Service difficulty report · Battery Pack · Boeing 737990ER

Difficulty date
November 29, 2020
Submitted
December 1, 2020
Operation
Air carrier
Aircraft
N433AS
Make and model
Boeing 737990ER
Aircraft serial
41704
Aircraft time
27,135 hours, 8,668 cycles
Part
Battery Pack
Part number
ADD71701100
Condition
Discharged
Location
Emergency Lights
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

DURING ACCOMPLISHMENT OF T/C 78233008 EMERGENCY LIGHTS, OPERATIONS CHECK FOUND FWD RT R1 DOOR EMERGENCY LIGHT INOPERABLE, FWD MOST ABOVE AISLE, EMERGENCY LIGHT INOPERABLE AND R-1 DOOR ESCAPE SLIDE EMERGENCY LIGHT INOPERABLE. GROUNDED-YES. REMOVED & REPLACED FWD EMERGENCY LIGHT BATTERY PACK, PER B737-900 AMM 33-51-06-960-805 AND B737-900 WDM 33-51-12, FWD RT R1 DOOR, FWD AISLE AND R1 SLIDE EMERGENCY LIGHTS. OPERATIONS CHECK GOOD.