What was found
AIRCRAFT WAS NOT GROUNDED: DOOR 4L WHEN ARMED SHOWS AMBER AND REFLECTS CHECK DOOR PRESSURE. MAINTENANCE SERVICED DOOR 4L DAMPER AND EMERGENCY OPERATION CYLINDER PER AMM 52-10-00,
- Difficulty date
- April 9, 2026
- Submitted
- April 10, 2026
- Operation
- Air carrier
- Aircraft
- N557UW
- Make and model
- Airbus A321231
- Aircraft serial
- 5269
- Aircraft time
- 43,002 hours, 17,707 cycles
- System (JASC)
- 5270 · Door Warning System
- Part
- Cylinder
- Condition
- Low Pressure
- Location
- Zone 800
- Stage of operation
- NR
- How discovered
- V
- Nature of condition
- J
- Precautionary procedure
- K
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.