# SDR MTNA20210910002

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 10, 2021
- Submitted: September 10, 2021
- Operation: Air carrier
- Aircraft: [N987FX](https://openairdocs.org/aircraft/N987FX), registered now
- Make and model: Cessna 208B
- Registry model: [Cessna 208B](https://openairdocs.org/model/cessna-208b) (OpenAirDocs)
- Aircraft serial: 208B2390
- Aircraft time: 4,362 hours, 4,870 cycles
- System (JASC): [3510 · Crew Oxygen System](https://openairdocs.org/jasc/3510)
- Part: Oxygen Mask
- Part number: 359A3552
- Part serial: 9229
- Condition: Inoperative
- Location: Pilot'S
- Stage of operation: CR
- How discovered: O
- Nature of condition: S
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/MTNA20210910002

## Discrepancy

PILOT OXYGEN MASK UNUSABLE. MAINTENANCE INSPECTED AND RESECURED LENS TO MASK AND PERFORMED OPERATIONAL CHECK.

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