What was found
AIRCRAFT WAS GROUNDED: EMERGENCY BATTERY M33652 DOES NOT OPERATE ALL EMERGENCY LIGHTS. REMOVED AND REPLACED EMERGENCY LIGHT BATTERY PACK AT LOCATION M33652 IAW B777 AMM 33-51-06 AND B777 SSM 33-51-13.
- Difficulty date
- February 14, 2021
- Submitted
- February 16, 2021
- Operation
- Air carrier
- Aircraft
- N731AN
- Make and model
- Boeing 777323ER
- Aircraft serial
- 33523
- Aircraft time
- 25,378 hours, 2,802 cycles
- System (JASC)
- 3350 · Emergency Lighting
- Part
- Battery
- 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.