# SDR UALA2011021800846

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 15, 2011
- Submitted: March 10, 2011
- Operation: Air carrier
- Aircraft: [N206UA](https://openairdocs.org/aircraft/N206UA), registered now
- Make and model: Boeing 777222
- Aircraft serial: 30212
- Aircraft time: 52,098 hours, 7,540 cycles
- Engine: Pwa PW4090
- System (JASC): [7830 · Engine Thrust Reverser](https://openairdocs.org/jasc/7830)
- Part: Transducer
- Part number: 1U15271
- Condition: Faulty
- Location: Thrust Reverser
- Stage of operation: IN
- How discovered: V
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/UALA2011021800846

## Discrepancy

EICAS STATUS MESSAGE OF ENG REVERSER L DISPLAYED UPON ARRIVAL. FOUND MAINT MESSAGE 78-51821 T-R POS TRANSDUCER (RT SLEEVE) (LT ENG CHAN B) SIGNAL OUT OF RANGE. DEFERRED.  COMPLIED WITH.  REPLACED RT SLEEVE RVDT IAW FIM.  REVERSER FAILED WITH MSG 78- 61811 (CHANNEL A & B DO NOT AGREE) REPLACED RT SLEEVE RVDT AGAIN . OPS CHECKED GOOD.

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