FLT 2104, BOS-BOS. IMMEDIATALLY AFTER TAKE OFF, THE FLIGHT SMELLED ABNORMAL FUMES. CONTACTED DX MTC TO DISCUSS, MTC ADVISES TO SWITCH PACKS ON – OFF TO ISOLATE. DETERMINED IT WAS FROM PACK 2. AIR RETURN DUE TO ETOPS RESTRICTION, COMPLIED WITH INGO NOTICE 2017-T015L, PILOT DID NOT SUBMIT SMART SHEET. TREATED ODOR EVENT AS A CLASS 3 & PERFORMED LEVEL C DECON OF ECS SYSTEM W ENGINE BLEED. APU WAS USED FOR SECOND DECON. PER AMM 21-00-00-615-804-A OP TO SUBTASK 21-00-00-860132-C.), CONTINUED TO RUN BOTH PACKS AFTER REINSTALLATION OF DUCTING BETWEEN CONDESOR AND CHECK VALVE FOR PACK 1 AND 2 WITH APCU BLEED & ENG 2 BLEED PER AMM 21-00-00-615-804-A—NO ODOR PRESENT THROUGHOUT CABIN AND COCKPIT AT THIS TIME.
| Incident date | August 25, 2025 |
|---|---|
| Airline | YENA |
| Flight | FLT2104 |
| Aircraft | AIRBUS A321271NX |
| Registration | N2142J |
| Affected area | Cockpit |
| Event type | Fumes or Odor |
| Verification | Official |
Sources
- FAA SDR: YENA fumes or odor report on 2025-08-25 (external.apic4e.faa.gov)
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