Stems From A Fatigue Crack Found In The Lower Main Wing Spar Cap On A Piper Model PA-28R-201
The FAA last month proposed an AD for multiple Piper models after receiving a report of a fatigue crack found in the lower main wing spar cap on a Piper Model PA-28R-201 airplane. An investigation revealed that repeated high-load operating conditions accelerated the fatigue crack growth in the lower main wing spar cap. In addition, because of the structural configuration of the wing assembly, the cracked area was inaccessible for a visual inspection. Model PA-28-140, PA-28-150, PA-28-151, PA-28-160, PA-28-161, PA-28-180, PA-28-181, PA-28-235, PA-28R-180, PA-28R-200, PA-28R-201T, PA-28RT-201, PA-28RT-201T, PA-32-260, and PA-32-300 airplanes have similar wing spar structures as the