# SDR DALA2025111808413

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 17, 2025
- Submitted: November 18, 2025
- Operation: Air carrier
- Aircraft: [N550DN](https://openairdocs.org/aircraft/N550DN), 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: 11734
- Aircraft time: 8,566 hours, 2,065 cycles
- Engine: Iae PW1133GAJM
- System (JASC): [7261 · Turbine Engine Oil System](https://openairdocs.org/jasc/7261)
- Part: Seal
- Condition: Leaking
- Location: Nr 1 Eng Spinner
- Stage of operation: IN
- How discovered: O
- Nature of condition: K, B
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/DALA2025111808413

## Discrepancy

FAS REPORTED SMOKE/FUMES "STRONG DIRTY SOCKS SMELL" ON APPROACH. FA'S REPORTED SMELL DISSIPATED SHORTLY AFTER LANDING.   FOUND OIL WETTING FROM BACK OF SPINNER ON #1 ENG. REPLACED #1 ENGINE FAN SHAFT COVER SEAL PER A321 AMM 72-15. LEAK CHECK GOOD AFTER ENGINE RUN. (LP 8139110)

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