Rotax 912 i series - Engine Not Responding to Power Inputs; Exceeding Max. Admissible Engine Speed; Failure of the EMS Power Supply; Occurence of Uncharacteristic and Server Engine Vibra- Tions

Effectivity: 912 i Series BRP-Powertrain page 4-3
OM Edition 1/Rev. 0 January 01/2012
d05873.fm
4.2) Engine not responding to power inputs
Engine not re-
sponding
- Possible breakage of throttle valve actuation/linkage.
- Limited flight operation with available power possible.
- A maintenance inspection should be carried out.
4.3) Occurence of uncharacteristic and severe engine vibrations
Engine vibrations - If the vibrations occur in conjunction with a loss of power then
the engine may only be firing on 3 cylinders.
- Limited flight operation.
- A maintenance inspection should be carried out.
4.4) Re-Start during flight
Engine stop - Starting procedure same as on ground, however, on a warm
engine.
4.5) Failure of the EMS power supply
Failure of the EMS - If the EMS power supplies (alternator A) fails then the ECU au-
tomatically switches one-time over to the second EMS power
supply (alternator B).
- While alternator B runs, no power drop is recognizable.
- Failure of both EMS power supplies (alternator A/B) result in
engine stoppage.
Remedy: Switch “ON“ the backup battery switch. In this case
the power supply is provided by the aircraft battery.
- Land the aircraft at the next available opportunity.
- A maintenance inspection should be carried out.
,
4.6) Exceeding max. admissible engine speed
Exceeding engine
speed
- Reduce the engine speed. Any exceeding of the max. admis-
sible engine speed has to be entered by the pilot into logbook,
stating duration and extent of over engine speed.
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WARNUNG
NOTICE
No charging of battery!