- Difficulty date
- July 29, 2025
- Submitted
- September 5, 2025
- Operation
- Air carrier
- Make and model
- Boeing 7478F
- Aircraft serial
- 64253
- Aircraft time
- 30,518 hours, 4,442 cycles
- Part
- Battery
- Part number
- 20131A
- Part serial
- 498295
- Condition
- Malfunctioned
- 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.
What was found
REMOVE EMERGENCY LIGHT BATTERY 3 EA FOR PREVENT BATTERY DISCHARGER. IAW AMM 33-51-04-900-803 REV.48, REPLACED EMERGENCY LIGHT BATTERY M5170. IAW AMM 33-51-04-900-803 REV.48 PERFORMED EMERGENCY LIGHT BATTERY INSTALLATION TEST, RESULT WAS SATISFACTORY.