What was found
EMERGENCY BATTERY PACK AT 15 DEF FAILED CAPACITY CHECK. R & R THE BATTERY PACK M1669 AT 15 DEF IAW AMM 33-51-06.
- Difficulty date
- February 20, 2026
- Submitted
- February 23, 2026
- Operation
- Air carrier
- Aircraft
- N439WN
- Make and model
- Boeing 7377H4
- Aircraft serial
- 29834
- Aircraft time
- 74,436 hours, 44,598 cycles
- System (JASC)
- 3350 · Emergency Lighting
- Part
- Battery Pack
- Condition
- Failed
- Location
- Zone 200
- Stage of operation
- IN
- How discovered
- V
- Nature of condition
- O
- Precautionary procedure
- K
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.