Summary
We are revising an earlier proposed airworthiness directive (AD) for all Saab AB, Saab Aerosystems Model 340B airplanes. The NPRM proposed to require an inspection of the stick pusher rigging and an adjustment to the correct setting if necessary. The NPRM was prompted by a report that the elevator position quoted in an aircraft maintenance manual is incorrect and a report that the trunnion at the lower part of the control column was installed incorrectly. This action revises the NPRM by proposing to require an inspection of the installation of the trunnion and the stick pusher rigging, and corrective actions if necessary. We are proposing this AD to correct the rigging of the elevator position of the stick pusher to reduce the probability of a negative effect on the handling quality during stall, which could result in reduced controllability of the airplane. Since these actions impose an additional burden over that proposed in the NPRM and at the request of a commenter, we arereopening the comment period to allow the public the chance to comment on these proposed changes.