Summary
This document proposes to adopt a new airworthiness directive (AD) that would apply to all Short Brothers and Harland Ltd. (Shorts) Models SC-7 Series 2 and SC-7 Series 3 airplanes. This proposed AD would establish a technical service life for these airplanes and allow you to incorporate modifications, inspections, and replacements of certain life limited items to extend the life limits of these airplanes. This proposed AD is the result of mandatory continuing airworthiness information (MCAI) issued by the airworthiness authority for the United Kingdom. The actions specified by this proposed AD are intended to prevent fatigue failure of critical structure of the aircraft. Such failure could result in reduced structural integrity of the aircraft with consequent failure of the primary structural components and possibly result in structural failure during flight.