Service difficulty report · Battery Pack · Boeing 7378H4

Difficulty date
May 17, 2026
Submitted
June 12, 2026
Operation
Air carrier
Aircraft
N8540V
Make and model
Boeing 7378H4
Aircraft serial
63598
Aircraft time
29,122 hours, 14,821 cycles
Part
Battery Pack
Condition
Inoperative
Location
Zone 200
Stage of operation
IN
How discovered
V
Nature of condition
O
Precautionary procedure
K

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

EMERGENCY EXIT LIGHTS OVER LEFT FWD AND AFT OVERWING EXITS INOPERATIVE. REMOVED AND REPLACED EMERGENCY LIGHT BATTERY PACK AT BS 659L IAW MM 33-51-06. EMERGENCY LIGHTS OPS CHECKED GOOD IAW MM 33-51-06.

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