Summary
This document proposes the adoption of a new airworthiness directive (AD) that is applicable to certain Jetstream Model 4101 airplanes. This proposal would require an inspection to determine if a travel stop (screw) is installed at the flight control assembly, and various follow-on actions. This proposal is prompted by a report of failure of the travel stop, which allowed the elevator and aileron disconnect handles to rotate within the housing due to migration of the travel stop from its position. The actions specified by the proposed AD are intended to prevent such migration, which could result in the elevator and aileron disconnect system resetting without the use of the reset button; this condition could lead to jamming of the disconnect handles.