What was found
'ELEC GEN SYS 4' EICAS STATUS MESSAGE DISPLAYED. IDG FAILURE OR GENERATOR SYSTEM CONTROL OR FEEDER FAULT. REPLACED NR 4 GCU PER MM 24 -23-01-401. ENGINE RUN PER JRH. SYSTEM OPS OK.
- Difficulty date
- May 6, 2012
- Submitted
- June 5, 2012
- Operation
- Air carrier
- Aircraft
- N116UA
- Make and model
- Boeing 747422
- Aircraft serial
- 26908
- Aircraft time
- 54,845 hours, 6,407 cycles
- Engine
- Pwa PW4056
- System (JASC)
- 2421 · AC Generator-Alternator
- Part
- Gcu
- Part number
- 60B401621
- Part serial
- 98
- Condition
- Failed
- Location
- Nr 4
- Stage of operation
- NR
- How discovered
- 9
- Nature of condition
- J
- Precautionary procedure
- O
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.