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P2008 TC
Flight Manual
60
5.6 Failures indicated on the annunciator panel
5.6.1 ALTERNATOR LIGHT
Alternator (ALT) light may illuminate for a faulty alternator. If the Alternator light illuminates proceed as follows:
LAND as soon as possible
Continue flight on battery power alone; the battery is capable of supplying the electrical system for about 20
minutes with normal flight electric loads including operation of flap and trim.
5.6.2 TCU BOOST LIGHT
If the red TCU boost lamp illuminates one of the following conditions have happened to the engine:
Maximum admissible boost pressure exceeded (red lamp will continuously illuminated);
Proceed as follows:
1.
Reduce Throttle until RPM and manifold pressure within operating limits
Full throttle operation exceeds 5' (red lamp will blink)
Proceed as follows:
2.
Reduce Throttle until RPM and manifold pressure at least to maximum continuous speed.
NOTE
Record the event in the aircraft logbook with the duration and exact time of exceeding limits
5.6.3 TCU CAUTION LIGHT
5.6.3.1
SUDDEN DROP OF BOOST PRESSURE AND RPM
If Amber caution lamp of TCU is blinking proceed as follows:
If LOUD NOISE or BANG is heard: a fracture of the turbo is likely
Monitor oil pressure
LAND as soon as possible
NOTE
Record the event in the aircraft logbook with the duration and exact time of exceeding limits
5.6.3.2
SUDDEN RISE OF BOOST PRESSURE AND RPM
If Amber caution lamp of TCU is blinking proceed as follows:
Immediately reduce engine speed until boost pressure and rpm are within the limits
Limited flight operations as wastegate may be fully closed and control of boost pressure is only possible via
throttle lever
LAND as soon as pratical
NOTE
Record the event in the aircraft logbook with the duration and exact time of exceeding limits
5.6.3.3
PERIODICAL RISE&DROP OF BOOST PRESSURE AND RPM
If Amber caution lamp of TCU is NOT blinking proceed as follows:
Switch OFF
the servo motor of the engine for a moment (max 5 sec). Then the operation should stabilize
If previous step does not stabilize the operations,
switch OFF
the servo motor completely and keep the engine
within the limits using throttle
Limited flight operations as boost pressure control is no more possible
LAND as soon as pratical
NOTE
Record the event in the aircraft logbook.
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