What was found
AIRCRAFT WAS GROUNDED. L4 DOOR EMERGENCY POWER ASSIST SYSTEM BATTERY ASSEMBLY GREEN LIGHT DOES NOT FLASH GREEN WHEN ARMED. REMOVED AND REPLACED DOOR 4L BACKUP BATTERIES, PER AMM 52-11-20. GREEN LIGHT FLASHES WHEN ARMED.
- Difficulty date
- September 22, 2020
- Submitted
- September 23, 2020
- Operation
- Air carrier
- Aircraft
- N759AN
- Make and model
- Boeing 777223
- Aircraft serial
- 32638
- Aircraft time
- 72,766 hours, 9,229 cycles
- System (JASC)
- 2560 · Emergency Equipment
- Part
- Battery
- Part number
- MN1604
- Condition
- Inoperative
- Location
- Door Assist
- Stage of operation
- IN
- How discovered
- V
- Nature of condition
- O
- Precautionary procedure
- K
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.