Service difficulty report · Cooling Fan · Boeing 757224

Difficulty date
August 20, 2025
Submitted
August 22, 2025
Operation
Air carrier
Aircraft
N67134
Make and model
Boeing 757224
Aircraft serial
29283
Aircraft time
96,151 hours, 20,815 cycles
Part
Cooling Fan
Part number
731376A
Part serial
2328
Condition
Faulted
Location
Zone 100
Part time
69,296 hours, 18,166 cycles
Stage of operation
IN
How discovered
O
Nature of condition
B
Precautionary procedure
K

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

What was found

EQUIP COOLING OVERHEAT LIGHT ON SWITCH STATUS MSG EQPT CLG FAN, FOUND CB FWD EQUIP COOLING SUPPLY FAN TRIPPED ,PUSHED BRAKER TRIPPED AGAIN .ALTN SWITCH WORKS OK. TRIPPING CB, MULTIPLE SYSTEMS ON C-B AND AN ELECTRICAL ODOR IN FLIGHT DECK UNLOCKED FOR SIGN OFF. REMOVED AND REPLACED EQUIP. COOLING FAN #1 REF AMM 21-58-06-414-007, SYS OPS CHK GOOD, NO MSGS