# SDR DALA2021120307466

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 30, 2021
- Submitted: December 3, 2021
- Operation: Air carrier
- Aircraft: [N402DX](https://openairdocs.org/aircraft/N402DX), registered now
- Make and model: Airbus A330-941
- Registry model: [Airbus A330-941](https://openairdocs.org/model/airbus-a330-941) (OpenAirDocs)
- Aircraft serial: 1920
- Aircraft time: 8,743 hours, 964 cycles
- System (JASC): [5270 · Door Warning System](https://openairdocs.org/jasc/5270)
- Part: None
- Condition: None
- Stage of operation: IN
- How discovered: O
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/DALA2021120307466

## Discrepancy

SHIP 3402 WHILE PERFORMING ASPSU TEST WC 5271-4001 GOT RED UNIT FAIL LIGHT ON TEST PANEL AND ASPSU FAIL WITH CIDS TEST. CORRECTIVE ACTION: REPLACED ASPSU. (7941087)

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.