to account for the
higher return fuel volume
-Optional glider towing system

Airplane Maintenance Manual Bristell B23-915
Chapter 03 supplement
Chapter 03 Page 2 Issue: 09.12.2021
Intentionally left blank

Bristell B23-915 Airplane Maintenance Manual
supplement Chapter 04
Issue: 09.12.2021 Chapter 04 Page 1
04 Airworthiness Limitations
The Airworthiness limitations Section is approved, and variations must
also be approved.
Table of Contents
Chapter Title ........................................................................................... Page
04-10 Life Limited Components................................................................. 2
04-10-01 Class I Parts Limitations .................................................................... 2

Airplane Maintenance Manual Bristell B23-915
Chapter 04 supplement
Chapter 04 Page 2 Issue: 09.12.2021
04-10 Life Limited Components
04-10-01 Class I Parts Limitations
The following parts must be replaced or inspected as described below
at the intervals specified in Table 1.
Inspection for welded steel components must include dye-penetrant or
similar method.
Title
Drawing N°
Defined Interval
Engine Mount
Tubes
71B510000N
Inspect every 5,000 hours
Replace at 18,000 hours
Bolts (to airframe)*
AN5-26A
AN5-32A
Replace at 1,000 hours*
Bolts (suspension frame
to engine mount)
AN7-42A
Replace at 1,000 hours
Table 1 Class I Parts
* Visual inspection for ovalisation of bracket holes on fuselage side.
04-10-03 Air Tow Hook Limitations (if installed; optional equipment)
Air tow hook (TOST E85) time between overhaul is 10000 actuations.
This corresponds to a maximum of 2000 take-offs.
3
For general overhaul and servicing procedures refer to the operating
manual referred to in section 01-20Related Publications .
3
A general overhaul interval of 4 years is recommended by the tow hook manufacturer

Bristell B23-915 Airplane Maintenance Manual
supplement Chapter 04
Issue: 09.12.2021 Chapter 04 Page 3
Mandatory Inspection procedure for Class I limited parts as per Table 1
Aircraft S/N.: ………………… Total flight hours: …………
Registration mark: ………………… No. of takeoffs: …………
Prescribed works
Made by
Checked by
Engine Mount
Tubes 71B510000N
- Remove engine cowlings.
- Remove the engine with suspension frame and the engine
mount.
- Inspect the engine mount for deformation/damage.
- Remove any paint according ASTM E1417.
- Perform dye-penetrant testing according ASTM E1417.
- Replace if damaged.
- Paint with the materials defined in the main manual if
undamaged and reinstall.
-
Notes:
Date: ......................... Signature:.........................

Airplane Maintenance Manual Bristell B23-915
Chapter 04 supplement
Chapter 04 Page 4 Issue: 09.12.2021
Intentionally left blank

Bristell B23-915 Airplane Maintenance Manual
supplement Chapter 05
Issue: 09.12.2021 Chapter 05 Page 1
05 Inspection and Maintenance
Table of Contents
Chapter Title Page
05-00 Standard Practice ............................................................................ 2
05-10 Time Limits .................................................................................... 3
05-10-01 Overhaul Schedule............................................................................. 3
05-10-02 Replacement Schedule....................................................................... 3
05-20 Scheduled Maintenance................................................................... 4
05-20-01 Lubrication Plan ................................................................................ 4
05-20-02 Inspection after the first 25 Flight Hours ........................................... 5
05-20-03 Periodical Inspection after 50 Flight Hours ........................................ 6
05-20-04 Annual Periodical Inspection or Inspection after 100 Flight Hours...... 7

Airplane Maintenance Manual Bristell B23-915
Chapter 05 supplement
Chapter 05 Page 2 Issue: 09.12.2021
05-00 Standard Practice
For removing/installing the upper cowling:
▶Open all camlock quick connector
▶Pull up and forward to pass the form-fit of the
intercooler air inlet
▶The air duct on intercooler is not attached to the engine
or airframe and can be removed without tools
▶When reinstalling, make sure the form-fit is applied
correctly
For removing the lower cowling:
▶Disconnect all hoses and connections attached to the
lower cowling (including sensor connectors to the inlet
airbox and the alternate air Bowden cable)
▶After reinstallation verify the correct function of the
alternate air Bowden cable/flap.

Bristell B23-915 Airplane Maintenance Manual
supplement Chapter 05
Issue: 09.12.2021 Chapter 05 Page 3
05-10 Time Limits
For Information about life limitation of installed avionics/equipment
not listed herein refer to Chapter 01-20 Related Publications .
05-10-01 Overhaul Schedule
Items shown here must be overhauled at the times indicated.
Item
Overhaul
Motor
ROTAX 915 iSc3A
Refer to Maintenance Manual (Line)
915 Series, latest edition
All other items
On condition or as stated in the
respective maintenance/overhaul
manual
05-10-02 Replacement Schedule
Items shown here must be replaced at the times indicated.
Item
Replacement
Fuel fine filter
every 100h
Fuel coarse filter
on condition
All other items
On condition or as stated in the
respective maintenance/overhaul
manual

Airplane Maintenance Manual Bristell B23-915
Chapter 05 supplement
Chapter 05 Page 4 Issue: 09.12.2021
05-20 Scheduled Maintenance
05-20-01 Lubrication Plan
Unit
Area of lubrication
Every 100
hours
Lubricant
Engine
Throttle control cable on the inlet into
terminal (in the engine compartment).
X
Engine oil
If towing system installed:
Unit
Area of lubrication
Every 100
hours
Lubricant
Tow hook
Bowden cable and release mechanism
X
Engine oil