What was found
AIRCRAFT WAS NOT GROUNDED: UPON PERFORMING OPERATIONAL CHECK OF EMERGENCY LIGHTS MCDU TEST REPORTED FAULT BATTERY/EMERGENCY POWER SUPPLY UNIT (12WL) EXTERNAL RIGHT. REMOVED AND REPLACED 12WL EMERGENCY POWER SUPPLY UNIT BATTERY.
- Difficulty date
- November 3, 2023
- Submitted
- November 6, 2023
- Operation
- Air carrier
- Aircraft
- N573UW
- Make and model
- Airbus A320*
- Aircraft serial
- 5939
- Aircraft time
- 30,972 hours, 12,463 cycles
- System (JASC)
- 3350 · Emergency Lighting
- Part
- Battery
- Part number
- AD321431
- Condition
- Faulty
- Location
- Zone 200 - Fuse
- Stage of operation
- IN
- How discovered
- C
- Nature of condition
- O
- Precautionary procedure
- K
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.