SDR 030926C

Service difficulty report · Wire Harness · Cessna 550

Difficulty date
September 25, 2003
Submitted
September 26, 2003
Operation
General aviation
Aircraft
N1200N
Make and model
Cessna 550
Aircraft serial
5500681
Aircraft time
5,658 hours, 3,906 cycles
Engine
Pwa JT15D4
Part
Wire Harness
Part number
1C712
Part serial
9AF169
Condition
Chafed
Location
Fuel Pump
Stage of operation
IN
How discovered
V
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

DURING INTERNAL INSPECTION OF THE FUEL BAYS FOUND FUEL PUMP WIRING HARNESSES IN RIGHT WING WAS DAMAGED BY CHAFFING THROUGH THE WIRING INSULATION TO BEAR WIRE. WIRING WAS CHAFFING AGAINST ALUMINUM FUEL LINE INSIDE TANK. CHAFFING CAUSED WEAR BEYOND LIMITS TO ALUMINUM FUEL LINE. LEFT WING FUEL PUMP HARNESS WAS NOT CHAFFING AGAINST ANY STRUCTURE OR TUBING.

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