Service difficulty report · Battery Pack · Boeing 7377H4

Difficulty date
February 22, 2021
Submitted
February 26, 2021
Operation
Air carrier
Aircraft
N959WN
Make and model
Boeing 7377H4
Aircraft serial
36674
Aircraft time
32,118 hours, 19,511 cycles
Part
Battery Pack
Condition
Failed
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

3 EACH CABIN EMERGENCY LIGHTING BATTERY PACKS FAIL CAPACITY TEST. / REMOVED AND REPLACED 3 EACH CABIN EMERGENCY LIGHTING BATTERY PACKS AT LOCATIONS M1670; M1672; AND M1673 PER AMM 33-51-06 AND ENG DWG 33500005.

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