Action
Supplemental notice of proposed rulemaking (NPRM); reopening of comment period.
Summary
We are revising an earlier proposed airworthiness directive (AD) for certain Hawker Beechcraft Corporation (HBC) Models 58, 58TC, 58P, 95C55, E55, and 56TC airplanes. That NPRM proposed requiring inspections of elevator balance weights and replacement of defective elevator balance weights. That NPRM was prompted by reports of elevator balance weights becoming loose or failing because the balance weight material was under strength and did not meet material specifications. This action revises that NPRM to prohibit the installation of designated spare parts and to clarify applicability. We are proposing this supplemental NPRM to correct the unsafe condition on these products. Since these actions impose an additional burden over that proposed in the NPRM, we are reopening the comment period to allow the public the chance to comment on these proposed changes.