- Difficulty date
- October 11, 2021
- Submitted
- October 12, 2021
- Operation
- Air carrier
- Make and model
- Boeing 737890
- Aircraft serial
- 35180
- Aircraft time
- 54,274 hours, 16,039 cycles
- Part
- Battery
- Part number
- ADD71701100
- Condition
- None
- Location
- Aft Cabin Ceilin
- Stage of operation
- IN
- How discovered
- C
- 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
DURING PERFORMING EMERGENCY BATTERY PACK CAPACITY FUNCTIONAL CHECK TASK CARD 78233001 FOUND AFT EMERGENCY SIGN AND L2 DOOR LIGHTS OFF. GROUNDED - YES. REPLACED EMERGENCY LIGHT BAT PACK AT AFT GALLEY CEILING PANEL LEFT SIDE- REF B737-800 MM 33-51-06-960-805. OPS NML.