Service difficulty report · Battery · Boeing 737*

Difficulty date
September 27, 2021
Submitted
November 4, 2021
Operation
Air carrier
Aircraft
N557WN
Make and model
Boeing 737*
Aircraft serial
30166
Aircraft time
66,485 hours, 32,340 cycles
Part
Battery
Condition
Failed
Location
Cabin
Stage of operation
UK
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

M1670 EMERGENCY LIGHT BATTERY FAILED CAPACITY TEST ; / [01] REMOVED AIR RETURN GRILL AT STA 727C+13 LBL 68 PER CMM 25-23-01 PARA. 1.2 AND REMOVED M1670 EMERGENCY BATTERY AND REPLACED WITH SERVICEABLE BATTERY PER AMM 33-51-06-960-805 STEP 4.D.(1)-(5); [02] VERIFIED CORRECTIVE ACTIONS STEP 1.; [03] OK TO CLOSE GIVEN.; [04] REINSTALLED AIR RETURN GRILL AT STA 727C+13 LBL 68 PER CMM 25-23-01 PARA. 1.3 AND PERFORMED GOOD INSTALLATION TEST OF M1670 EMERGENCY BATTERY PER AMM 33-51-06-960-805 STEP 4.D.(6); [05] VERIFIED CORRECTIVE ACTION STATEMENT 4