# SDR ASAA201805174663

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 15, 2018
- Submitted: May 17, 2018
- Operation: Air carrier
- Aircraft: [N453AS](https://openairdocs.org/aircraft/N453AS), registered now
- Make and model: Boeing 737990ER
- Aircraft serial: 36354
- Aircraft time: 17,242 hours, 5,724 cycles
- System (JASC): [3510 · Crew Oxygen System](https://openairdocs.org/jasc/3510)
- Part: Hose
- Condition: Disconnected
- Location: Oxygen Mask
- Component: Oxygen Mask
- Component part number: 174692N9REVB
- Stage of operation: CR
- How discovered: O
- Nature of condition: O
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA201805174663

## Discrepancy

DURING FLT AT 34000 FEET,  THE CAPTAIN`S OXYGEN MASK HOSE DISCONNECTED.  ACFT GROUNDED.   REMOVED AND REPLACED THE OXYGEN MASK AMM 35-12-85. OPS NORMAL.

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