Service difficulty report · Power Supply · Boeing 737990ER

Difficulty date
January 21, 2023
Submitted
February 4, 2023
Operation
Air carrier
Aircraft
N483AS
Make and model
Boeing 737990ER
Aircraft serial
36350
Aircraft time
27,291 hours, 8,585 cycles
Part
Power Supply
Part number
D71702001
Condition
Failed
Location
Main Passenger C
Stage of operation
IN
How discovered
9
Nature of condition
O
Precautionary procedure
K

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

LH ROW 7 EMERGENCY LIGHT POWER SUPPLY AT FLOOR LEVEL IS BAD. GROUNDED - YES. REPLACED POWER SUPPLY / BATTER L/H ROW 7 AT THE FLOOR OPS CHECK GOOD IAW B737-900 AMM 23-51-06-960-806 STEP E(4)(A) THRU (F).