# SDR DLM88040740

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 8, 2004
- Submitted: August 9, 2004
- Operation: Air carrier
- Aircraft: N931DL
- Make and model: Doug MD-88
- Registry model: [Doug MD-88](https://openairdocs.org/model/mcdonnell-douglas-md-88) (OpenAirDocs)
- Aircraft serial: 49718
- Aircraft time: 43,179 hours, 34,618 cycles
- Engine time: 27,615 hours, 21,193 cycles
- System (JASC): [3510 · Crew Oxygen System](https://openairdocs.org/jasc/3510)
- Part: Mask
- Part number: 359001066
- Condition: Malfunctioned
- Location: Cockpit Oxygen
- Part time: 27,615 hours, 21,193 cycles
- Stage of operation: CR
- How discovered: C
- Nature of condition: L
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/DLM88040740

## Discrepancy

CAPTS 02 MASK ALLOWS TO FLOW IN BUT NOT TO EXHALE.  REPLACED MASK ASSY.

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