# SDR 98ZZZM488

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 23, 1998
- Submitted: March 26, 2000
- Operation: Air carrier
- Aircraft: [N906TW](https://openairdocs.org/aircraft/N906TW), registered now
- Make and model: Doug DC-9-82
- Registry model: [Doug DC-9-82](https://openairdocs.org/model/mcdonnell-douglas-dc-9-82) (OpenAirDocs)
- Aircraft serial: 49160
- System (JASC): [2130 · Cabin Pressure Control System](https://openairdocs.org/jasc/2130)
- Part: Valve
- Part number: 25251X
- Condition: Malfunctioned
- Location: Cabin Press Cont
- Stage of operation: CR
- Nature of condition: O
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/98ZZZM488

## Discrepancy

MCI - FLT 326 - DURING CRUISE, AT FL 280, THE CABIN ALTITUDE ROSE TO 12,000 FT.  REPLACED THE LEFT AND RIGHT FLOW PILOT REGULATOR VALVES MFG P/NS 77530K AND 25251X RESPECTIVELY.  (M)

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