# SDR AALA991326

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 1, 1999
- Submitted: March 26, 2000
- Operation: Air carrier
- Aircraft: [N1425A](https://openairdocs.org/aircraft/N1425A), registered now
- Make and model: Fokker F.28 MK 0100
- Registry model: [Fokker F.28 MK 0100](https://openairdocs.org/model/fokker-f-28-mk-0100) (OpenAirDocs)
- Aircraft serial: 11408
- System (JASC): [2130 · Cabin Pressure Control System](https://openairdocs.org/jasc/2130)
- Part: Check Valve
- Part number: A90A
- Condition: Defective
- Location: Fwd Fuselage
- Stage of operation: CR
- Nature of condition: J
- Precautionary procedure: B, A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AALA991326

## Discrepancy

MEM - FLT 1460 - EN ROUTE DFW-GSO, UNABLE TO CONTROL CABIN PRESSURIZATION IN AUTO OR MANUAL MODE.  EMERGENCY DESCENT ACCOMPLISHED TO 10,000 FT.  AIRCRAFT DIVERTED TO MEM AND LANDED WITHOUT INCIDENT.  AIRCRAFT FERRIED TO DFW.  REPLACED PRECONDITIONED AIR CHECK VALVE.  ALSO, REPLACED PRESSURIZATION CONTROL PANEL.  SYSTEM GROUND CHECKED NORMAL OPERATION.  FUNCTIONAL CHECK FLIGHT ACCOMPLISHED WITH SATISFACTORY OPERATION NOTED.  (M)

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