Service difficulty report · Battery Pack · Boeing 7377BD

Difficulty date
March 27, 2023
Submitted
March 30, 2023
Operation
Air carrier
Aircraft
N556WN
Make and model
Boeing 7377BD
Aircraft serial
33936
Aircraft time
37,398 hours, 21,958 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

SEVERAL AISLE BIN LIGHTS ASSOCIATED WITH M1669 INOP AISLE LIGHTS AT STA600 RBL30 AND STA680 RBL30 INOP<[01] RELAMPED INOP AISLE LIGHTS AT STA600 RBL30 AND STA680 RBL30 IAW AMM 33-51-03-960-801; LIGHTS STILL INOP.;[02] VERIFIED CORRECTIVE ACTIONS STEP 1.;[03] REMOVED AND REPLACED BATTERY CHARGER AT M1669 AS PER AMM 33-51-06-960-806. CHARGER IS STILL BLOWING FUSES AND REQUIRES MORE TROUBLESHOOTING.;[04] VERIFIED CORRECTIVE ACTIONS STEP 3.;[05] PERFORMED GOOD CONTINUITY CHECK OF WIRES W4142-0215 AND W4142-0216 PER WDM 33-51-13.<BR><BR>MULTIMETER.<BR>ID: PER1281<BR>DUDE DATE: 01/31/2024;[06] CERTIFIED ITEM 5;[07] VERIFIED CORRECTIVE ACTION #5;[08] UPON FURTHER INVESTIGATION; FOUND AISLE LIGHT ASSEMBLIES AT STA 600 RBL 30 AND STA 660; RBL 30 DAMAGED. ASSEMBLIES CAUSING AN ELECTRICAL SHORT AND REQUIRE REPLACEMENT.;[09] REMOVED AND REPLACED EMERGENCY BIN LIGHT ASSEMBLIES AT STA 600 RBL 30 AND STA 660 RBL 30 AND PERFORMED SATISFACTORY INSTALLATION TEST PER AMM 33-51-03-960-802.;[10] COMPLETED STEPS 1 AND 2;[11] VERIFIED CORRECTIVE ACTION 8; 9 AND 10

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