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Airplane Description
DA 42 AFM
Page 7 - 34
Rev. 8
15-Dec-2017
Doc. No. 7.01.05-E
START
Turning START key switch to the left starts the LH engine. Turning it to the right side starts
the RH engine.
ECU SWAP
There are two ECU SWAP switches, one for each engine. For normal operation both
switches are set to AUTOMATIC. Each engine is controlled by its ECU A. In case of a
failure of the active engine control unit (ECU) there should be an automatic switch-over
to the appropriate ECU B. If the automatic switch over fails, switch over can be done
manually by switching to ECU B. This procedure should only be applied in an emergency.
ECU TEST
There are two ECU TEST buttons, one for each engine. Depending on the position of
the power lever and the engine speed, the ECU TEST button has two different functions.
Power lever at IDLE and RPM below approximately 900:
By pushing and holding the button until the end of the procedure, the self-test of each
engine control unit is started. The procedure is possible on the ground as well as during
flight, but only if the power lever is in the IDLE position. Otherwise the test will not start.
During the procedure the ECU performs a switch from ECU A to ECU B with the
propeller cycling. The propeller RPM is monitored automatically by the ECU. When
switching from one ECU to the other, a slight shake of the engine may occur. Finally
the ECU switches back from ECU B to ECU A. After that both caution lights must
extinguish and the engine must run without a change.
Power lever above IDLE, or RPM above approximately 900:
If an ECU A or ECU B caution message is displayed, the ECU TEST button can be
pressed for more than 2 seconds to reset the message. The reset is possible only once,
and only in case of system faults of minor criticality.
Содержание DA 42
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Страница 277: ...DA 42 AFM Mass and Balance Doc No 7 01 05 E Rev 8 15 Dec 2017 Page 6 9 6 4 2 LOADING DIAGRAM ...
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Страница 313: ...DA 42 AFM Airplane Description Doc No 7 01 05 E Rev 8 15 Dec 2017 Page 7 11 7 4 INSTRUMENT PANEL ...
Страница 340: ...Airplane Description DA 42 AFM Page 7 38 Rev 8 15 Dec 2017 Doc No 7 01 05 E 7 9 5 FUEL SYSTEM General ...
Страница 355: ...DA 42 AFM Airplane Description Doc No 7 01 05 E Rev 8 15 Dec 2017 Page 7 53 7 10 ELECTRICAL SYSTEM ...
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Страница 390: ...Handling Care Maintenance DA 42 AFM Page 8 12 Rev 8 15 Dec 2017 Doc No 7 01 05 E ...