ENGINE MANUAL
IAE50R – AA
E1.01.05 – E
Issue date: 25.Jan.2018
Page: 10-1
Revision no: 9
10
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 130 °C the engine
should, if possible, be switched off. Continued running of the engine under these conditions
will cause damage.
10.2
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.
10.3
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.
10.4
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.
10.5
Coolant Temperature
If the coolant 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.
