# SDR F3LA202604090397

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 7, 2026
- Submitted: April 9, 2026
- Operation: Air carrier
- Aircraft: [N644FR](https://openairdocs.org/aircraft/N644FR), 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: 11794
- Aircraft time: 5,963 hours, 2,815 cycles
- Engine: Iae PW1133GAJM
- Engine time: 7,766 hours, 3,480 cycles
- System (JASC): [7200 · Engine (Turbine/Turboprop)](https://openairdocs.org/jasc/7200)
- Part: Seal
- Part number: 5312196
- Condition: Leaking
- Location: Nr 1 Engine
- Stage of operation: DE
- How discovered: O
- Nature of condition: K, B
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/F3LA202604090397

## Discrepancy

NR 1 FUME EVENT RETURNED UPON DECENT INTO DENVER, AC WAS GROUNDED.  NO CHANGE FROM PREVIOUS EXPERIENCES, PRIOR TO APU MEL. STRONG DIRTY SOCK ODOR.    PERFORMED INSPECTION OF APU IN REF TSM 05-50-00-810-831-A, NO ODORS OR SMELLS NOTED AT THIS TIME. DURING WALK AROUND DID NOTE ENG NR 1 SPINNER CONE LEAKING OIL. MX CONTINUED ON LP701407 #2. LP701407 ITEM #2 FOUND ENG #1 SPINNER CONE LEAKING OIL. PERFORMED REPLACEMENT OF THE #1 ENGINE FAN SHAFT COVER SEAL IN REF AMM 72-15-00-960-801-A. T/W F9TAB11302C DD 06/30.2026. IDLE TEST OK, NO LEAKS NOTED AT THIS TIME. A/C OK FOR SERVICE.

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