Service difficulty report · Power Supply · Boeing 7377H4

Difficulty date
July 24, 2021
Submitted
July 30, 2021
Operation
Air carrier
Aircraft
N751SW
Make and model
Boeing 7377H4
Aircraft serial
29803
Aircraft time
74,739 hours, 44,231 cycles
Part
Power Supply
Condition
Faulty
Location
Emergency Lights
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

FWD EMERGENCY LIGHTS (2 ON LT; CENTER SIGN AND L1 DOOR EXIT SIGN) LIGHT UP FOR ABOUT 30 SECONDS AND THEN TURN OFF. ; / [01] T/S FORWARD EMERGENCY LIGHT ISSUES AND FOUND EMERGENCY POWER SUPPLY AND BATTERY PACK AT POSITION M1675 (FWD ENTRY CEILING PANEL) INOPERATIVE AS PER REF B737 SSM 33-51-12.; [02] VERIFIED STEP 1.; [03] REMOVED AND REPLACED BATTERY PACK AND CHARGER ASSY AS PER B737 AMM 33-51-06-960-805 AND 33-51-06-960-806. PERFORMED OPS CHECK; TEST OK.<BR><BR>AAR TAG WN6140 FOR CHARGER ASSY<BR>AAR TAG A05071 FOR BATTERY PACK; [04] VERIFIED STEP 3

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