# SDR DALA2026011700400

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 16, 2026
- Submitted: January 18, 2026
- Operation: Air carrier
- Aircraft: [N538DN](https://openairdocs.org/aircraft/N538DN), 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: 11436
- Aircraft time: 10,938 hours, 2,661 cycles
- Engine: Iae PW1133GAJM
- System (JASC): [7261 · Turbine Engine Oil System](https://openairdocs.org/jasc/7261)
- Part: Packing
- Condition: Leaking
- Location: Lt Engine
- Stage of operation: CL
- How discovered: O
- Nature of condition: K, B
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/DALA2026011700400

## Discrepancy

AIR TURNBACK DUE TO DIRTY SOCK SMELL IN THE COCKPIT.   FOUND WETTING ON LEFT ENGINE. PLACED PACK ON MEL 21-52-01G, RE-ACTIVATED LEFT PACKFLOW CONTROL VALVE. REPLACED NBR 1 ENGINE.  (LP 7661108, 1405220, 7661114)

---
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.