What was found
DURING TOWING APU GEN FELL OF LINE, LEFT 115 VAC MAIN BUS TIE HAS UNBALANCED CURRENT. REPLACED APU GCU.
- Difficulty date
- April 4, 2009
- Submitted
- April 8, 2009
- Operation
- Air carrier
- Aircraft
- N776UA
- Make and model
- Boeing 777222
- Aircraft serial
- 26937
- Aircraft time
- 52,675 hours, 9,780 cycles
- Engine
- Pwa PW4077
- System (JASC)
- 2424 · AC Regulator
- Part
- Gcu
- Part number
- 756603E
- Part serial
- 0144
- Condition
- Malfunctioned
- Location
- Apu
- Stage of operation
- IN
- How discovered
- O
- Nature of condition
- O
- Precautionary procedure
- O
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.