# SDR CALA20190821395

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 19, 2019
- Submitted: August 21, 2019
- Operation: Air carrier
- Aircraft: [N479UA](https://openairdocs.org/aircraft/N479UA), registered now
- Make and model: Airbus A320-232
- Registry model: [Airbus A320-232](https://openairdocs.org/model/airbus-a320-232) (OpenAirDocs)
- Aircraft serial: 1538
- Aircraft time: 58,525 hours, 25,271 cycles
- System (JASC): [2133 · Pressure Regulator/Outflow Valve](https://openairdocs.org/jasc/2133)
- Part: Outflow Valve
- Part number: VFT300B00
- Part serial: 4415
- Condition: Faulted
- Location: Cabin Pressure
- Stage of operation: CR
- How discovered: 9
- Nature of condition: J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CALA20190821395

## Discrepancy

FLIGHT CREW REPORTED AVIONICS VENT SKIN VALVE FAULT ALONG WITH BLOWER FAULT. TOMC UPDATE- PRECAUTIONARY REMOVE AND REPLACE 22HQ SKIN AIR OUTLET VLV. REF TSM TASK 21-26-00-810-84-A, TESTED AEVC ON MCDU, TESTED OK, LAST LEG REPORT, SKIN AIR OUTLET V 22HQ AND ISOL V 24HQ. REMOVED SKIN AIR OUTLET VALVE REF AMM 21-26-53. INSTALLED NEW SKIN AIR OUTLET VALVE REFERENCE AMM 21-26-53-400-001-A. ALSO PREFORMED OPS CHECK REFERENCE AMM 21-26-00-710-001-A. OPS CHECK GOOD. REPLACED DEFECTIVE PART.

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