Summary
We propose to adopt a new airworthiness directive (AD) for certain Cessna Aircraft Company (Cessna), Models 172, 182, and 206 series airplanes. This proposed AD would require you to remove the seats, modify the seat base/back attach brackets, and reinstall the seats of all the crew seats of the affected airplanes and seats 3 and 4 on Model 206 series airplanes. This proposed AD results from reports of the seat base/back attach bracket failing where it is welded to the seat base. We are proposing this AD to prevent failure of the seat base/back attach brackets, which could result in the seats collapsing backwards during flight with consequent loss of control.