# SDR AALA2019100879027

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 5, 2019
- Submitted: October 8, 2019
- Operation: Air carrier
- Aircraft: [N8009T](https://openairdocs.org/aircraft/N8009T), registered now
- Make and model: Airbus A319-115
- Registry model: [Airbus A319-115](https://openairdocs.org/model/airbus-a319-115) (OpenAirDocs)
- Aircraft serial: 5788
- Aircraft time: 16,879 hours, 8,071 cycles
- System (JASC): [2130 · Cabin Pressure Control System](https://openairdocs.org/jasc/2130)
- Part: Control Valve
- Part number: 1806D000002
- Part serial: 7867
- Condition: Faulted
- Location: Left
- Stage of operation: NR
- 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/AALA2019100879027

## Discrepancy

AIRCRAFT WAS GROUNDED: PILOT REPORTS APPROXIMATELY EVERY 20 SECONDS THE CABIN PRESSURE FLUCTUATES CAUSING CABIN ALTITUDE TO CHANGE. CABIN VERT SPEED MOVES UP TO 400 FT/MIN. SYSTEM ACTS THE SAME ON BOTH SYSTEMS. MAINTENANCE FOUND L/H FLOW CONTROL VALVE 23HB AT FAULT. REMOVED AND REPLACED THE L/H FLOW CONTROL VALVE IAW AMM 21-51-51. OPS PLUS LEAK CHECK GOOD.

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