# SDR UALA2011052302524

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 22, 2011
- Submitted: June 22, 2011
- Operation: Air carrier
- Aircraft: [N774UA](https://openairdocs.org/aircraft/N774UA), registered now
- Make and model: Boeing 777222
- Aircraft serial: 26936
- Aircraft time: 62,145 hours, 11,953 cycles
- Engine: Pwa PW4077
- System (JASC): [2450 · AC Power Distribution System](https://openairdocs.org/jasc/2450)
- Part: Control Unit
- Part number: BPE35360
- Condition: Malfunctioned
- Location: Electrical Sys
- Stage of operation: NR
- 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/UALA2011052302524

## Discrepancy

EICAS MSG "HYD PRESS PRI C1" FAULT DISPLAYED.  CREW CYCLED SW AND FAULT REOCCURED.  DISCONNECTED CAP AND STOWED CONNECTOR J8, ON P100 PANEL PER MEL.  MSG 2912015 HIT 2 LEGS BEFORE SYSTEM DEACTIVATED.  REPLACED ELCU M29303 & TESTED REF MM, SYSTEM TESTS NORMAL.

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