Service difficulty report · Battery Pack · Boeing 777323ER

Difficulty date
October 9, 2026
Submitted
October 13, 2026
Operation
Air carrier
Aircraft
N728AN
Make and model
Boeing 777323ER
Aircraft serial
31553
Aircraft time
51,796 hours, 5,992 cycles
Part
Battery Pack
Condition
No Test
Location
Zone 200
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: DURING J/C 72C20033099 FUNCTIONAL CHECK EMERGENCY LIGHT BATTERY PACKS FOUND ROW 11G-15G EMERGENCY LIGHT INOPERATIVE. MAINTENANCE REMOVED AND REPLACED EMERGENCY LIGHT BATTERY PACK IAW AMM 33-51-06. OPS TEST GOOD ROW 11G-15G OPERATED NORMAL.