Service difficulty report · Cable · Cessna 172S

Difficulty date
July 22, 2009
Submitted
July 22, 2009
Operation
General aviation
Aircraft
N394ER
Make and model
Cessna 172S
Aircraft serial
172S10330
Aircraft time
2,196 hours
Part
Cable
Part number
0510105360
Condition
Frayed
Location
Lt Aileron
Part time
2,196 hours
Stage of operation
IN
How discovered
W
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 INSP THE LT AILERON CABLE (PN-0510105-360) WAS FOUND WORN AND FRAYED WHERE IT CONTACTS THE NYLON PULLEY IN THE CEILING AT FS 65.33. PULLEYS ROTATE FREELY, HOWEVER, CABLE DOESN'T PROVIDE ENOUGH "TRACTION" TO ROTATE IT WHEN THE AILERON CONTROL IS MOVED FROM STOP TO STOP. THIS RESULTS IN CABLE SLIPPING AGAINST THE PULLEY AND EVENTUALLY WEARING THROUGH THE STRANDS. AREA WITH BROKEN STRANDS APPEAR ONLY AS A SHINY CABLE AND THERE ARE NO OBVIOUS BROKEN STRANDS. IT MUST BE VIEWED WITH A POWERFUL MAGNIFYING GLASS AND BRIGHT LIGHT. IN MANY CASES THE NUMBER OF BROKEN STRANDS FAR EXCEED THE AMOUNT SHOWN IN EITHER MM OR AC 43.13.

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