Service difficulty report · Battery Pack · Boeing 777323ER

Difficulty date
July 6, 2021
Submitted
July 8, 2021
Operation
Air carrier
Aircraft
N717AN
Make and model
Boeing 777323ER
Aircraft serial
31543
Aircraft time
32,599 hours, 3,772 cycles
Part
Battery Pack
Condition
No Test
Location
Emergency Light
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.

What was found

AIRCRAFT WAS NOT GROUNDED: ON CABIN WALK EMERGENCY LIGHTS TEST, DOOR 4L EMERGENCY EXIT SIGN INOPERATIVE. REPLACED POWER SUPPLY BATTERY PACK.