Summary
This document revises an earlier proposed airworthiness directive (AD), applicable to all EMBRAER Model EMB-120 series airplanes, that would have required revising the airplane flight manual to include operational limitations for use of the autopilot, and installing two placards that advise the flight crew to check the pitch trim before descent. This new action would retain the original requirements, but with revised placard language. This new action would also require modifying the elevator trim system, which would terminate the requirements of the AD. The actions specified by this new proposed AD are intended to prevent pitch trim upsets if the pitch trim actuators jam or freeze, which could result in reduced controllability of the airplane. This action is intended to address the identified unsafe condition.