# SDR UALA2010122904761

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 27, 2010
- Submitted: December 30, 2010
- Operation: Air carrier
- Aircraft: [N661UA](https://openairdocs.org/aircraft/N661UA), registered now
- Make and model: Boeing 767322
- Aircraft serial: 27158
- Aircraft time: 75,684 hours, 12,270 cycles
- Engine: Pwa PW4060
- System (JASC): [7830 · Engine Thrust Reverser](https://openairdocs.org/jasc/7830)
- Part: Relay
- Condition: Inoperative
- Location: Thrust Reverser
- Stage of operation: CL
- 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/UALA2010122904761

## Discrepancy

"AIR-GND DISAGREE" STATUS MESSAGE APPEARED AT/OR AFTER TAKEOFF.  ACARS DISPLAYS AN "ON".  BITE TEST OF PSEU FAULTING 015 CARD. CARD REPLACED ON 12-18. REPLACED LT REVERSER AIR GROUND SYS 1 RELAY K178 REF WDM 78-34-11. PSEU BIT AND VERIFY TESTS OK.

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