What was found
4 EMERGENCY LIGHT BATTERIES FAILED 15 MINUTE TIMER CHECK. GROUNDED - YES. REMOVED AND INSTALLED SERVICEABLE EMERG LIGHT BATTERIES S/N 420477, 408193, 407875 AND 420479. OP CHECKS GOOD IAW B737-900 AMMM 33-51-06-960-805.
- Difficulty date
- May 22, 2025
- Submitted
- June 30, 2025
- Operation
- Air carrier
- Aircraft
- N492AS
- Make and model
- Boeing 737990ER
- Aircraft serial
- 44110
- Aircraft time
- 35,515 hours, 11,001 cycles
- System (JASC)
- 3350 · Emergency Lighting
- Part
- Battery Pack
- Part number
- ADD71701100
- 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.