Service difficulty report · Power Supply · Boeing 747481

Difficulty date
January 16, 2021
Submitted
January 20, 2021
Operation
Air carrier
Aircraft
N429MC
Make and model
Boeing 747481
Aircraft serial
24833
Aircraft time
106,484 hours, 16,008 cycles
Part
Power Supply
Part number
90083
Part serial
8822
Condition
Inoperative
Location
Emergency Lights
Stage of operation
IN
How discovered
9
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

UPPER DECK EMERGENCY LIGHT IS INOPERABLE. REMOVED AND REPLACED U/D POWER SUPPLY UNIT. OPERATINS CHECK U/D EMERGENCY LIGHT OK, PER AMM 33-51-04.