What was found
LEFT AILERON DIRECT CONTROL CABLE SEPARATED IN FLIGHT RESULTING IN A FATAL ACCIDENT. THE CABLE P/N 0510105-224 WAS VERY BADLY RUSTED AT THE POINT OF FAILURE LOCATED ABOVE THE RIGHT DOORPOST WHERE THE CONTROL CABLE RIDES OVER A PULLEY. THE PULLEY IN THIS AREA WAS VERY STIFF DUE TO A BADLY CORRODED BEARING. THIS APPEARS TO BE A RESULT OF POOR INSPECTION PROCEDURES. THE DOORPOST TRIM MUST BE REMOVER AND THE HEADLINER MUST BE OPENED TO PROPERLY INSPECT THIS AREA. IT IS A REQUIREMENT OF THE ANNUAL INSPECTION TO INSPECT THE FLIGHT CONTROL SYSTEMS, THE ENTIRE SYSTEM, NOT JUST THE EASY PART. THINK TWICE BEFORE YOU SIGN OFF YOUR NEXT INSPECTION.