Service difficulty report · Battery Pack · Boeing 747446

Difficulty date
February 8, 2026
Submitted
April 4, 2026
Operation
Air carrier
Aircraft
N744CK
Make and model
Boeing 747446
Aircraft serial
26353
Aircraft time
124,256 hours, 22,635 cycles
Part
Battery Pack
Condition
No Test
Location
Zone 800
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

RIGHT UPPER DECK ESCAPE DOOR BATTERY PACK FAIL PUSH TO TEST LIGHT DURING A/C START UP