Airworthiness Directives; British Aerospace HP137 Mk1 and Jetstream Series 200 Airplanes

This amendment adopts a new airworthiness directive (AD) that applies to all British Aerospace HP137 Mk1 and Jetstream series 200 airplanes. This AD requires you to inspect the vertical stabilizer skin for disbonding, corrosion, cracks, and loose rivets, and repair any vertical stabilizer skin where discrepancies are found. This AD is the result of mandatory continuing airworthiness information (MCAI) issued by the airworthiness authority for the United Kingdom. The actions specified by this AD are intended to prevent failure of the vertical stabilizer caused by disbonding, corrosion, cracks, or loose rivets in the stabilizer skin. Such failure could lead to aircraft controllability problems.