# SDR CALA2025102410481

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 23, 2025
- Submitted: October 24, 2025
- Operation: Air carrier
- Aircraft: [N91007](https://openairdocs.org/aircraft/N91007), registered now
- Make and model: Boeing 787-10
- Registry model: [Boeing 787-10](https://openairdocs.org/model/boeing-787-10) (OpenAirDocs)
- Aircraft serial: 40929
- Aircraft time: 27,382 hours, 4,012 cycles
- System (JASC): [3530 · Portable Oxygen System](https://openairdocs.org/jasc/3530)
- Part: Oxygen Bottle
- Condition: Used
- Location: Zone 200
- Stage of operation: IN
- How discovered: 9
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CALA2025102410481

## Discrepancy

EMERGENCY O2 4L USED.  REMOVED AND REPLACED EMERGENCY O2 BOTTLE AT 4L DOOR WITH FULL SERVICEABLE UNIT. REF AMM 35-31-03. PARTS USED: 78-3531-3-0007, QTY :1

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