What was found
BOTH L1 AND R1 EE LIGHT BATTERIES ARE DEAD. GROUNDED - YES. REMOVED AND REPLACED BOTH L1 AND R1 EE LIGHT BATTERIES, OPS CHECK GOOD IAW B737-800 AMM 33-51-06-960-805 STEPS 4.E (1-2) (4)(A,F)(5-6)(7)(A)(B)1)F.(1,4). (S/N 462625, 514985)
- Difficulty date
- September 25, 2025
- Submitted
- October 30, 2025
- Operation
- Air carrier
- Aircraft
- N525AS
- Make and model
- Boeing 737890
- Aircraft serial
- 35692
- Aircraft time
- 52,686 hours, 18,965 cycles
- System (JASC)
- 3350 · Emergency Lighting
- Part
- Battery
- Part number
- ADD71701100
- Condition
- Inoperative
- 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.