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."
| Incident date | October 20, 2025 |
|---|---|
| Airline | YENA |
| Flight | AMM49 |
| Aircraft | AIRBUS A321231 |
| Registration | N969JT |
| Affected area | Engine |
| Event type | Fumes or Odor |
| Verification | Official |
Sources
- FAA SDR: YENA fumes or odor report on 2025-10-20 (external.apic4e.faa.gov)
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