Transport Canada 2020-21

Requires a one-time special detailed inspection of the Safran Aerosystems emergency flotation system (EFS) to verify that there is no blockage through the EFS supply hoses and, replacement, as required, of the affected supply hoses. This AD also prohibits affected EFS supply hoses from being used as replacement parts. Prompted by a maintenance check of an EFS where the third compartment of the left forward float did not inflate. An investigation revealed that the supply hose for the gas flow from the pressurized cylinder to the float compartment was blocked because of a manufacturing defect.