# SDR 96ZZZM72

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 21, 1995
- Submitted: March 26, 2000
- Operation: Air carrier
- Aircraft: N494UE
- Make and model: Bag JETSTM3201
- Aircraft serial: 810
- System (JASC): [2133 · Pressure Regulator/Outflow Valve](https://openairdocs.org/jasc/2133)
- Part: Outflow Valve
- Part number: 2647A000
- Condition: Dirty
- Location: Cabin
- Stage of operation: CR
- Nature of condition: J
- Precautionary procedure: G, H
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/96ZZZM72

## Discrepancy

FLT NR 6586 - IAD-ISP - DURING CRUISE, DECLARED AN EMERGENCY AND LANDED AT ISP DUE TO THE PRESSURIZATION DUMPING AT 15,000 FT, THE 'CABIN' CAPTION ILLUMINATED, AND THE CABIN OXYGEN MASKS DEPLOYED.  THE A/C LANDED AT ISP WITH NO FURTHER INCIDENT.  HOWEVER, THE OXYGEN SYSTEM WAS READING 0.  MX OPENED DMI NR 42402 IAW MEL 21-14 ON THE PRESS SYSTEM, AND DMI NR 42403 IAW MEL 35-1 ON THE OXYGEN SYSTEM.  MX LATER CLEARED DMI NR 42403 ON 12-22-95, BY CLEANING THE OUTFLOW VALVE AND ALSO SECURING LOOSE SENSE LINE.  OPS CHECK GOOD.  CLEARED DMI NR 42403 ON 12-22-95, BY REPLACING SEAT 3BC STOWAGE OXYGEN MASK AND STOWED REMAINING OXYGEN MASKS.  OPS CHECK GOOD.  A/C WAS RELEASED AND RETURNED TO SERV.  REF VTZA96051.

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