Summary
This document proposes the adoption of a new airworthiness directive (AD) that is applicable to certain Boeing Model 737-200, - 300, -400, and -500 series airplanes. This proposal would require replacement of existing door handle mounting hub assemblies with new, improved hub assemblies. This proposal is prompted by reports of cracked or broken mounting hub assemblies for the interior door handles on the cabin doors. The actions specified by the proposed AD are intended to prevent cracking or breaking of the door handle mounting hub, which could result in the interior door handle breaking off while the door is being opened. In an emergency situation, this could impede evacuation of the airplane.