# SDR DALA2026020500836

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 21, 2026
- Submitted: February 5, 2026
- Operation: Air carrier
- Aircraft: [N821NW](https://openairdocs.org/aircraft/N821NW), registered now
- Make and model: Airbus A330-323
- Registry model: [Airbus A330-323](https://openairdocs.org/model/airbus-a330-323) (OpenAirDocs)
- Aircraft serial: 0865
- Aircraft time: 81,102 hours, 10,577 cycles
- System (JASC): [5270 · Door Warning System](https://openairdocs.org/jasc/5270)
- Part: Control Unit
- Part number: 300067265
- Part serial: 1240
- Condition: Faulted
- Location: Zone 800
- Part time: 87,343 hours, 11,379 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/DALA2026020500836

## Discrepancy

R3 DOOR WILL NOT DISARM.   REPLACED IPCU 16DS PER A330 AMM 25-27. (1412202)

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