Service difficulty report · Cooling Fan · Boeing 74745EF

Difficulty date
March 3, 2026
Submitted
March 4, 2026
Operation
Air carrier
Aircraft
N486MC
Make and model
Boeing 74745EF
Aircraft serial
30608
Aircraft time
109,433 hours, 19,451 cycles
Part
Cooling Fan
Part number
4100149C
Part serial
1275A
Condition
Failed
Location
Zone 100
Stage of operation
NR
How discovered
O
Nature of condition
J, B
Precautionary procedure
O

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

E/E COOLING SUPPLY FAN STATUS MSG, ACCOMPANIED WITH ELECTRICAL BURNING ODOR IN THE FLT DECK. R & R THE E/E COOLING SUPPLY FAN IAW AMM 21-58-01 & IPC 21-58-01-01, ITEM 200. E & E COOLING GROUND TEST PASSED IAW AMM 21-58-00.

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