What was found
EMERGENCY LIGHT BATTERY PACK (M5057)CAPACITY TEST FAILED.(<P>EMERGENCY LIGHT BATTERY PACK (M5057) REPLACED. INSTALLATION TEST NORMAL AMM 33-51-12.</P>)
- Difficulty date
- April 2, 2020
- Submitted
- April 2, 2020
- Operation
- Air carrier
- Aircraft
- N464MC
- Make and model
- Boeing 747446
- Aircraft serial
- 26341
- Aircraft time
- 100,863 hours, 18,901 cycles
- System (JASC)
- 3350 · Emergency Lighting
- Part
- Battery Pack
- Part number
- 20131A
- Part serial
- 106059
- Condition
- Discharged
- Location
- Cabin
- Stage of operation
- IN
- How discovered
- C
- Nature of condition
- L
- Precautionary procedure
- K
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.