Service difficulty report · Battery · Boeing 7377H4

Difficulty date
July 13, 2022
Submitted
July 18, 2022
Operation
Air carrier
Aircraft
N448WN
Make and model
Boeing 7377H4
Aircraft serial
33721
Aircraft time
61,091 hours, 36,211 cycles
Part
Battery
Part number
M1667
Condition
Failed
Location
Pax Cabin
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

EMERGENCY LIGHT BATTERIES FAILED CAPACITY TEST AT LOCATIONS M1667; M1673; M1670 EMERGENCY LIGHT BATTERIES FAILED CAPACITY TEST AT LOCATIONS M1667 M1673 M1670 / [01] R&R EMERGENCY LIGHT BATTERIES AT M1670 & M1673 PER AMM 33-51-06 OPC CK GOOD PERFORMED CAPACITY TEST AGAIN PER AMM 33-51-06-200-801 TEST PASSED. ALL BATTERIES PASSED TEST M1667 REPLACEMENT NOT REQUIRED.

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