Service difficulty report · Power Supply · Boeing 737990ER

Difficulty date
April 12, 2023
Submitted
April 17, 2023
Operation
Air carrier
Aircraft
N478AS
Make and model
Boeing 737990ER
Aircraft serial
44105
Aircraft time
28,561 hours, 9,020 cycles
Part
Power Supply
Part number
D71702001
Condition
Inoperative
Location
Main Passenger C
Stage of operation
IN
How discovered
V
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

EMERGENCY LIGHTS COMMON TO POWER SUPPLY M1675 ARE INOP. GROUNDED - YES. REMOVED AND REPLACED EMERGENCY LIGHT POWER SUPPLY M1675 & INSTALLATION TEST GOOD IAW B737-900 AMM 33-51-06 OP CHECK GOODPO 1057542-1.