What was found
L4 DOOR, M33407 EMER LIGHT BATTERY CAPACITY CHECK FAILED. THE BATTERY WAS REPLACED AND TESTED NORMAL IAW AMM 33-51-06.
- Difficulty date
- May 6, 2026
- Submitted
- May 7, 2026
- Operation
- Air carrier
- Aircraft
- N78013
- Make and model
- Boeing 777224
- Aircraft serial
- 29861
- Aircraft time
- 124,573 hours, 12,900 cycles
- System (JASC)
- 3300 · Lighting System
- Part
- Battery
- Part number
- D71701100
- Condition
- No Test
- Location
- Zone 200
- 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.