Service difficulty report · Battery Pack · Boeing 7378H4

Difficulty date
October 6, 2023
Submitted
October 19, 2023
Operation
Air carrier
Aircraft
N8674B
Make and model
Boeing 7378H4
Aircraft serial
36734
Aircraft time
26,522 hours, 12,730 cycles
Part
Battery Pack
Part number
UNKNOWN
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 EMERGENCY BULLNOSE LIGHTS INOP IN CABIN.<[01] REPLACED 4 BATTERY PACKS. 2 FWD LEFT AND RIGHT AND 2 AFT LEFT AND RIGHT. OPS CHECK GOOD. REF AMM 33-51-06.;[02] REPLACED 4 BATTERY PACKS. 2 FWD LEFT AND RIGHT AND 2 AFT LEFT AND RIGHT. OPS CHECK GOOD. REF AMM 33-51-06.;[03] CORRECTIVE ACTIONS 1 AND 2 ENTERED IN ERROR. INCORRECT SIGN OFF.;[04] REPLACED 4 BATTERY PACKS. 2 FWD LEFT AND RIGHT AND 2 AFT LEFT AND RIGHT. REF AMM 33-51-06.;[05] VERIFIED SIGNOFF 1&2 CLOSED IN ERROR. CORRECTIVE ACTIONS 1 AND 2 ENTERED IN ERROR. INCORRECT SIGN OFF.<BR>REPLACED 4 BATTERY PACKS. 2 FWD LEFT AND RIGHT AND 2 AFT LEFT AND RIGHT. REF AMM 33-51-06.C/W INSPECTION;[06] REMOVED AND REPLACED 5 EACH EMERGENCY LIGHT BATTERY PACKS PER MM 33-51-06. OPS CHECKS GOOD PER MM 33-51-00;[07] INSPECTED WORK PERFORMED. SEE STEPS AND C/A?S FOR ALL WORK PERFORMED. REMOVED AND REPLACED 5 EACH EMERGENCY LIGHT BATTERY PACKS PER MM 33-51-06. OPS CHECKS GOOD PER MM 33-51-00

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