Abnormal Operating
Procedures
DA 42 AFM
Page 4B - 16 Rev. 8 15-Dec-2017 Doc. No. 7.01.05-E
4B.4.6 L/R ALTN FAIL
L/R ALTN FAIL
Left / Right engine alternator has failed.
(a) One Alternator Failed
1. ALTERNATOR ....................... OFF / affected side
2. Bus voltage .......................... monitor
3. Electrical consumers................... reduce as practicable
END OF CHECKLIST
(b) Both Alternators Failed
WARNING
If both alternators fail at the same time, reduce all electrical
equipment to a minimum. Expect battery power to last
30 minutes and land the airplane as soon as possible. Expect
engine stoppage after this period of time.
1. Avionics Master....................... OFF
2. LH/RH Alternator...................... OFF
3. XPDR .............................. STBY
4. LANDING GEAR...................... down, when down and locked pull
emergency release
5. Stall/Pitot heat ........................ OFF
6. All lights............................. OFF
END OF CHECKLIST
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