Service difficulty report · Battery Pack · Boeing 777212

Difficulty date
February 17, 2026
Submitted
February 19, 2026
Operation
Air carrier
Aircraft
N771KW
Make and model
Boeing 777212
Aircraft serial
28530
Aircraft time
55,020 hours, 13,341 cycles
Part
Battery Pack
Part number
D71702001
Part serial
3651
Condition
No Test
Location
Zone 200
Part time
250 hours, 50 cycles
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

BOTH BATTERY PACKS FAILED A CAPACITY TEST. R & R INSTALLED OVERHEAD UNITS, OPS CHECKED GOOD.