What was found
R AC BUS FAILURE IN DESCENT, QRH PROC RESTORED PWR W/R ISL ILLUMINATED. PERFORMED BIT CHECK ON BPCU, FOUND DP TRIP/MAIN BUS/OVERLAP ZONE MESSAGE. REMOVED AND REPLACED RT GCU, OPERATIONAL CHECK GOOD IAW AMM 24-22-02.
- Difficulty date
- April 12, 2018
- Submitted
- April 12, 2018
- Operation
- Air carrier
- Aircraft
- N1409A
- Make and model
- Boeing 767306
- Aircraft serial
- 27960
- Aircraft time
- 88,108 hours, 16,345 cycles
- System (JASC)
- 2424 · AC Regulator
- Part
- Gcu
- Part number
- 734284F
- Part serial
- 7525
- Condition
- Malfunctioned
- Stage of operation
- AP
- How discovered
- O
- Nature of condition
- J
- Precautionary procedure
- O
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.