Service difficulty report · Power Supply · Boeing 737990ER

Difficulty date
September 7, 2025
Submitted
September 10, 2025
Operation
Air carrier
Aircraft
N481AS
Make and model
Boeing 737990ER
Aircraft serial
44106
Aircraft time
37,117 hours, 11,501 cycles
Part
Power Supply
Part number
D71702001
Condition
Inoperative
Location
Zone 200
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 ASSOCIATED WITH POWER SUPPLY M2627 ARE INOP. GROUNDED - YES. REMOVED AND REPLACED EMERGENCY LIGHT POWER SUPPLY M2627 S/N 129605 INSTALLATION TEST GOOD IAW B737-900 AMM 33-51-06-960-806.