Summary
We propose to adopt a new airworthiness directive (AD) for the specified helicopters. This proposed AD results from a mandatory continuing airworthiness information (MCAI) AD originated by an aviation authority of another country to identify and correct an unsafe condition on an aviation product. The European Aviation Safety Agency (EASA), the Technical Agent for Italy, with which we have a bilateral agreement, states in the MCAI:
Some cases of interference between the hydraulic pipe, P/N 109- 0761-65-103, and the tail rotor control rod assembly have been detected on Model A109E helicopters. The interference, if not corrected, could damage the hydraulic pipes and lead to the loss of the hydraulic system No. 1 in flight. This AD * * * is issued to extend the same mandatory corrective actions to A119 model due to its design similarity with A109E.
The proposed AD would require actions that are intended to address this unsafe condition.