# SDR ABXA9600001

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 28, 1995
- Submitted: March 26, 2000
- Operation: Air carrier
- Aircraft: N951AX
- Make and model: Doug DC-9-41
- Registry model: [Doug DC-9-41](https://openairdocs.org/model/douglas-dc-9-41) (OpenAirDocs)
- Aircraft serial: 47616
- System (JASC): [2130 · Cabin Pressure Control System](https://openairdocs.org/jasc/2130)
- Part: Valve
- Part number: 10315411
- Condition: Defective
- Location: Cabin
- Stage of operation: CL
- Nature of condition: J
- Precautionary procedure: B, A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ABXA9600001

## Discrepancy

AIRCRAFT LOST ALL CABIN PRESSURE FROM FL 350, COULD NOT CONTROL MANUALLY OR AUTOMATICALLY.  FOUND FORWARD PRESSURIZATION VALVE OPENING AT 7.6 PSI.  REPLACED FORWARD SAFETY VALVE IAW DC-9 MM AND OPS CHECKED GOOD.

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