# SDR UALA2013022801212

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 27, 2013
- Submitted: April 8, 2013
- Operation: Air carrier
- Aircraft: [N648UA](https://openairdocs.org/aircraft/N648UA), registered now
- Make and model: Boeing 767322
- Aircraft serial: 25285
- Aircraft time: 87,043 hours, 13,875 cycles
- Engine: Pwa PW4060
- System (JASC): [2121 · Air Distribution Fan](https://openairdocs.org/jasc/2121)
- Part: Control Valve
- Condition: Faulty
- Location: Recirc Fan
- Stage of operation: NR
- How discovered: O
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/UALA2013022801212

## Discrepancy

COCKPIT FAR TOO MUCH NOISE WITH PACKS ON.  CANNOT HEAR CHECKLIST OR ATC GROUND AND IN AIR.  REPLACED AIR RECIRCULATION FAN CONTROL VALVE, OPS CHECK GOOD.

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