Service difficulty report · Battery Pack · Boeing 7378H4

Difficulty date
August 31, 2023
Submitted
September 5, 2023
Operation
Air carrier
Aircraft
N8627B
Make and model
Boeing 7378H4
Aircraft serial
36895
Aircraft time
31,878 hours, 15,169 cycles
Part
Battery Pack
Part number
UNKNOWN
Condition
Faulty
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 INTERNAL AND EXTERNAL EMERGENCY LIGHTS INOP. T/S PER FIM<[01] PERFORMED FIM 33-50 TASK 801 EMERGENCY LIGHTING PROBLEM - FAULT ISOLATION FOR SEVERAL INTERNAL AND EXTERNAL EMERGENCY LIGHTS FOUND INOP. FOUND FAULTY BATTERY PACK ON POSITION M1671 AND M1695. REPLACED FAULTY BATTERY PACKS ON POSITIONS M1671 AND M1695 AND PERFORMED OPERATIONAL TEST AS PER REF AMM TASK 33-51-06-960-805. OPERATION TEST FOUND NORMAL.;[02] VERIFIED PERFORMED FIM 33-50 TASK 801 EMERGENCY LIGHTING PROBLEM - FAULT ISOLATION FOR SEVERAL INTERNAL AND EXTERNAL EMERGENCY LIGHTS FOUND INOP. FOUND FAULTY BATTERY PACK ON POSITION M1671 AND M1695. REPLACED FAULTY BATTERY PACKS ON POSITIONS M1671 AND M1695 AND PERFORMED OPERATIONAL TEST NORMAL.

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