What was found
AIRCRAFT WAS NOT GROUNDED: EMERGENCY POWER SUPPLY UNIT BATTERY AT 12WL FAILED OPERATIONAL TEST OF EMERGENCY LIGHTS. REMOVED AND REPLACED EPSU BATTERY AT 12WL
- Difficulty date
- May 1, 2024
- Submitted
- May 2, 2024
- Operation
- Air carrier
- Aircraft
- N440AN
- Make and model
- Airbus A321253NX
- Aircraft serial
- 10643
- Aircraft time
- 10,040 hours, 2,667 cycles
- System (JASC)
- 3350 · Emergency Lighting
- Part
- Battery
- Part number
- 321431
- Condition
- No Test
- Location
- Emergency Lights
- Stage of operation
- IN
- How discovered
- C
- Nature of condition
- L
- Precautionary procedure
- K
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.