What was found
AIRCRAFT WAS GROUNDED: WET, HUMID DIRTY SOCK SMELL IN FLIGHT DECK ON DESCENT IN MSP. FLIGHT CREW SUSPECTS DIRTY AIR FILTERS IN AIR CONDITIONING PACKS. REMOVED AND REPLACED APU IAW JC26L31049003.
- Difficulty date
- March 22, 2021
- Submitted
- March 23, 2021
- Operation
- Air carrier
- Aircraft
- N557UW
- Make and model
- Airbus A321231
- Aircraft serial
- 5269
- Aircraft time
- 27,692 hours, 10,943 cycles
- System (JASC)
- 4900 · Airborne Auxiliary Power Unit (APU) System
- Part
- Apu
- Part number
- 38007081WGEN
- Part serial
- P3515
- Condition
- Odor
- Part time
- 38,621 hours, 18,812 cycles
- 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.