# SDR UALA2012020600707

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 5, 2012
- Submitted: March 12, 2012
- Operation: Air carrier
- Aircraft: [N221UA](https://openairdocs.org/aircraft/N221UA), registered now
- Make and model: Boeing 777222
- Aircraft serial: 30552
- Aircraft time: 44,779 hours, 5,605 cycles
- Engine: Pwa PW40903
- System (JASC): [7520 · Engine Cooling System](https://openairdocs.org/jasc/7520)
- Part: Valve
- Part number: 1110V07003
- Condition: Faulty
- Location: Nr 2 Engine
- Stage of operation: IN
- How discovered: O
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/UALA2012020600707

## Discrepancy

NR 2 ENG LWR TVBC AIR SHUTOFF VALVE INDICATOR PIN  FOUND.  FOUND INDICATOR PIN BROKEN.  REPLACED INDICATOR PIN PCN 645-4515 AND ACP CLUNK TEST REF MM, VALVE OPERATES NORMALLY.  NEEDS TO BE REPLACED WITHIN 100 FLT HRS.  INSTALLED VALVE ASSY AND ALL RELATED PLUMBING.

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