Service difficulty report · Battery Pack · Boeing 7378H4

Difficulty date
November 5, 2024
Submitted
November 14, 2024
Operation
Air carrier
Aircraft
N8510E
Make and model
Boeing 7378H4
Aircraft serial
36944
Aircraft time
26,582 hours, 13,221 cycles
Part
Battery Pack
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

MULTIPLE EMERGENCY LIGHTS ASSOCIATED WITH BATTERY PACK M1672 INOP<[01] DOCUMENTATION OF TROUBLESHOOTING FOR EMERGENCY LIGHTS ASSOCIATED WITH BATTERY PACK M1672; FOUND R/H AFT SLIDE LIGHT (L733) AND R/H AFT GALLEY EXIT INDICATOR LIGHT (L1191) TO BE INOP.<BR><BR>RELAMPED L733 AND PERFORMED OPERATIONAL TEST PER AMM 33-51-04-960-801; LIGHT L733 STILL INOP<BR><BR>SWAPPED EMERGENCY BATTERY PACK M1672 WITH EMERGENCY BATTERY PACK M1673 AND PERFORMED OPERATIONAL TEST PER AMM 33-51-06-960-805; BOTH L733 AND L1191 STILL INOP; RETURNED EMERGENCY BATTERY PACKS M1672 AND M1673 TO ORIGINAL POSITIONS PER AMM 33-51-06-960-805<BR><BR>SWAPPED EMERGENCY BATTERY PACK CHARGER M1672 WITH EMERGENCY BATTERY PACK CHARGER M1673 AND PERFORMED OPERATIONAL TEST PER AMM 33-51-06-960-806; BOTH L733 AND L1191 STILL INOP; RETURNED EMERGENCY BATTERY PACK CHARGERS M1672 AND M1673 TO ORIGINAL POSITIONS PER AMM 33-51-06-960-806<BR><BR>PERFORMED GROUND CHECK OF PINS 10 AND 11 OF CONNECTOR D10744 OF M1672 PER WDM 33-51-14 AND WDM 33-51-22; FOUND OPEN GROUND L733 AND L1191.<BR>FUTHER INVESTIGATION FOUND WIRES W4142-0412-20; W4142-0444-16 CUT; REPAIRED WIRES PER SWPM 20-30-12; PERFORMED GOOD TEST OF EMERGENCY LIGHTS L733 AND L1191 PER AMM 33-51-04-960-801.<BR>SPLICE CRIMPERS ID PER2412 DUE DATE 02/2025.<BR>TASK CARD COMPLETED;[02] VERIFIED CORRECTIVE ACTION COMPLETE.

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