# SDR CALA2013082690738

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 24, 2013
- Submitted: August 26, 2013
- Operation: Air carrier
- Aircraft: [N784UA](https://openairdocs.org/aircraft/N784UA), registered now
- Make and model: Boeing 777222
- Aircraft serial: 26951
- Aircraft time: 72,628 hours, 10,106 cycles
- Engine: Pwa PW40903
- System (JASC): [2430 · DC Generating System](https://openairdocs.org/jasc/2430)
- Part: Coupler
- Condition: Faulty
- Stage of operation: NR
- How discovered: O
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CALA2013082690738

## Discrepancy

FLIGHT CONTROL SYSTEM ANY CONDITION OF THE FLIGHT CONTROL SYSTEM OR IT'S SYSTEM INTERFACES WHICH WOULD PREVENT DISPATCH.  FLIGHT CONTROLS SYSTEM BELOW MINIMUM DISPATCH REQUIREMENTS.  STATUS MSG01- ACTIVE CRUISE HARD;POWER SUPPLY ASSEMBLY (LEFT) HAS NO OUTPUT ON FLIGHT CONTROLS ARINC 629 BUS (LEFT). DB- PRIMARY FLIGHT COMPUTER (RIGHT) MSG02- ACTIVE CRUISE HARD;POWER SUPPLY ASSEMBLY (LEFT) HAS NO OUTPUT ON FLIGHT CONTROLS 629 BUS (LEFT).  MSG-2458811 ACTIVE ER HARD MSG-2458811 ACTIVE ER HARD. MSG 24-58811.  REPLACED 629 COUPLER B24101 IAW MM 23-91-01. OPERATIONS CHECKED OK. FLIGHT CONTROL SYSTEM MESSAGE REPLACED ARINC 629 COUPLERS & PSA-LEFT.

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