# SDR UIEA2019080904975

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 8, 2019
- Submitted: August 9, 2019
- Operation: Air carrier
- Aircraft: [N1499A](https://openairdocs.org/aircraft/N1499A), registered now
- Make and model: Boeing 767328
- Aircraft serial: 27428
- Aircraft time: 78,538 hours, 17,183 cycles
- System (JASC): [2450 · AC Power Distribution System](https://openairdocs.org/jasc/2450)
- Part: Buss
- Condition: Deactivated
- Location: Lt & Rt
- Stage of operation: CR
- How discovered: O
- Nature of condition: J
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/UIEA2019080904975

## Discrepancy

LEFT AND RIGHT UTILITY BUS BOTH DE-ENERGIZED IN CRUISE.  LT & RT UTILITY MESSAGES APPEARED, RAN QRH AND BUS RESET, GALLEY OVEN WAS ON AT THE TIME.  PERFORMED BPCU BITE PROCEDURES AND NO FAULTS NOTED REF FIM 24-20 FAULT TREE 801.

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