Summary
We propose to supersede airworthiness directive (AD) 2010-21- 07 for Eurocopter France (now Airbus Helicopters) Model AS350B3 and EC130B4 helicopters. AD 2010-21-07 currently requires inspecting the pilot's and co-pilot's throttle twist for proper operation of the contactors. This proposed AD would retain the requirements of AD 2010- 21-07, include additional inspection procedures, and revise the inspection interval. These proposed actions are intended to prevent unintended touchdown during a practice autorotation at a flight-idle power setting, damage to the helicopter, and injury to occupants.