# SDR AALA202002139017

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 12, 2020
- Submitted: February 13, 2020
- Operation: Air carrier
- Aircraft: [N802AW](https://openairdocs.org/aircraft/N802AW), registered now
- Make and model: Airbus A319-132
- Registry model: [Airbus A319-132](https://openairdocs.org/model/airbus-a319-132) (OpenAirDocs)
- Aircraft serial: 924
- Aircraft time: 68,330 hours, 31,021 cycles
- System (JASC): [2130 · Cabin Pressure Control System](https://openairdocs.org/jasc/2130)
- Part: Computer
- Part number: C13043BA05
- Part serial: 5552
- Condition: Faulty
- Location: Nr 2
- Part time: 66,209 hours, 33,453 cycles
- Stage of operation: CL
- How discovered: O
- Nature of condition: J
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AALA202002139017

## Discrepancy

AIRCRAFT WAS GROUNDED: ON SYS 2 VERY LARGE PRESSURE BUMPS IN CLIMB AND CRUISE. WITH PSID 7.6 OR HIGHER, OUTFLOW VALVE CLOSES & EXTRACT VALVE OPENS (AMBER). PRESSURE IN CABIN FLUCTUATES FROM +1000 TO-1000. THE FLUCTUATIONS ARE RANDOM AND THRUST SETTINGS SEEM TO HAVE NO EFFECT ON PRESSURE BUMPS. REMOVED AND REPLACED FLIGHT MANAGEMENT COMPUTER (FMGC) NO. 2.

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