- Difficulty date
- December 16, 2025
- Submitted
- December 19, 2025
- Operation
- Air carrier
- Make and model
- Airbus A321271NX
- Aircraft serial
- 11872
- Aircraft time
- 5,847 hours, 2,376 cycles
- Part
- Ecs
- Condition
- Contaminated
- Location
- Zone 100
- Stage of operation
- DE
- How discovered
- O
- Nature of condition
- B
- Precautionary procedure
- O
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
STRONG SOCK ODOR DURING TAKEOFF. PACK 1 REMOVED, ODOR DESCRIPTION OF ODOR/FUMES: PERSISTENT, HYDRAULIC & MUSTY DRY ODOR. APPARENT CABIN SOURCE: CABIN AIR SUPPLY VENTS. FLIGHT DECK & FWD CABIN. NO VISIBLE SMOKE/HAZE. NO MEDICAL ATTENTION REQURIED. R & R CABIN RECIRCULATION FILTER CARTRIDGES IAW AMM 21-21-41. PERFORMED LEVEL A DECONTAMINATION OF (ECS) IAW AMM 21-00-00-615-802-A. OPS CHKS GOOD. NO ODORS FOUND.