# SDR CALA2012122000869

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 20, 2012
- Submitted: December 20, 2012
- Operation: Air carrier
- Aircraft: [N57864](https://openairdocs.org/aircraft/N57864), registered now
- Make and model: Boeing 757-33N
- Registry model: [Boeing 757-33N](https://openairdocs.org/model/boeing-757-33n) (OpenAirDocs)
- Aircraft serial: 32588
- Aircraft time: 37,871 hours, 12,191 cycles
- System (JASC): [2420 · AC Generation System](https://openairdocs.org/jasc/2420)
- Part: Buss
- Condition: Failed
- Location: Ac System
- 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/CALA2012122000869

## Discrepancy

RT AC BUSS FAILURE IN FLIGHT. RESET IAW QRH RT AC BUS FAIL EICAS MSG RT GEN HAD TRIPPED AS WELL.  PERFORMED BITE TASK 24-20-00-810-80 2.  RT GEN SYS FAULTED ''DP TRIP;  MAIN BUS OVERLAP ZONE''.  INSPEC TED P32 PANEL AND RT GCU BENCH PLUG, ALL OK. RAN BOTH ENGS AND CKD BOTH GENS AND BUS TIES. ALL NORMAL. CONFERRED WITH TOMC.

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