Rotax 915 i A SERIES User manual

AIRCRAFT ENGINES
ref. no.: OM-915 i A| part no.: 898851
OPERATORS MANUAL
FOR ROTAX® ENGINE TYPE 915 i A SERIES
picture: ROTAX® 915 iS with options

Before starting the engine, read the Operators Manual, as it contains
important safety relevant information. Failure to do so may result in per-
sonal injuries including death. Consult the original eq uipment
manufactur-ers handbook for additional instructions!
WARNING
These technical data and the information embodied therein are the property of
BRP-Rotax GmbH & CO KG, Austria, acc, BGBI 1984 no. 448, and shall not,
without prior written permission of BRP-Rotax GmbH & Co KG, be disclosed in
whole or in part to third parties. This legend shall be included on any reproduction
of these data, in whole or in part. The Manual must remain with the engine/aircraft
in case of sale.
Copyright 2017 © - all rights reserved.
ROTAX® is a trade mark of BRP-Rotax GmbH & Co KG. In the following
document the short form of BRP-Rotax GmbH & Co KG = BRP-Rotax is used.
Other product names in this documentation are used purely for ease of
identification and may be trademarks of the respective company or owner.
Translation into other languages might be performed in the course of language
localization but does not lie within ROTAX® scope of responsibility.
In any case the original text in English language and the metric units are
authoritative.

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Table of Content
Chapter INTRO – Introduction
Chapter LEP – LIST OF EFFECTIVE PAGES
Chapter TOA – Table of amendments
Chapter 1 – General note
Chapter 2 – Operating instructions
Chapter 3 – Standard operation
Chapter 4 – Abnormal operation
Chapter 5 – Performance and Fuel consumption
Chapter 7 – System Description
Chapter 8 – Preservation and storage
Chapter 9 – Supplement
Chapter 10 – Proper disposal

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NOTES

INTRO) Introduction
Topics in this chapter
Foreword BRP-Rotax GmbH & Co KG (hereinafter “BRP-Rotax”) provides
“Instructions of Continued Airworthiness”, which are based on
the design, the tests and certification of the engine and its
components. These instructions apply only to engines and
components supplied by BRP-Rotax.
Before operating the engine, read this Operators Manual
carefully. If any passages of the Manual are not clearly
understood or in case of any questions, please contact our
ROTAX® Authorized Distributors or their independent Service
Centers.
This Operators Manual contains important information about
safe operation of the engine together with descriptions of the
systems, technical data, operating media and the operational
limits of the engine.
The specified information and procedures apply only to the
engine and not to specific applications in particular aircraft. The
aircraft manufacturers Operators Manual is therefore definitive
in terms of the operation of the engine, as it contains all of the
aircraft-specific instructions
BRP-Rotax wishes you much pleasure and satisfaction flying
your aircraft powered by this ROTAX® aircraft engine.
Document
structure
The structure of the Manual follows whenever it is possible the
structure of the „GAMA Specification #1 for Pilot’s Operating
Handbook“.
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NOTES

LEP) LIST OF EFFECTIVE PAGES
Chapter Page Date
cover
page
INTRO 1 Dec. 01 2017
2 Dec. 01 2017
LEP 1 Dec. 01 2017
2 Dec. 01 2017
TOA 1 Dec. 01 2017
2 Dec. 01 2017
1 1 Dec. 01 2017
2 Dec. 01 2017
3 Dec. 01 2017
4 Dec. 01 2017
5 Dec. 01 2017
6 Dec. 01 2017
7 Dec. 01 2017
8 Dec. 01 2017
9 Dec. 01 2017
10 Dec. 01 2017
11 Dec. 01 2017
12 Dec. 01 2017
13 Dec. 01 2017
14 Dec. 01 2017
2 1 Dec. 01 2017
2 Dec. 01 2017
3 Dec. 01 2017
4 Dec. 01 2017
5 Dec. 01 2017
6 Dec. 01 2017
7 Dec. 01 2017
8 Dec. 01 2017
Chapter Page Date
3 1 Dec. 01 2017
2 Dec. 01 2017
3 Dec. 01 2017
4 Dec. 01 2017
5 Dec. 01 2017
6 Dec. 01 2017
7 Dec. 01 2017
8 Dec. 01 2017
9 Dec. 01 2017
10 Dec. 01 2017
11 Dec. 01 2017
12 Dec. 01 2017
13 Dec. 01 2017
14 Dec. 01 2017
15 Dec. 01 2017
16 Dec. 01 2017
17 Dec. 01 2017
18 Dec. 01 2017
19 Dec. 01 2017
20 Dec. 01 2017
4 1 Dec. 01 2017
2 Dec. 01 2017
3 Dec. 01 2017
4 Dec. 01 2017
5 Dec. 01 2017
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7 Dec. 01 2017
8 Dec. 01 2017
5 1 Dec. 01 2017
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Chapter Page Date
3 Dec. 01 2017
4 Dec. 01 2017
7 1 Dec. 01 2017
2 Dec. 01 2017
3 Dec. 01 2017
4 Dec. 01 2017
5 Dec. 01 2017
6 Dec. 01 2017
7 Dec. 01 2017
8 Dec. 01 2017
9 Dec. 01 2017
10 Dec. 01 2017
11 Dec. 01 2017
12 Dec. 01 2017
Chapter Page Date
13 Dec. 01 2017
14 Dec. 01 2017
15 Dec. 01 2017
16 Dec. 01 2017
8 1 Dec. 01 2017
2 Dec. 01 2017
3 Dec. 01 2017
4 Dec. 01 2017
9 1 Dec. 01 2017
2 Dec. 01 2017
10 1 Dec. 01 2017
2 Dec. 01 2017
Index
rear
page
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TOA) Table of amendments
Approval*
The technical content of this document is approved under the authority of
DOA ref. EASA.21J.048.
cur-
rent
no.
chapter page date of
change
remark
for
appro-
val
date of
appro-
val
from
authori-
ties
date of
inclu-
sion
signa-
ture
0 INTRO all Dec. 01 2017 DOA*
0 LEP all Dec. 01 2017 DOA*
0 TOA all Dec. 01 2017 DOA*
0 1 up to
10
all Dec. 01 2017 DOA*
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Summary of amendments
Summary of the relevant amendments in this context, but without any claim to
completeness.
current
no.
chap-
ter
page date of change comments
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1) General note
Topics in this chapter
1.1 General ................................................................................................2
1.2 Abbreviations and terms ........................................................................3
1.3 Safety ..................................................................................................7
1.4 Safety information .................................................................................9
1.5 Technical documentation...................................................................... 12
1.6 Type description.................................................................................. 14
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1.1) General
Purpose The purpose of this Operators Manual is to familiarize the air-
craft manufacturers installing this aircraft engine with operating
instructions and safety information.
In no way this document must be used by end customers (pri-
vate aircraft owners, flight schools...) for operating the engine.
Due to various executions of engine installations, only the air-
craft manufacturer is able to provide end customers with opera-
tion and safety informations tailored for a specific aircraft.
Nevertheless, all provided informations in this Operators Man-
ual (such as operating limits, safety informations, operation in-
structions...) must be adhered to. The aircraft manufacturer is
obliged to forward this information to the end customer in an ap-
propriate way (e.g. within the aircraft specific Operators
Manual).
For detailed information related to aircraft and aircraft/engine in-
stallation, maintenance, safety or flight operation, consult the
documentation provided by the aircraft manufacturer and/or its
dealer.
For additional information on engines, maintenance or parts,
you can also contact your nearest ROTAX® authorized aircraft
engines distributor or their independent Service Center.
Engine serial
number
When making inquiries or ordering parts, always indicate the
engine serial number. Due to continues product improvement,
engines of the same engine type might require different support
and spare parts.
The engine serial number is on top of the crankcase, behind the
propeller gearbox.
Figure 1: Pos. 1: Engine serial number
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1.2) Abbreviations and terms
Abbrevia-
tions
Description
* Reference to another section
�center of gravity
The drop symbol indicates use of sealing agents, ad-
hesives or lubricants (only in the Illustrated Parts
Catalog).
°C Degrees Celsius (Centigrade)
°F Degrees Fahrenheit
rpm Revolutions per minute
A Ampere
AAPTS Ambient Air Pressure Temperature Sensor
AC alternating current
Ah Ampere hour
A/C Aircraft
AR as required
assy. assembly
ASB Alert Service Bulletin
ACG Austro Control GmbH
ACL Anti Collision Light
API American Petrol Institute
ASTM American Society for Testing and Materials
ATA Air Transport Association
AWG American Wire Gauge
CAN Controller Area Network
Coil 1–4 Ignition coils 1–4
CPS 1+2 Crankshaft Position Sensor 1+2
CSA Constant Speed Actuator
CTS Cooling Temperature Sensor
CW clockwise
CCW counter-clockwise

CGSB Canadian General Standards Board
DCDI Dual Capacitor Discharge Ignition
DC direct current
DOA Design Organisation Approval
DOT Department of Transport
EASA European Aviation Safety Agency
IM Installation Manual
ECU Engine Control Unit
EGT Exhaust Gas Temperature
INTRO Introduction
EMS Engine Management System
EN European Norm
ETFE Ethylene Tetrafluoroethylene
FAA Federal Aviation Administration
FAR Federal Aviation Regulations
hr. hours
HIC A Harness Interface Connector A
HIC B Harness Interface Connector B
IFR Instrument Flight Rules
INJ 1–8 Injector 1–8
IPC Illustrated Parts Catalog
ips inch per second
iRMT independent ROTAX Maintenance Training
ISA International Standard Atmosphere
kg Kilograms
KNOCK Knock sensor
MAPS 1+2 Manifold Air Pressure Sensor 1+2
MATS 1+2 Manifold Air Temperature Sensor 1+2
MON Motor Octane Number
MAG Magneto Side
N Newton
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n.a. not available
NDT Non Destructive Testing
Nm Newtonmeter
NVFR Night Visual Flight Rules
OHM Overhaul Manual
OHV Over Head Valve
OM Operators Manual
OPS Oil Pressure Sensor
OTS Oil Temperature Sensor
PCV Pressure Control Valve
POA Production Organisation Approval
PTFE Polytetrafluoroethylene
PTO Power Take Off
Rev. Revision
ROTAX® is a trademark of BRP-Rotax GmbH & Co KG
RON Research Octane Number
RON 424 ROTAX® Norm 424
s.v. still valid (only Illustrated Parts Catalog)
S/N Serial Number
SAE Society of Automotive Engineers
SB Service Bulletin
SI Service Instruction
SI-PAC Service Instruction Parts and Accessories
SL Service Letter
SMD Surface Mounted Devices
TBO Time Between Overhaul
TC Type certificate
part no. Part number
TOA Table Of Amendment
TOC Table of content
TSN Time Since New
TSNP Time Since New Part

TSO Time Since Overhaul
V Volt
VFR Visual Flight Rules
LEP List of Effective Pages
MM Maintenance Manual
XXXX shows the serial component number
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1.3) Safety
Although reading such information does not eliminate any haz-
ards, it promotes the understanding and application the infor-
mation will promote correct use of the engine. Always apply
common workshop safety rules.
The information and descriptions of components and systems
contained in this Manual are correct at the time of publication.
BRP-Rotax maintains a policy of continuous improvement of its
products without imposing upon itself any obligation to retrofit
products previously manufactured.
Revisions BRP-Rotax reserves the right to remove, replace or discontinue
any design, specification, feature or other at any time, and with-
out incurring obligation.
Measurement Specifications are given in the SI metric system with the imperi-
al and US customary measurement system equivalents in
parenthesis.
Symbols used This Manual uses the following symbols to emphasize particular
information. This information is important and must be
observed.
mWARNING
Identifies an instruction which, if not followed, may cause seri-
ous injury or even fatal injury.
mCAUTION
Identifies an instruction which, if not followed, may cause mi-
nor or moderate injury.
ATTENTION
Identifies an instruction which, if not followed, may severely
damage the engine or could void any warranty.
NOTE
Indicates supplementary information which may be needed to
fully complete or understand an instruction.

ENVIRONMENTAL NOTE
Environmental notes give you tips on environmental
protection.
A revision bar outside the page margin indicates a change to
text or graphic.
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1.4) Safety information
Use for intended
purpose
mWARNING
Non-compliance can result in serious injuries or death!
Never fly the aircraft equipped with this engine at locations, air
speeds, altitudes or in other situations which do not allow a success-
ful no-power landing after sudden engine stoppage.
• This engine is not suitable for acrobatics (inverted flight,
etc.). Flight attitudes outside the permissible limits are not
allowed.
• This engine has exclusively been developed and tested for
gyrocopter, pusher and tractor applications. In case of any
other usage, the OEM is responsible for testing and the cor-
rect function of the engine.
• It should be clearly understood that the choice, selection and
use of this particular engine on any aircraft is at the sole dis-
cretion and responsibility of the aircraft manufacturer, assem-
bler and owner/user.
• Due to the varying designs, equipment and types of aircraft,
BRP-Rotax grants no warranty on the suitability of its en-
gine’s use on any particular aircraft. Further, BRP-Rotax
grants no warranty on this engines suitability with any other
part, components or system which may be selected by the
aircraft manufacturer, assembler or user for aircraft
application.
mWARNING
Non-compliance can result in serious injuries or death!
For each use of DAY VFR, NIGHT VFR or IFR in an aircraft the ap-
plicable legal requirements and other existing must be adhered to.
• Certain areas, altitudes and conditions present greater risk
than others. The engine may require humidity or dust/sand
preventative equipment, or additional maintenance may be
required.
• You should be aware that any engine may seize or stall at
any time. This could lead to a crash landing and possible se-
vere injury or death. For this reason, we recommend strict
compliance with the maintenance and operation and any ad-
ditional information which may be given to you by your
dealer.

Training • Whether you are a qualified pilot or a novice, complete knowl-
edge of the aircraft, its controls and operation is mandatory
before a solo flight. Flying any type of aircraft involves a cer-
tain amount of risk. Be informed and prepared for any situa-
tion or hazard associated with flying.
• A recognized training program and continued education for
piloting an aircraft is absolutely necessary for all aircraft pi-
lots. Make sure you also obtain as much information as possi-
ble about your aircraft, its maintenance and operation from
your dealer.
• Engine-specific training courses are provided by the author-
ized distributors according to manufacturer specifications
(iRMT).
Regulations • Respect all legal requirements or local rules pertaining to
flight operation in your flying area. Only fly when and where
conditions, topography, and airspeeds are safest.
• Consult your aircraft dealer or manufacturer and obtain the
necessary information, especially before flying in new areas.
Instrumentation • Select and use proper aircraft instrumentation. This instru-
mentation is not included in the ROTAX® engine package.
Verification to the latest regulations such as FAR or EASA
has to be conducted by the aircraft manufacturer.
Engine log book • Keep an engine log book and respect engine and aircraft
maintenance schedules. Keep the engine in top operating
condition at all times. Do not operate any aircraft which is not
properly maintained or has engine operating irregularities
which have not been corrected.
Maintenance
(iRMT)
• Since special training, tools and equipment are required, en-
gine servicing shall only be performed by an authorized
ROTAX® aircraft engine distributor or their independent serv-
ice center. BRP-Rotax requires that any service or mainte-
nance work be carried out and verified by a technician that
has a current iRMT rating.
• When the engine will not be operated for a longer period pro-
tect the engine and fuel system from contamination and envi-
ronmental exposure.
Engine operation • Never operate the engine without sufficient quantities of oper-
ating fluids (oil, coolant, fuel).
• Never exceed the maximum permitted operational limits.
• In the interest of safety, the aircraft must not be left unat-
tended while the engine is running.
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