SDR UALA2012070203534

Service difficulty report · B-Nut · Boeing 777222

Difficulty date: July 2, 2012
Submitted: July 3, 2012
Operation: Air carrier
Aircraft: N778UA
Make and model: Boeing 777222
Aircraft serial: 26940
Aircraft time: 65,644 hours, 11,600 cycles
Engine: Pwa PW4077
System (JASC): 2421 · AC Generator-Alternator
Part: B-Nut
Condition: Unsecure
Location: Generator
Stage of operation: IN
How discovered: O
Nature of condition: O
Precautionary procedure: K

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

What was found

ELEC BACKUP GEN R RIGHT BACKUP GENERATOR IS OFF OR HAS FAILED. ADVISORY CREW COMMENTS: R ELECT BUG INOP FAILED ONCE IN CRUISE RESET 1 TIME PER CHECKLIST, RESET OK. MSG-2446090 LATCHD CL MODE. ACPD FIM 24-25 TASK 862, RIGHT BUG OIL LEVEL LOW, SECURED LOOSE 'B' NUT AT BUG AND SERVICED, ACPD RIGHT ENGINE RUN, NO LEAKS OR MSGS.