Service difficulty report · Generator · Boeing 777222

Difficulty date
July 3, 2012
Submitted
August 24, 2012
Operation
Air carrier
Aircraft
N778UA
Make and model
Boeing 777222
Aircraft serial
26940
Aircraft time
65,659 hours, 11,602 cycles
Engine
Pwa PW4077
Part
Generator
Part number
1701768
Part serial
405
Condition
Failed
Location
Nr 2 Backup
Stage of operation
NR
How discovered
9
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

RIGHT BACKUP GENERATOR IS OFF OR HAS FAILED. ADVISORY MESSAGE 2446090 LATCHED CL MODE. FOUND RT BUG OIL LEVEL LOW AGAIN. REPLACED RT BACKUP GENERATOR. RAN ENGINE, OPS CHECK & LEAK CHECK GOOD. NO EVIDENCE OF EXTERNAL LEAKAGE AT BUG OR AIR OIL COOLER.