# SDR DALA2025042203127

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 17, 2025
- Submitted: April 22, 2025
- Operation: Air carrier
- Aircraft: [N378DN](https://openairdocs.org/aircraft/N378DN), registered now
- Make and model: Airbus A321-211
- Registry model: [Airbus A321-211](https://openairdocs.org/model/airbus-a321-211) (OpenAirDocs)
- Aircraft serial: 8822
- Aircraft time: 18,098 hours, 7,658 cycles
- System (JASC): [5270 · Door Warning System](https://openairdocs.org/jasc/5270)
- Part: Proximity Switch
- Condition: Faulted
- Location: Zone 800
- Stage of operation: IN
- How discovered: O
- Nature of condition: N
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/DALA2025042203127

## Discrepancy

SHIP 3078 DOOR 2L INDICATED IT WAS ARMED ON THE GROUND BUT INDICATED DISARMED IN THE AIR FLIGHT ATTENDANT VERIFIED IT WAS STILL ARMED CORRECT INDICATION APPEARED AGAIN 5 MIN LATER MCC NOTIFIED. CORRECTIVE ACTION: R/R SLIDE PROX SWITCH 7WN1 PER AIRBUS AMM 52-73 AND ADJUSTMENT CHECK PER AIRBUS AMM 52-71. DOOR ARMING AND INDICATIONS CHECK NORMAL. MEL/PLAC RMVD. (7092468)

---
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.