Austro Engine IAE50R-AA User Manual (English)

Questions and Answers:

M
munozjoshuaAug 4, 2025
Why Austro Engine cannot develop full power?
- S
  Steven FischerAug 4, 2025
  If the Austro Engine cannot develop full power, several factors could be at play. Start by checking and adjusting the throttle linkage to ensure it opens completely. Inspect or replace the spark plug, HT lead, and plug cap. Look into the exhaust system for increased back pressure and address any issues. Investigate the engine for loss of compression. Replace or clean the induction filter if it's blocked. Lastly, examine the fuel system and replace the fuel filter if low fuel pressure is suspected.
A
aholtAug 11, 2025
What to do if liquid coolant overheats on medium and high power in Austro Engine?
- V
  Vickie RowlandAug 11, 2025
  If the liquid coolant overheats on medium and high power in your Austro Engine, several issues could be the cause. You should rectify a restricted radiator core or constricted radiator hose. Also, consider overhauling the water pump if there's a drive failure. Vent or bleed the system to remove any air. Finally, rectify any coolant leaks that may be present.
J
Jessica MataAug 26, 2025
What to do if Austro Engine misfires on one spark plug?
- J
  James EspinozaAug 26, 2025
  If your Austro Engine is misfiring on one spark plug, the issue could stem from several sources. Start by checking for a dirty plug cap or terminal, and clean or replace it as necessary. Inspect the wiring for faults, such as wiring to earth or an open circuit. Also, check the spark plug itself, and clean or replace if faulty. Finally, examine the HT (high tension) components for faults, checking and replacing the spark plug, HT lead, or plug cap for arcing.
S
Scott ChapmanSep 10, 2025
Why Austro Engine has excessive rotor cooling outlet temperatures?
- J
  jhullSep 12, 2025
  Excessive back pressure in the outlet duct may be the reason. Rectify this before continuing to run the engine. The rotor air inlet filter may be blocked, so clean or replace the filter. A slipping or broken fan belt could be the cause, so adjust or replace it. Fan or impeller failure may also be responsible, so replace the assembly. Bearing failure could be the problem, so replace the assembly. Stuck side seals can also cause this issue; investigate the outlet for black carbon deposits. Also, investigate possible exhaust leakage within the engine bay area.

Austro Engine IAE50R-AA Specifications

General

Brand	Austro Engine
Model	IAE50R-AA
Category	Engine
Language	English

Summary

1 Introduction

1.1 Record of Revisions

Records all revisions made to the manual, including temporary ones for tracking updates.

1.2 List of Revisions

Details previous revisions with reason, chapter, page, and date for historical tracking.

1.3 List of Valid Pages

Lists all valid pages of the manual with revision numbers and dates for reference.

1.4 List of Incorporated Temporary Revisions

Details specific temporary revisions incorporated into the manual for current use.

2 General Information

3 Safety Information

3.1 Safety Symbols

Explains symbols and warning signs used for safety and damage prevention.

3.2 Model Designation Breakdown

Breaks down the engine model designation into its component parts for clarity.

3.3 Replacement parts

Provides recommendations and warnings regarding the use of genuine spare parts.

4 Reserved

5 General Engine Data

5.1 Description

Provides a general overview of the engine's type, configuration, and key features.

5.2 Technical Data

Contains detailed technical specifications and parameters of the engine.

6 Operating Data / Limitations

6.1 Maximum Take – off Rating

Specifies the engine's maximum power output and associated parameters for takeoff.

6.2 Maximum Continuous Rating

Details the engine's maximum continuous power output and operating limits.

6.3 Operating Limitations

Outlines critical operating parameters and limits for safe engine performance.

7 Components

7.1 Description of Components

Describes the main assemblies and parts of the engine, including sealing.

8 Descriptions of Systems

8.1 Fuel System

Explains the engine's fuel system, including components, operation, and specifications.

8.2 Cooling System

Details the liquid and air cooling systems, including components and operation.

9 Operating the Engine

9.1 Starting Procedure and Warm-up

Provides step-by-step instructions for starting and warming up the engine.

9.2 Engine Start down to approximately -10 °C

Specific guidance for starting the engine in cold conditions down to -10 °C.

9.3 Ground Tests

Outlines procedures for conducting ground tests on the engine.

9.4 Power Loss at Altitude

Explains how engine performance degrades with increasing altitude.

9.5 Storage

Provides procedures for storing the engine, both short-term and long-term.

10 Engine Emergency Procedures

10.1 Fan Belt Failure

Describes actions to take in case of a fan belt failure.

10.2 Low Oil in the Tank

Outlines procedures for engine operation with low oil level.

10.3 Low Fuel Pressure

Details actions to take if low fuel pressure is indicated.

10.4 Rotor Cooling Air Temperature

Describes procedures for high rotor cooling air temperature.

10.5 Coolant Temperature

Provides guidance for high coolant temperature situations.

11 Maintenance Notes

11.1 Austro Engine GmbH Available Consumables

Lists recommended consumables and parts available from the manufacturer.

11.2 General Torque Settings

Provides general torque specifications for fasteners and components.

11.2.2 MAP Hoses

Instructions for cleaning and inspecting MAP hoses.

11.2.3 Checking & Setting Fan Belt Tension

Details the procedure for checking and adjusting fan belt tension.

11.2.4 Adjusting Engine Idle Speed

Guidance on adjusting the engine's idle speed.

12 Scheduled Maintenance

12.1 Maintenance Schedule

A table outlining maintenance tasks based on engine hours or time intervals.

12.2 Typical 50 Hours Check

Details the specific checks to be performed at 50-hour intervals.

12.3 Mandatory Life Limitation

Information regarding any mandatory life limits for engine components.

13 Cooling System

13.1 Liquid Cooling System

General information and checks for the liquid cooling system.

13.2 Coolant Leak Check

Procedures for checking the cooling system for leaks.

13.3 Coolant System Filling and Bleeding

Step-by-step guide for filling and bleeding the coolant system.

13.4 Coolant System Pressure Test

Instructions for performing a pressure test on the coolant system.

13.5 Air Cooling System

13.5.1 Fan Belt

Guidance on checking the condition and tension of the fan belt.

13.5.2 Fan Belt Replacement

Detailed procedure for replacing the engine's fan belt.

13.5.3 Air Filters

Instructions for inspecting and maintaining air filters.

13.5.4 Air Filter Cleaning Procedure

Step-by-step guide for cleaning engine air filters.

13.5.5 Rotor Cooling Air Fan Impeller

Procedure for inspecting the rotor cooling air fan impeller.

14 Engine Internal Inspection

14.1 Spark Plug

Details the inspection process for spark plugs and their connections.

15 Ground Run

15.1 Pre-start Checks Outside Aircraft

Checklist for pre-start inspections performed outside the aircraft.

15.2 Pre-start Checks Inside Aircraft

Checklist for pre-start inspections performed inside the aircraft.

15.3 Ground Run

Instructions for conducting the engine ground run.

15.4 Ground Run Check List (Example)

Provides an example checklist for recording ground run results.

16 Maintenance and Overhaul

17 Trouble Shooting

17.1 General

General guidance and precautions for troubleshooting engine issues.

17.2 Rough Idle

Troubleshooting steps for an engine experiencing a rough idle.

17.3 Engine Misfires on One Spark Plug

Diagnosing and resolving engine misfires attributed to a single spark plug.

17.4 Engine Cannot Develop Full Power

Troubleshooting guide for an engine not developing full power.

17.5 Excessive Rotor Cooling Outlet Temperatures

Addressing issues related to high rotor cooling outlet temperatures.

17.6 Liquid Coolant Overheats on Medium and High Power

Troubleshooting steps for liquid coolant overheating under load.

17.7 ECU Error Warning Light Flashes

Interpreting and responding to ECU error warning light flashes.

18 Notes for Installers of Engines

18.1 General Notes

General guidelines for engine installation, emphasizing genuine parts and torque.

18.2 Notes for Engine Installers

Specific installation notes for the cooling, fuel, and oil systems.

19 Electrical System

19.1 Engine Control System

Overview of the ECU, sensors, and actuators for engine control.

19.2 GND Concept IAE50R

Explains the common ground concept required for the engine installation.

19.3 Sensors and Actuators

Details various sensors and actuators used in the engine system.

19.4 Generator Regulator and Generator Wiring

Information on the generator regulator and its electrical wiring.

19.5 Starter

Details on the engine starter, its installation, and electrical connection.

19.6 Electronic Components Capability

Information on electronic components tested to meet environmental requirements.

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Austro Engine IAE50R-AA User Manual

Table of Contents