EASA 2020-0224-E (Emergency)

Requires repetitive inspections of the tail rotor blades for leading-edge protection shield debonding and, depending on findings, replacement with serviceable parts. It also prohibits installation or reinstallation of affected parts. Prompted by two recent reported occurrences of debonding of tail rotor blade leading edge protection shields. The design and assembly procedure of the affected part is such that rapid debonding can occur if humidity/liquid water reaches the bonding surface between leading edge and blade spar, EASA said.