What was found
AIRCRAFT IN BASE MAINTENANCE: EMERGENCY LIGHT SYSTEM TEST HAS FAULT EPSU (13WL) AFT L/DEU B (300RH7). REPLACED ESPU 13WL BATTERY PACK PER AMM 33-51-38.
- Difficulty date
- December 10, 2019
- Submitted
- December 13, 2019
- Operation
- Air carrier
- Aircraft
- N902AA
- Make and model
- Airbus A321231
- Aircraft serial
- 7519
- Aircraft time
- 8,940 hours, 3,422 cycles
- System (JASC)
- 3350 · Emergency Lighting
- Part
- Battery Pack
- Part number
- 321431
- Part serial
- 154411
- Condition
- Failed
- 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.