Service difficulty report · Battery Pack · Boeing 7377H4

Difficulty date
March 9, 2024
Submitted
April 17, 2024
Operation
Air carrier
Aircraft
N463WN
Make and model
Boeing 7377H4
Aircraft serial
32467
Aircraft time
65,614 hours, 39,341 cycles
Part
Battery Pack
Part number
UNKNOWN
Condition
No Test
Location
Emergency Lights
Stage of operation
IN
How discovered
C
Nature of condition
L
Precautionary procedure
K

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

EMERGENCY LIGHTING BATTERY PACKS M1668; M1669; M1670; M1672; M1673; M1674 AND M1675 FAIL EMERGENCY LIGHTING CAPACITY CHECK.<[01] REMOVED AND REPLACED M1668; M1669; M1670; M1672; M1673; M1674 AND M1675 EMERGENCY LIGHTING BATTERY PACKS IAW AMM 33-51-06-960-805 STEP 4.E.(1)-(5);[02] VERIFIED REMOVAL AND REPLACEMENT OF M1668; M1669; M1670; M1672; M1673; M1674 AND M1675 EMERGENCY LIGHTING BATTERY PACKS IAW AMM 33-51-06-960-805 STEP 4.E.(1)-(5);[03] VERIFIED CORRECTIVE ACTION STEP 1.;[04] PERFORMED GOOD INSTALLATION TEST OF EMERGENCY LIGHTS PER STEP 1. TASK COMPLETED.;[05] CERTIFIED TASK CARD COMPLETED;[06] VERIFIED COMPLETION CORRECTIVE ACTION 4-5 AND MEASUREMENT TABLE.

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