Service difficulty report · Battery Pack · Boeing 7377H4

Difficulty date
May 13, 2020
Submitted
May 26, 2020
Operation
Air carrier
Aircraft
N922WN
Make and model
Boeing 7377H4
Aircraft serial
32461
Aircraft time
41,140 hours, 24,679 cycles
Part
Battery Pack
Condition
Discharged
Location
Cabin
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

ALL EMERGENCY LIGHTS POWERED BY M1673 BATTERY PACK ARE INOP. REMOVED AND REPLACED EMERGENCY EXIT LIGHTS BATTERY PACK AND POWER SUPPLY M1673. INSTALLATION TEST CHECKS GOOD. IAW AMM 33-51-06-960-806 AND AMM 33-51-06-960-805.

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