What was found
THE AFT EMERGENCY LIGHT POWER SUPPLY BATTERY PACK (M33401) AT THE DOOR 4R FOUND LOW CAPACITY. REPLACED THE AFT EMERGENCY LIGHT POWER SUPPLY BATTERY PACK, TESTED NORMAL IAW AMM 33-51-06-960-802, REV.106.
- Difficulty date
- February 14, 2026
- Submitted
- February 16, 2026
- Operation
- Air carrier
- Aircraft
- N2639U
- Make and model
- Boeing 777300ER
- Aircraft serial
- 62650
- Aircraft time
- 37,657 hours, 4,130 cycles
- System (JASC)
- 3350 · Emergency Lighting
- Part
- Battery Pack
- Part number
- D71701100
- Condition
- Discharged
- 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.