# SDR YENA2026061900485

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 18, 2026
- Submitted: June 19, 2026
- Operation: Air carrier
- Aircraft: [N2157J](https://openairdocs.org/aircraft/N2157J), 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: 11397
- Aircraft time: 11,191 hours, 2,073 cycles
- System (JASC): [2150 · Cabin Cooling System](https://openairdocs.org/jasc/2150)
- Part: Sensor
- Part number: 9105A000502
- Part serial: 43181
- Condition: Faulted
- Location: Zone 100
- Part time: 1,721 hours, 332 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/YENA2026061900485

## Discrepancy

FLT  1178, LAS-BOS. (ETOPS) AIR PACK 1 REGULATOR FAULT.   R & R PACK TEMP SENSOR (12HH) IAW AMM 21-63-11. OPS CHECK GOOD. MX-4 UPDATED. PLACARD REMOVED.

---
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.