# SDR YENA2025102101048

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 20, 2025
- Submitted: October 21, 2025
- Operation: Air carrier
- Aircraft: [N969JT](https://openairdocs.org/aircraft/N969JT), registered now
- Make and model: Airbus A321-231
- Registry model: [Airbus A321-231](https://openairdocs.org/model/airbus-a321-231) (OpenAirDocs)
- Aircraft serial: 07353
- Aircraft time: 38,113 hours, 7,494 cycles
- Engine: Iae V2533A5
- System (JASC): [7321 · Fuel Control/Turbine Engines](https://openairdocs.org/jasc/7321)
- Part: Fcu
- Part number: 4419215
- Part serial: CUC18408
- Condition: Leaking
- Location: Engine
- Part time: 16,698 hours, 9,530 cycles
- 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/YENA2025102101048

## Discrepancy

FLT#734, SFO-BOS. "OIL FUME EVENT RECOGNIZED BY PILOTS, INTERMITTENT THROUGHOUT DESCENT FROM 10,000 FT TO THE GROUND. UNABLE TO ISOLATE/IDENTIFY SOURCE. F/A'S DID NOT RECOGNIZE ODOR; C/W INFO NOTICE 2017-T015 SECTION B2, FOUND SOURCE TO BE APU TYPE 1, FOUND FCU LEAKING, REMOVED AND REPLACED FCU IAW AMM 49-32-11, OPS CHECKS GOOD, PERFORMED ECS LEVEL A DECON IAW AMM 21-00-00-615-B02-A NO ODOR PRESENT AT THIS TIME."

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