Service difficulty report · Battery Pack · Boeing 777323ER

Difficulty date
February 3, 2020
Submitted
February 4, 2020
Operation
Air carrier
Aircraft
N731AN
Make and model
Boeing 777323ER
Aircraft serial
33523
Aircraft time
24,088 hours, 2,625 cycles
Part
Battery Pack
Part number
D71702001
Part serial
119274
Condition
Inoperative
Location
Emergency Lights
Stage of operation
IN
How discovered
9
Nature of condition
O
Precautionary procedure
K

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

AIRCRAFT WAS GROUNDED: EMERGENCY LIGHTS WERE FLASHING ON AND OFF IN FLIGHT, LAST 6 ROWS ON THE RIGHT SIDE. MAINTENANCE REPLACED M33409 BATTERY PACK PER AMM 33-51-06.