# SDR UALA2012071303793

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 12, 2012
- Submitted: August 24, 2012
- Operation: Air carrier
- Aircraft: N411UA
- Make and model: Airbus A320-232
- Registry model: [Airbus A320-232](https://openairdocs.org/model/airbus-a320-232) (OpenAirDocs)
- Aircraft serial: 464
- Aircraft time: 62,242 hours, 23,009 cycles
- Engine: Iae V2527A5
- System (JASC): [2133 · Pressure Regulator/Outflow Valve](https://openairdocs.org/jasc/2133)
- Part: Outflow Valve
- Part number: 2079003AC
- Part serial: 1268
- Condition: Faulted
- Location: Cabin Pressure
- Stage of operation: NR
- How discovered: O
- Nature of condition: E, J
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/UALA2012071303793

## Discrepancy

HEARD & FELT LOW FREQUENCY RUMBLE.  NO PRESSURE DIFFERENCES OFF ENGINE BLEED AIR.  CPC 2 SYS IN CHARGE.  REPLACED AVIONICS DUCT PER AMM.  PRESSURIZED ALL DUCTS AND CHECKED FOR ADDITIONAL LEAKS -NONE FOUND.  PERFORMED AVIONICS EQUIPMENT VENTILATION ADJUSTMENT AND TEST PER AMM, OPS CHECKED GOOD.

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