SDR USAA20110329BB025

Service difficulty report · Generator · Boeing 7672B7

Difficulty date: March 25, 2011
Submitted: March 29, 2011
Operation: Air carrier
Aircraft: N256AY
Make and model: Boeing 7672B7
Aircraft serial: 26847
System (JASC): 2421 · AC Generator-Alternator
Part: Generator
Part number: 727810C
Condition: Inoperative
Location: Apu
Part time: 34,275 hours
Stage of operation: DE
How discovered: O
Nature of condition: H
Precautionary procedure: K

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

What was found

PHL - FLT 711 EN-ROUTE ZRH TO PHL. DURING DESCENT THROUGH 15,000 FEET, WITH THE LEFT ENGINE GENERATOR SYSTEM ALREADY ON MEL, THE APU GENERATOR DROPPED OFF LINE. THE FLIGHT LANDED WITHOUT FURTHER INCIDENT. MAINTENANCE REPLACED THE LEFT GENERATOR CONTROL UNIT AND THE APU GENERATOR.

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