SDR UIEA0009

Service difficulty report · Harness · Boeing 74747UF

Difficulty date
March 9, 2000
Submitted
April 13, 2000
Operation
Air carrier
Aircraft
N408MC
Make and model
Boeing 74747UF
Aircraft serial
29261
Part
Harness
Condition
Damaged
Location
Oven
Part time
4,464 hours
Stage of operation
IN
How discovered
O
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

ON REMOVAL OF OVEN B/E AEROSPACE TYPE DF400PTC, FOUND CONNECTING POWER SUPPLY FLEX CABLE TEFLON SPIRAL WRAP MELTED DUE CONTACTING HOUSING OF HOT AIR CIRCULATING FAN. WIRE BUNDLE WAS PREVIOUSLY REPAIRED AS INDICATED BY WIRE SPLICES. BUNDLE IS APPROX 3 FT IN LENGTH WHICH IS REQUIRED SO OVEN CAN BE CONNECTED/DISCONNECTED AFTER SLIDING OUT OF OVEN COMPT C-4. ON SLIDING OVEN INTO COMPARTMENT, CABLE FREE STATE COMPRESSES AND ALLOWS CONTACT TO THE HOT AIR CIRCULATING FAN CASING CAUSING MELTING OF OUTER PROTECTIVE COVERINGS. THIS IS A BLIND AREA AND CANNOT BE CHECKED AFTER INSTALLATION. WIRES AND CASING REPAIRED AND NEW SPIRAL WRAP INSTALLED. (M)

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