Service difficulty report · Battery Pack · Boeing 737990ER

Difficulty date
March 4, 2026
Submitted
March 10, 2026
Operation
Air carrier
Aircraft
N494AS
Make and model
Boeing 737990ER
Aircraft serial
41729
Aircraft time
36,972 hours, 11,237 cycles
Part
Battery Pack
Part number
ADD71701100
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.

What was found

EMERGENCY LIGHTS OUT ON THE FOLLOWING: R/H OVERWING EXIT, ROWS 8L, 11L, CABIN CEILING EXIT LIGHT. GROUNDED - YES. REMOVED AND REPLACED EMERGENCY LIGHT BATTERY S/N 411270 AT ROW 7LH, OPS CHECK GOOD IAW B737-900 AMM 33-51-06-960-805.