Summary
This document proposes the adoption of a new airworthiness directive (AD) that is applicable to certain British Aerospace (Jetstream) Model 4101 airplanes. This proposal would require inspection of certain components, and corrective action, if necessary. This action is necessary to prevent loosening of the locknut holding the main landing gear (MLG) piston to the ramrod, which could result in detachment of the MLG piston from the ramrod and loss of hydraulic control of the MLG. This action is intended to address the identified unsafe condition.