SDR UALA2013071204886

Service difficulty report · Feeder Cable · Boeing 777222

Difficulty date: July 9, 2013
Submitted: July 12, 2013
Operation: Air carrier
Aircraft: N777UA
Make and model: Boeing 777222
Aircraft serial: 26916
Aircraft time: 73,772 hours, 13,202 cycles
Engine: Pwa PW4077
System (JASC): 2497 · Electrical Power System Wiring
Part: Feeder Cable
Condition: Damaged
Location: Back Up Gen
Stage of operation: NR
How discovered: 9
Nature of condition: O
Precautionary procedure: O

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

What was found

ELECTRICAL BACKUP GENERATOR, OFF DUE TO A PROTECTIVE TRIP. LATCHED CLIMB MODE DEPENDENT, BACKUP GENERATOR (R) OIL PRESSURE IS LOW. DB- BACKUP CONVERTER MSG-2446090 LATCHED CL MODE. REPLACED BACKUP GENERATOR IAW MM, OPS TEST OK NO LEAKS. FAULT REOCCURED. SERVICED RT BUG RAN ENG, NO GOOD. ACCOMPLISHED FIM 24-25 TASK 856, FOUND FEEDER T-2 AND T-3 SWAPPED, SECURED AND BUG OPS NORMAL.