Service difficulty report · Control Unit · Boeing 777232LR

Difficulty date
May 26, 2018
Submitted
May 31, 2018
Operation
Air carrier
Aircraft
N705DN
Make and model
Boeing 777232LR
Aircraft serial
29742
Aircraft time
47,271 hours, 4,189 cycles
Part
Control Unit
Condition
Malfunctioned
Location
Cooling Fan
Stage of operation
TO
How discovered
O
Nature of condition
B
Precautionary procedure
C

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

What was found

RECEIVED AN EQUIP COOLING OVERHEAT EICAS DURING TAKEOFF ALONG WITH A FAINT ODOR. COMPLETED CHECKLIST AND EICAS LIGHT OUT. AFTER CHECKLIST COMPLETE, HAD STATUS MESSAGE EQUIP COOLING FAN R ON FOR REST OF FLIGHT. REPLACED COOLING FAN & CONTROLLER , CONNECTOR DB21582 . FOUND EXISTING FAULT MESSAGE 21-14024. RT EQUIP COOLING SUPPLY FAN. R & R THE ELCU IAW MM 24-51.