Service difficulty report · Battery Pack · Boeing 7378H4

Difficulty date
July 3, 2023
Submitted
July 11, 2023
Operation
Air carrier
Aircraft
N8542Z
Make and model
Boeing 7378H4
Aircraft serial
63581
Aircraft time
19,477 hours, 9,654 cycles
Part
Battery Pack
Part number
UNKNOWN
Condition
Inoperative
Location
Zn 200 Fus Top
Stage of operation
IN
How discovered
9
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

SEVERAL EXTERIOR AND INTERIOR EMERGENCY LIGHTS INOPERATIVE.<[01] PERFORMED T/S AS PER WDM 33-51-14 AND FOUND DEFECTIVE BATTERY PACKS AT POSITIONS M1675; M2816; M2335; AND M1676. REPLACED EMERGENCY LICHTS BATTERY PACKS POSITIONS M1675; M2816; M2335; AND M1676. AS PER B737 AMM 33-51-06-960-805. TEST FOUND NORMAL;[02] VERIFIED PERFORMED T/S AND FOUND DEFECTIVE BATTERY PACKS AT POSITIONS M1675; M2816; M2335; AND M1676. REPLACED EMERGENCY LIGHTS BATTERY PACKS POSITIONS M1675; M2816; M2335; AND M1676. TEST FOUND NORMAL.

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