Summary
This document proposes to adopt a new airworthiness directive (AD) that would apply to all Aerostar Aircraft Corporation (Aerostar) Models PA-60-600, PA-60-601, PA-60-601P, PA-60-602P and PA-60-700P airplanes. The proposed AD would require you to replace both of the existing main landing gear lower side brace assemblies with parts of improved design. The proposed AD is the result of several reports of cracking of the main landing gear lower side brace at the upper bolt lug discovered on preflight inspection. The actions specified by the proposed AD are intended to correct damage or cracks in the main landing gear lower side brace at the upper bolt lug where the upper and lower side braces connect. This could result in cracking and failure of the main landing gear lower side brace. Such failure could lead to loss of control of the airplane.