EASA AD 2019-0186: Rotors Flight Control - Main Rotor / Non-Rotating Scissor Link - Replacement

What to do

Operators of Hélicoptères Guimbal Cabri G2 helicopters with affected parts must replace the main rotor non-rotating scissor link with the serviceable part number G41-10-201 within 50 flight hours or 2 months from 13 August 2019, whichever occurs first. Installation of the affected part is prohibited after compliance or from the effective date for unaffected helicopters. Compliance can be credited if replacement was done previously following the specified service bulletin.

Summary

EASA Airworthiness Directive 2019-0186 is an airworthiness directive addressing the replacement of the main rotor non-rotating scissor link, part number G41-10-200, on Hélicoptères Guimbal Cabri G2 helicopters. This directive applies to all serial numbers of the Cabri G2 and mandates the replacement of affected parts with serviceable parts having part number G41-10-201. The directive aims to ensure continued safe flight control by mitigating risks associated with cracked rotor components.

What changed

This new airworthiness directive introduces a mandatory replacement of the main rotor non-rotating scissor link with an improved design that features reinforced lugs and plastic bushings instead of metal ones. It requires operators to replace affected parts within 50 flight hours or 2 months after the effective date. The directive also prohibits installation of the affected part on any helicopter after compliance or from the effective date for helicopters without the affected part installed.

Why it matters

This directive is critical for aviation professionals because it addresses a potential unsafe condition that could lead to failure of a key flight control component, potentially reducing helicopter control. Operators and maintenance organizations must comply to maintain airworthiness and ensure flight safety. Compliance teams need to track affected serial numbers and part numbers to avoid regulatory violations and operational risks.