Summary
This document proposes adopting a new airworthiness directive (AD) for Bell Helicopter Textron, A Division of Textron Canada (BHT) Model 206A, 206A-1, 206B, 206B-1, 206L, 206L-1, 206L-3, and 206L-4 helicopters. This proposal would require performing a continuity test, and repairing temporarily any unairworthy chip detector, and replacing any repaired chip detectors. This proposal is prompted by reports of poor or no continuity between the insert and the chip detector housing on certain chip detectors. The actions specified by this proposed AD are intended to prevent failure of a chip detector indication, loss of a critical component, and subsequent loss of control of the helicopter.