# SDR DALA2025101207444

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 11, 2025
- Submitted: October 12, 2025
- Operation: Air carrier
- Aircraft: [N548DN](https://openairdocs.org/aircraft/N548DN), 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: 11620
- Aircraft time: 7,786 hours, 1,835 cycles
- Engine: Iae PW1133GAJM
- System (JASC): [7261 · Turbine Engine Oil System](https://openairdocs.org/jasc/7261)
- Part: Oil System
- Condition: Overserviced
- Location: Zone400
- Stage of operation: IN
- How discovered: O
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/DALA2025101207444

## Discrepancy

VERY MILD DIRTY SOCK SMELL ON ARRIVAL DESCENDING THROUGH HEAVY CLOUDS / MOISTURE.   FOUND BOTH ENGINES OVERSERVICED. REMOVED EXCESS OIL. FOUND LIGHT OIL WETTING ON NBR 1 ENGINE. REPLACED FAN SHAFT COVER O-RING REF A321AMM 72-15. RAN BOTH ENGS. NO SMELL NOTED. NO OTHER EVIDENCE OF OIL LEAKAGE. (LP 7860782)

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