# SDR UALA2011051702430

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 17, 2011
- Submitted: June 22, 2011
- Operation: Air carrier
- Aircraft: [N221UA](https://openairdocs.org/aircraft/N221UA), registered now
- Make and model: Boeing 777222
- Aircraft serial: 30552
- Aircraft time: 41,320 hours, 5,179 cycles
- Engine: Pwa PW40903
- System (JASC): [7532 · Compressor Bleed Valve](https://openairdocs.org/jasc/7532)
- Part: Thermocouple
- Condition: Faulty
- Location: Nr 2 Engine
- Stage of operation: NR
- How discovered: O
- Nature of condition: N
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/UALA2011051702430

## Discrepancy

NR 2 ENGINE 2.9 BLEED VALVE TC PROBE CHANNEL B IS OUT OF RANGE MESSAGE.  REPLACED 2.9 START BLEED VALVE THERMOCOUPLE, OPS GOOD.

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