Service difficulty report · Battery Pack · Boeing 7378H4

Difficulty date
January 22, 2026
Submitted
February 6, 2026
Operation
Air carrier
Aircraft
N8637A
Make and model
Boeing 7378H4
Aircraft serial
42523
Aircraft time
39,415 hours, 19,104 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

FOUND BOTH OVERWING EMERGENCY EXIT LIGHT BATTERY PACKS FAILED AN OPS CHECK. REMOVED AND REPLACED EMERGENCY BATTERY PACKS M1694 AND M1695 IAW AMM 33-51-06-960-805.

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