- 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
M1674 EMERGENCY LIGHT BATTERY FAILED CAPACITY TEST ; / [01] REMOVED M1674 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] PERFORMED GOOD INSTALLATION TEST OF M1674 EMERGENCY BATTERY PER AMM 33-51-06-960-805 STEP 4.D.(6); [04] VERIFIED CORRECTIVE ACTION #3