# SDR 98UAL900157

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 19, 1998
- Submitted: March 26, 2000
- Operation: Air carrier
- Aircraft: N348UA
- Make and model: Boeing 737322
- Aircraft serial: 24252
- Engine: Ge CFM56*
- System (JASC): [5312 · Fuselage Main, Bulkhead](https://openairdocs.org/jasc/5312)
- Part: Bulkhead Seal
- Condition: Failed
- Location: Press Blkhd
- Component: Boeing, 10327431
- Stage of operation: NR
- Nature of condition: J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/98UAL900157

## Discrepancy

UNABLE TO MAINTAIN CABIN PRESSURIZATION.  OUTFLOW VALVE INDICATED FULL CLOSED IN THE AUTO MODE.  *S/D*  ACCOMPLISHED FUSELAGE LEAK CHECK AND FOUND THAT THE FLEXIBLE PRESSURE SEAL AT THE PRESSURE BULKHEAD HAD BLOWN.  THE FLEXIBLE RUBBER BOOT WAS REPLACED.  PRESSURIZATION WAS NORMAL AFTER THE BOOT REPLACEMENT.

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