# SDR 97ZZZX2028

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 17, 1997
- Submitted: March 26, 2000
- Operation: General aviation
- Aircraft: [N501CF](https://openairdocs.org/aircraft/N501CF), registered now
- Make and model: Cessna 501
- Registry model: [Cessna 501](https://openairdocs.org/model/cessna-501) (OpenAirDocs)
- Aircraft serial: 5010128
- System (JASC): [2130 · Cabin Pressure Control System](https://openairdocs.org/jasc/2130)
- Part: Hose
- Condition: Failed
- Location: Cabin Press
- Stage of operation: CR
- Nature of condition: J
- Precautionary procedure: B, G
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/97ZZZX2028

## Discrepancy

DURING CRUISE AT FL 370,  PRESSURIZATION SET FOR FL 380 WITH CABIN AT APPROX 7,000 FEET.  CREW HEARD A DULL NOISE, CABIN OXY MASK DEPLOYED, MASTER WARN RED LIGHTS AND CABIN ALTITUDE INCREASING.  ACFT DIVERTED FOR REPAIR.  FOUND FAILED BLEED SYS HOSE AND A NON-RETURN VALVE OUT OF LIMITS AT .75 INCH OPEN.

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