# SDR DALA2026101905722

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 18, 2026
- Submitted: October 19, 2026
- Operation: Air carrier
- Aircraft: [N955AT](https://openairdocs.org/aircraft/N955AT), registered now
- Make and model: Boeing 717-200
- Registry model: [Boeing 717-200](https://openairdocs.org/model/boeing-717-200) (OpenAirDocs)
- Aircraft serial: 55017
- Aircraft time: 67,103 hours, 48,764 cycles
- System (JASC): [3510 · Crew Oxygen System](https://openairdocs.org/jasc/3510)
- Part: Oxygen Mask
- Condition: Faulted
- Location: Zone 200
- Stage of operation: IN
- How discovered: V
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/DALA2026101905722

## Discrepancy

F/O O2 MASK-SETTINGS DO NOT ALIGN WITH INSIDE INDICATOR IE AT 100% THE INDICATOR READS EMERGENCY,   R/R F/O O2 MASK PER B717 AMM 35-13. (9520956) (AIRCRAFT GROUNDED).

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