Service difficulty report · Power Supply · Boeing 737990ER

Difficulty date
December 20, 2023
Submitted
February 1, 2024
Operation
Air carrier
Aircraft
N407AS
Make and model
Boeing 737990ER
Aircraft serial
41731
Aircraft time
41,970 hours, 13,088 cycles
Part
Power Supply
Part number
D71702001
Condition
Inoperative
Location
Emergency Lights
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 AT 25DEF AND 29DEF ARE INOP. GROUNDED - YES. REMOVED AND REPLACED POWER SUPPLY M2627 AND PERFORMED GOOD INSTALLATION TEST PER B737-900ER AMM 33-51-06-960-806, NO DEFECTS NOTED EMERGENCY LIGHTS AT 25DEF AND 29DEF OPERATION NORMAL.