Service difficulty report · Power Supply · Boeing 747446F

Difficulty date
August 6, 2025
Submitted
September 21, 2025
Operation
Air carrier
Aircraft
N936CA
Make and model
Boeing 747446F
Aircraft serial
25308
Aircraft time
91,315 hours, 18,170 cycles
Part
Power Supply
Part number
90084
Part serial
917
Condition
No Test
Location
Zone 200
Part time
91,315 hours, 18,170 cycles
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

DURING HEAVY CHECK C AT KSAT FOUND ON UPPER DECK RH DOOR EMERGENCY TEST FAIL (EMERGENCY S W 51541) ,LOW BATTERY VOLTAGE.