Service difficulty report · Battery Pack · Boeing 7378H4

Difficulty date
November 1, 2025
Submitted
November 13, 2025
Operation
Air carrier
Aircraft
N8509U
Make and model
Boeing 7378H4
Aircraft serial
36925
Aircraft time
29,987 hours, 14,936 cycles
Part
Battery Pack
Condition
Inoperative
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

OVERWING FORWARD L/H AND R/H EMERGENCY ESCAPE HATCH LIGHTS INOPERATIVE. REMOVED AND REPLACED THE EMERGANCY LIGHT BATTERY PACK ON THE LT SIDE. OPS CHECKED GOOD IAW AMM 33-51-06.

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