- Difficulty date
- October 24, 2023
- Submitted
- October 30, 2023
- Operation
- Air carrier
- Aircraft
- N411UA
- Make and model
- Airbus A320232
- Aircraft serial
- 464
- Aircraft time
- 92,146 hours, 36,036 cycles
- Part
- Epsu
- Part number
- AD321431
- Part serial
- 318266
- Condition
- Failed
- Location
- 13wl
- Stage of operation
- IN
- How discovered
- C
- Nature of condition
- L
- Precautionary procedure
- O
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CABIN LIGHTS EMERGENCY CAPACITY TEST FAILED. REPLACEMENT OF EPSU BATTERY 10WL IS REQUIRED. A3NB-33-3-6013 SEQ:633 ZONE:200 EPSU BATTERY 13WL FAILED ON EMERGENCY LIGHTING BATTERY CAPACITY TEST AND REQUIRE REPLACEMENT. PERFORMED EPSU BATTERY REPLACEMENT 13WL, IAW AMM: 33-51-38-400-002/ 33-51-3800-002 REV. 122 TEST SATIFACTORY.