# SDR UALA2011052702602

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 27, 2011
- Submitted: June 22, 2011
- Operation: Air carrier
- Aircraft: [N220UA](https://openairdocs.org/aircraft/N220UA), registered now
- Make and model: Boeing 777222
- Aircraft serial: 30223
- Aircraft time: 41,756 hours, 5,187 cycles
- Engine: Pwa PW40903
- System (JASC): [2611 · Smoke Detection](https://openairdocs.org/jasc/2611)
- Part: Smoke Detector
- Condition: Malfunctioned
- Location: Lavatory
- Stage of operation: IN
- How discovered: C
- Nature of condition: L
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/UALA2011052702602

## Discrepancy

SMOKE DETECTOR LAV FWD 3L DOOR FAULTING CSCP TEST.  CABIN TEST STILL FAULTING SMOKE DETECTOR.  REPLACED DETECTOR, NO HELP.  REPLACED OEU 2-2-16, NO HELP. FOUND LAV OEU AT FAULT.  RECONNECTED SMOKE DETECTOR IN LAV RAN TEST, OPS NORMAL. NO SMOKE DETECTOR FAULT. AFTER OEU SOFTWARE LOAD, OPS TEST NORMAL.

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