# SDR UALA2011010600091

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 6, 2011
- Submitted: February 3, 2011
- Operation: Air carrier
- Aircraft: [N210UA](https://openairdocs.org/aircraft/N210UA), registered now
- Make and model: Boeing 777222
- Aircraft serial: 30216
- Aircraft time: 39,052 hours, 8,611 cycles
- Engine: Pwa PW4077
- System (JASC): [3610 · Pneumatic Distribution System](https://openairdocs.org/jasc/3610)
- Part: Precooler
- Part number: 23417441
- Part serial: 18294
- Condition: Leaking
- Location: Cabin Air
- Stage of operation: IN
- How discovered: 9
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/UALA2011010600091

## Discrepancy

NR 1 ENG, PNEU LEAKAGE NOISE FROM UNDER COWLING.  FOUND AIR LEAK FROM PRECOOLER.   NR 1 ENG AIR LEAK FROM PRECOOLER, ALSO FAILS LEAKAGE TEST.  RECEIVED PARTS AND TOOLING 0030.  PRECOOLER REMOVED AT 0200.  REPLACED L ENG PRECOOLER.

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