# SDR F3LA202606100424

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 5, 2026
- Submitted: June 16, 2026
- Operation: Air carrier
- Aircraft: [N641FR](https://openairdocs.org/aircraft/N641FR), 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: 11887
- Aircraft time: 6,553 hours, 3,053 cycles
- Engine: Iae PW1133GAJM
- Engine time: 6,554 hours, 3,054 cycles
- System (JASC): [7261 · Turbine Engine Oil System](https://openairdocs.org/jasc/7261)
- Part: Engine
- Condition: Leaking
- Location: Nr 1
- 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/F3LA202606100424

## Discrepancy

FUME EVENT DESCENDING THRU 17,000 - 18,000 DIRTY SOCK SMELL DETECTED THEN DISAPPEARED. RETURNED AT 10,560 FEET MUCH STRONGER DIRTY SOCK SMELL. CHECKLIST PROCEDURE CALLED FOR PACK 1 OFF. UNKNOWN IF ODOR PERSISTED DUE TO OXYGEN USE TO GATE.  COMPLIED WITH W/O 603333 NR 1 ENGINE REMOVED AND REPLACED IAW TASK CARDS MP71042-05 AND MP71042-06. AC RETURNED TO SERVICE.  ORIGINAL SUBMISSION DATE: 06/10/2026

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