What was found
AIRCRAFT WAS GROUNDED: AIR CONDITIONING FUMES BELOW 10,000' ON TAKEOFF AND LANDING. TAKEOFF WAS ON APU BLEED, LANDING ON LONG IDLE DESCENT. MAINTENANCE FOUND THE APU FREEZE PLUG LEAKING OIL. (OPEN)
- Difficulty date
- May 30, 2025
- Submitted
- June 2, 2025
- Operation
- Air carrier
- Aircraft
- N535UW
- Make and model
- Airbus A321231
- Aircraft serial
- 3993
- Aircraft time
- 53,313 hours, 20,155 cycles
- System (JASC)
- 4990 · APU Oil System
- Part
- Oil System
- Condition
- Leaking
- Location
- Apu
- Component
- Apu · Hnywl
- Component part number
- 38007081
- Stage of operation
- CL
- How discovered
- O
- Nature of condition
- K, B
- Precautionary procedure
- O
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.