What was found
AIRCRAFT IN BASE MAINTENANCE - L3 DOOR, EPSU (EMERGENCY POWER SUPPLY UNIT) M33406 BATTERY WILL NOT CHARGE. REMOVED AND REPLACED BATTERY PACK, EPSU M33406, PER AMM TASK 33-51-06-960-802, OPERATIONAL CHECK GOOD.
- Difficulty date
- September 2, 2020
- Submitted
- September 7, 2020
- Operation
- Air carrier
- Aircraft
- N791AN
- Make and model
- Boeing 777223
- Aircraft serial
- 30254
- Aircraft time
- 78,388 hours, 10,034 cycles
- System (JASC)
- 3350 · Emergency Lighting
- Part
- Battery Pack
- Part number
- ADD71701100
- Part serial
- 151802
- Condition
- Discharged
- 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.