# SDR 95ZZZM473

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 13, 1995
- Submitted: March 26, 2000
- Operation: Air carrier
- Aircraft: N498US
- Make and model: Fokker F.28 MK4000
- Registry model: [Fokker F.28 MK4000](https://openairdocs.org/model/fokker-f-28-mk4000) (OpenAirDocs)
- Aircraft serial: 11181
- System (JASC): [2130 · Cabin Pressure Control System](https://openairdocs.org/jasc/2130)
- Part: Relay
- Condition: Faulty
- Location: Left
- Stage of operation: CL
- Nature of condition: O
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/95ZZZM473

## Discrepancy

CLT - FLT NR 0690 - THE AIRCRAFT DID NOT PRESSURIZE AFTER TAKEOFF.  THE CAPTAIN DECIDED TO RETURN TO CLT.  NO EMERGENCY WAS DECLARED.  MAINTENANCE REPLACED THE AIR CONDITIONING S/O RELAY AND THE RATE CONTROL VALVE.  REFERENCE NR USAA950896.

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