# SDR YENA2026091100793

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 11, 2026
- Submitted: September 12, 2026
- Operation: Air carrier
- Aircraft: [N4062J](https://openairdocs.org/aircraft/N4062J), registered now
- Make and model: Airbus A321-271NX
- Registry model: [Airbus A321-271NX](https://openairdocs.org/model/airbus-s-a-s-a321-271nx) (OpenAirDocs)
- Aircraft serial: 10839
- Aircraft time: 16,538 hours, 2,461 cycles
- System (JASC): [3520 · Passenger Oxygen System](https://openairdocs.org/jasc/3520)
- Part: Oxygen Box
- Condition: No Test
- Location: Zone 200
- Stage of operation: IN
- How discovered: C
- Nature of condition: L
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/YENA2026091100793

## Discrepancy

DURING HEAVY MAINTENANCE, AFT CTR 02 BOX FAILED OPS TEST; (RESOLVED ON W/O: 1473121 TASKCARD: NR-00047 )  REF AAR WO 440624 NR 30769 TROUBLESHOOT AND REPAIRED AFT CENTER O2 BOX IAW AEROSPACE CMM 35-21-74. CRI ACCOMPLISHED ON NR 30823. OPS CHECK GOOD IAW AMM 35-23-00-710-001-A.

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