# SDR YENA2025072300755

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 22, 2025
- Submitted: July 23, 2025
- Operation: Air carrier
- Aircraft: [N2156J](https://openairdocs.org/aircraft/N2156J), 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: 11342
- Aircraft time: 8,198 hours, 1,496 cycles
- System (JASC): [4990 · APU Oil System](https://openairdocs.org/jasc/4990)
- Part: Switch
- Part number: 3043002
- Part serial: 98087
- Condition: Faulted
- Location: Oil System
- Part time: 5,007 hours, 2,681 cycles
- Stage of operation: NR
- How discovered: O
- Nature of condition: J
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/YENA2025072300755

## Discrepancy

FLT NR 1488, LAX-BOS. (ETOPS) APU AUTO SHUTDOWN (AUPSYSTEM A321NEO ETOPS); (RESOLVED ON W/O: 1427370 TASKCARD: NR-00004) REPLACED OIL PUMP DELTA P SWITCH IAW AMM 49-91-00 OPS & LEAKS CHECKS GOOD. ETOPS RESTRICTION STATUS REMOVED DUE TO NO FAULT REPORTED WITH APU MX4 UPDATED MCC NOTIFIED. PLACARD REMOVED.

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