What was found
(U43R) DURING SCHEDULED INSP, A&P MECHANIC FOUND THAT THE ALTERNATE AIR VALVE CONTROL LINE WAS LOOSE. FURTHER INSP FOUND THAT THE "EYE" BOLT HAD STRIPPED THE THREADS IN THE VALVE BODY HSG. THE BODY HSG IS MADE FROM ALUMINUM, THE "EYE" BOLT FROM STEEL. THE "EYE" BOLT CANNOT BE TIGHTENED COMPLETELY BECAUSE THE OPENING WILL FACE THE WRONG WAY, NOT ALLOWING INSTALLATION OF THE CONTROL CABLE. WITH THE VIBRATION FROM THE ENGINE, THIS CAUSES THE "EYE" BOLT TO WEAR ON/IN THE VALVE BODY HSG.