Service difficulty report · Gcu · Doug MD88

Difficulty date
August 10, 2017
Submitted
August 10, 2017
Operation
Air carrier
Aircraft
N956DL
Make and model
Doug MD88
Aircraft serial
49887
Aircraft time
71,908 hours, 53,601 cycles
Engine
Pwa JT8D219
Engine time
57,424 hours, 42,217 cycles
Part
Gcu
Condition
Failed
Location
Lt & Rt
Stage of operation
AP
How discovered
O
Nature of condition
H
Precautionary procedure
O

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

DURING SHORT FINAL, TOTAL ACFT ELECTRICAL FAILURE OCCURRED. LANDED ON EMERGENCY POWER. RAN QRH AND LEFT GENERATOR RESET. RIGHT GENERATOR VOLTS AND FREQUENCY READ ZERO. LEFT GCU HAS GCU FAULT. REPLACED LEFT AND RIGHT GCUS IAW AMM 24-20. RAN BOTH ENGINES AND RIGHT GEN STILL INOP. FOUND RIGHT GENERATOR SHAFT SHEARED. REPLACED RIGHT GENERATOR IAW AMM 24-20. ENGINE GENERATOR RUN GOOD. PERFORMED BATTERY AND CHARGER CHECK AMM 24-23-01.

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