# SDR UALA2011111406185

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 12, 2011
- Submitted: December 8, 2011
- Operation: Air carrier
- Aircraft: N595UA
- Make and model: Boeing 757222
- Aircraft serial: 28748
- Aircraft time: 53,964 hours, 15,084 cycles
- Engine: Pwa PW2037
- System (JASC): [2120 · Air Distribution System](https://openairdocs.org/jasc/2120)
- Part: Unknown
- Condition: Noisy
- Location: Cockpit
- 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/UALA2011111406185

## Discrepancy

VERY HIGH COCKPIT NOISE LEVELS FROM PACK-RECIRC FAN.  ACP'D CHECK OF RECIC FANS AND FILTERS.  FANS AND FILTERS ARE CLEAN.  ACP'D FLIGHT DECK GROUND NOISE LEVEL CHECK.  FLIGHT DECK NOISE WAS BELOW LIMITS OF 70.5 DB.

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