# SDR CALA2026021713828

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 15, 2026
- Submitted: February 17, 2026
- Operation: Air carrier
- Aircraft: [N653UA](https://openairdocs.org/aircraft/N653UA), registered now
- Make and model: Boeing 767322
- Aircraft serial: 25391
- Aircraft time: 129,324 hours, 19,779 cycles
- System (JASC): [3510 · Crew Oxygen System](https://openairdocs.org/jasc/3510)
- Part: Oxygen Mask
- Part number: MC1019151
- Part serial: 35043
- Condition: Split
- Location: Zone 200
- Part time: 117,526 hours, 18,133 cycles
- 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/CALA2026021713828

## Discrepancy

CAPTAINS CREW OXYGEN MASK HARNESS IS SPLIT, CAUSING OXYGEN LEAKAGE WHEN THE HARNESS IS INFLATED RAISING AND UPDATING SDR ORIGINAL CAPT OXYGEN MASK SWAPPED WITH SECOND OBSERVER OXYGEN MASK IAW AMM 35-11-51-004-059 AND 35-11-51-404-060. CAPT & SECOND OBSERVER OXYGEN MASK PUT BACK IN THE STOWAGE BOX WRT AMM 35-11-51-402-034.

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