What was found
AIRCRAFT WAS GROUNDED: 3L DOOR SHOWING OPEN. FLIGHT ATTENDANT SAYS IT IS CLOSED. MAINTENANCE REPLACED DOOR PROXIMITY DETECTOR SWITCH PER AMM 52-71-13 AND ACCOMPLISHED A SATISFACTORY OPERATIONAL CHECK.
- Difficulty date
- March 6, 2026
- Submitted
- March 9, 2026
- Operation
- Air carrier
- Aircraft
- N978UY
- Make and model
- Airbus A321231
- Aircraft serial
- 5422
- Aircraft time
- 40,645 hours, 16,727 cycles
- System (JASC)
- 5270 · Door Warning System
- Part
- Proximity Sensor
- Part number
- DHE1141
- Condition
- Faulty
- Location
- Zone 800
- Stage of operation
- NR
- How discovered
- O
- Nature of condition
- N
- Precautionary procedure
- O
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.