Emergency
Procedures
DA 42 AFM
Page 3 - 62 Rev. 8 15-Dec-2017 Doc. No. 7.01.05-E
3.9.3 DEFECTIVE PROPELLER RPM REGULATING SYSTEM
CAUTION
The power lever should be moved slowly, in order to avoid
over-speeding and excessively rapid RPM changes. The light
wooden propeller blades produce more rapid RPM changes
than metal blades.
WARNING
In case of a malfunction of the engine control unit it is possible
that the propeller blades will remain in the position of highest
pitch. In this case the reduced engine performance should
be taken into consideration.
(a) Oscillating RPM
1. POWER setting....................... change
If the problem does not clear:
2. ECU SWAP.......................... ECU B
NOTE
If the problem does not clear itself, switch back to AUTO and
land on the nearest suitable airfield.
CONTINUED
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