# SDR DALA2025090206520

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 1, 2025
- Submitted: September 3, 2025
- Operation: Air carrier
- Aircraft: [N347NW](https://openairdocs.org/aircraft/N347NW), registered now
- Make and model: Airbus A320-212
- Registry model: [Airbus A320-212](https://openairdocs.org/model/airbus-industrie-a320-212) (OpenAirDocs)
- Aircraft serial: 408
- Aircraft time: 95,085 hours, 44,353 cycles
- System (JASC): [3597 · Oxygen System Wiring](https://openairdocs.org/jasc/3597)
- Part: Wire Harness
- Condition: Damaged
- Location: Zone 200
- 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/DALA2025090206520

## Discrepancy

DURING MASK MANUAL DROP TEST FOUND ROW 27 ABC MASKS NOT DROPPING.  FOUND WIRE HARNESS F224270-507 DAMAGED.  R & R WIRE HARNESS F224270 -507 AT 27ABC REF AMM 25-25 AND CMM 25-25, AND  AWM 23- 73. OPS TEST GOOD. DROP TEST GOOD IAW AMM 35-23-00.  (LP: 7403315)

---
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.