# SDR AALA202412200047

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 17, 2024
- Submitted: December 20, 2024
- Operation: Air carrier
- Aircraft: [N918US](https://openairdocs.org/aircraft/N918US), registered now
- Make and model: Airbus A321-231
- Registry model: [Airbus A321-231](https://openairdocs.org/model/airbus-a321-231) (OpenAirDocs)
- Aircraft serial: 6443
- Aircraft time: 30,659 hours, 12,596 cycles
- System (JASC): [3520 · Passenger Oxygen System](https://openairdocs.org/jasc/3520)
- Part: Oxygen Mask
- Condition: Unwanted Deploy
- Location: Zone 200
- Stage of operation: CL
- 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/AALA202412200047

## Discrepancy

AIRCRAFT WAS GROUNDED: ON TAKEOFF, O2 MASKS DROPPED AT 16 ABC. AIRCRAFT RETURNED TO FIELD, EMERGENCY DECLARED LANDED WITHOUT INCIDENT. **SUPPLEMENTAL REPORT FOR SDR AALA202412180047.** (CLOSED) MAINTENANCE FOUND O2 MASK UNPROPERLY PACKED, PUSHING DOWN ON CONTAINER DOOR. REPACKED O2 MASKS IAW AMM 35-21-43.

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