# SDR 96ZZZX2916

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 27, 1996
- Submitted: March 26, 2000
- Operation: General aviation
- Aircraft: [N295FA](https://openairdocs.org/aircraft/N295FA), registered now
- Make and model: Beech 400BEECH
- Aircraft serial: RK68
- System (JASC): [2133 · Pressure Regulator/Outflow Valve](https://openairdocs.org/jasc/2133)
- Part: Regulator
- Part number: 21034012
- Condition: Faulty
- Location: Cabin Altitude
- Part time: 1,013 hours
- Stage of operation: DE
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/96ZZZX2916

## Discrepancy

CABIN ALTITUDE WOULD NOT DESCEND WITH AIRCRAFT.  MAINTENANCE FOUND NO VACUUM ON TEST PORT NR 3.  FURTHER TROUBLESHOOTING ISOLATED FAULTY VACUUM REGULATOR.  SUSPECT CAUSE:  STICKY BELLOWS INSIDE REGULATOR.  'COLD-SOAKING' CAN BE RULED OUT.

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