Service difficulty report · Battery Pack · Boeing 7378

Difficulty date
July 24, 2023
Submitted
August 16, 2023
Operation
Air carrier
Aircraft
N8708Q
Make and model
Boeing 7378
Aircraft serial
42566
Aircraft time
12,787 hours, 5,693 cycles
Part
Battery Pack
Part number
UNKNOWN
Condition
Inoperative
Location
Zn 100 Fus Lower
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

(A204 DOT 5) PASSENGER CABIN. EMERGENCY WHITE LIGHT IS INOP IN COVE CEILING PANELS AT SEAT 15CB; AND 23ABC<[01] DURING TROUBLESHOOTING OF EMERGENCY WHITE AISLE LIGHT AT SEAT 15CB AND 23 ABC FOUND BAD POWER SUPPLY AT STA 727C +13 WL212 LBL68 (M1670) IAW WDM 33-51-13 PAGE 101 SHEET 1.;[02] REMOVED BATTERY PACK IN POWER SUPPLY M1670 IAW AMM 33-51-06-960-802 STEP 4D.(1) UP TO (4).;[03] REMOVED POWER SUPPLY IN M1670 IAW AMM 33-51-06-960-806 STEP 5E.1 UP TO 4.(A)(B)(C).;[04] OK TO INSTALL POWER SUPPLY;[05] INSTALLED NEW POWER SUPPLY AND BATTERY PACK IN M1670 IAW AMM 33-51-06-960-806 STEP 5E.4.(D)(E)(F) AND AMM 33-51-06-960-802 STEP 4D.(5). PENDING FOR OPS CHECK. <BR><BR>A-TAG# WN33102<BR>A-TAG# WN33252;[06] STEP 5 C/W;[07] ACCOMPLISHED OPS CHECKS OF AISLE LIGHTS 15CB AND 23ABC IAW AMM'S 33-51-06-960-802 AND 33-51-06-960-802 OPS CHECKS GOOD;[08] REMOVED POWER SUPPLY IN M1670 IAW AMM 33-51-06-960-803 STEP 5E.1 UP TO 4.(A)(B)(C)(D);[09] INSTALLED NEW POWER SUPPLY AND BATTERY PACK IN M1670 IAW AMM 33-51-06-960-803 STEP 5E.4.(D)(E)(F) AND AMM 33-51-06-960-802 STEP 4D.(5). PENDING FOR OPS CHECK.;[10] ACCOMPLISHED OPS CHECKS OF AISLE LIGHTS 15CB AND 23ABC IAW AMM'S 33-51-06-960-802 AND 33-51-06-960-803 OPS CHECKS GOOD;[11] VERIFIED STEP 7-10<BR>AUDIT C/W;[12] JOB COMPLETE<BR>AUDIT C/W;[13] JOB COMPLETE<BR>AUDIT C/W

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