Service difficulty report · Power Supply · Boeing 737990ER

Difficulty date
July 21, 2020
Submitted
July 22, 2020
Operation
Air carrier
Aircraft
N419AS
Make and model
Boeing 737990ER
Aircraft serial
41734
Aircraft time
27,729 hours, 8,919 cycles
Part
Power Supply
Part number
D71702001
Condition
Inoperative
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

EMERGENCY LIGHTS COMMON TO POWER SUPPLY M1672 WERE INOPERATIVE. GROUNDED - YES. REMOVED AND REPLACED EMERGENCY LIGHT POWER SUPPLY M1672 IAW AMM 33-51-06-960-806. INSTALLATION TEST GOOD.