AE50R, AE50RA
AE50RAB
Engine Manual
Doc. No. E1.01.01-E
Rev. 6 10-March-2011
Page 10-1
10.0 ENGINE EMERGENCY PROCEDURES
10.1 Fan Belt Failure
In the unlikely event of a fan belt failure, the indication will be a sudden rise in Rotor Cooling
Air temperature. The engine load / RPM should be reduced as much as is practical to prevent
further heat build up. If the rotor cooling outlet air temperature reaches 120 °C the engine
should, if possible, be switched off. Continued running of the engine under these conditions
will cause damage.
10.1.2 Charge Circuit Fail Alarm
In the unlikely event of a charging circuit failure, indicated by the appropriate alarm, the
electrical bus bar will be fed automatically from the battery. Any non–essential electrical items
should be switched off. The battery should be capable of providing sufficient power to run the
CDI unit etc. for a minimum of ½ hour. Reducing power will not significantly increase engine–
running time.
10.1.3 Low Oil in the Tank
In the unlikely event of low oil alarm the engine RPM should be reduced as much as is
practical. Flying time should be limited to a total of 10 minutes at this reduced power. Flying
under such conditions may cause damage to the engine.
10.1.4 Low
Fuel
Pressure
If low fuel pressure is indicated, the engine may stop or operate at reduced power and may
also indicated an excessively high exhaust temperature. Throttle setting should be adjusted, if
practical, to minimise excess temperature.
Continued operation at excess exhaust temperature will cause damage to the engine.
10.1.5 Rotor Cooling Air Temperature
If the rotor cooling air temperature rises above the specified limit, the engine should be shut
down as soon as possible. Continued operation at excess temperature is likely to cause
damage to the engine.
10.1.6 Water
Temperature
If the water–cooling temperature rises above the specified limit, the engine should be shut
down as soon as possible. Continued operation at excess temperature is likely to cause
damage to the engine.
Summary of Contents for AE50R
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