What was found
AIR TURNBACK - NR 1 BUS FALLS OFF THE LINE WHEN POWER IS ADVANCED BEYOND MID RANGE. NR 1 BUS FALLS OFF WITH APU RUNNING. REMOVED AND REPLACED NR 1 ENGINE CSD AND A/C GENERATOR PER MM.
- Difficulty date
- July 6, 2011
- Submitted
- July 7, 2011
- Operation
- Air carrier
- Aircraft
- N399WN
- Make and model
- Boeing 7373H4
- Aircraft serial
- 27693
- Aircraft time
- 53,946 hours, 44,460 cycles
- System (JASC)
- 2410 · Alternator-Generator Drive
- Part
- Csd
- Part number
- 735511A
- Part serial
- B3507
- Condition
- Faulty
- Location
- Nr 1 Engine
- Stage of operation
- UK
- How discovered
- O
- Nature of condition
- O
- Precautionary procedure
- D
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.