What was found
AIRCRAFT NOT GROUNDED: MAINTENANCE REPORTS EPSU SYSTEM TEST BATTERY AND EPSU (11WL) EXTERIOR LIGHT FAULT. REMOVED AND REPLACED EMERGENCY POWER SUPPLY UNIT BATTERY AT 11WL POSITION. TEST OK IAW AMM 33-51-38.
- Difficulty date
- October 1, 2019
- Submitted
- October 3, 2019
- Operation
- Air carrier
- Aircraft
- N998AN
- Make and model
- Airbus A321231
- Aircraft serial
- 7509
- Aircraft time
- 9,230 hours, 3,464 cycles
- System (JASC)
- 3350 · Emergency Lighting
- Part
- Battery Pack
- Part number
- AD321431
- Part serial
- 802632
- Condition
- Inoperative
- 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.