Service difficulty report · Power Supply · Boeing 737890

Difficulty date
December 13, 2025
Submitted
December 18, 2025
Operation
Air carrier
Aircraft
N557AS
Make and model
Boeing 737890
Aircraft serial
35176
Aircraft time
70,079 hours, 20,914 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 M2335 POWER SUPPLY ARE INOP. GROUNDED - YES. REMOVED AND REPLACED EMERGENCY LIGHT POWER SUPPLY M2335 PER B737-800 AMM 33-51-06-960-806,INSTALLATION TEST GOOD.