Summary
We propose to adopt a new airworthiness directive (AD) for Eurocopter France (Eurocopter) Model EC120B and EC130B4 helicopters with certain emergency flotation gear (float) installed. This proposed AD would require inspecting the float for chafing of the fabric covering and adding protectors to the float installation to prevent contact between the float and the protruding sections of the installation. This proposed AD is prompted by a report of a float that would not inflate during overhaul because one of the float compartments was punctured due to chafing. The proposed actions are intended to prevent failure of float and subsequent loss of control of the helicopter during an emergency water landing.