# SDR DL73K990760

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 7, 1999
- Submitted: March 26, 2000
- Operation: Air carrier
- Aircraft: N303DL
- Make and model: Boeing 737232
- Aircraft serial: 23075
- System (JASC): [3510 · Crew Oxygen System](https://openairdocs.org/jasc/3510)
- Part: Mask
- Part number: MC1025104
- Condition: Leaking
- Location: Cockpit
- Stage of operation: CR
- Nature of condition: O
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/DL73K990760

## Discrepancy

IN CRUISE, O2 GAUGE INDICATED ZERO. SUPPLY AT MASK NIL.  ACCOMPLISHED POM PROCEDURE.  REPLACED BOTTLE AND FOUND OBS MASK LEAKING.  REPLACED MASK, SYS LEAK CHECKS OK.

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