Effectivity: 914 Series BRP-Powertrain page 4-5
OM Edition 2 / Rev. 0 April 01/2010
d05037.fm
4.4.3) Orange caution lamp of TCU blinking
Orange caution
lamp of TCU blink-
ing
In case of blinking of the orange caution lamp of TCU, this has to
be recorded by the pilot in the logbook, stating the duration, exact
time and extent of exceeding limits.
4.5) Failure of the voltage supply to the TCU
Failure of voltage
supply
Any exceeding of the max. admissible operating limits must be re-
corded by the pilot in the logbook, stating the duration, exact time
and extent of exceeding.
4.6) Start during flight
Engine stop - Starting procedure same as on ground, however, on a warm
engine without choke.
4.7) Exceeding of max. admissible engine speed
Exceeding of max.
engine speed
- Reduce engine speed. Any exceeding of the max. admissible
engine speed has to be entered by the pilot into the logbook,
stating duration and extent of overspeed.
If the manually controlled variable is not pos-
sible, then turn off the servo motor.
Possible cause Remedy
Indicates a failure of a sensor,
sensor wiring, TCU, or leakage in
the airbox
Reduce speed and boost pressure
manually to be within the operating
limits.
Limited flying operation, as this may
indicate the boost pressure control is
no more or insufficiently possible and
may affect engine performance.
Possible cause Remedy
At a failure of voltage supply the
servo motor will remain in its mo-
mentary position.
Limited flight operation as boost
pressure control is not possible.
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