Robinson R44 Raven I — Airworthiness Directives

This document is an Airworthiness Directive (AD) issued by the Civil Aviation Safety Authority (CASA) of Australia for the Robinson R44 Series Helicopters. It outlines mandatory actions required to address safety concerns related to the sprag clutch assembly in specific R44 models. The directive specifies the serial numbers of affected helicopters and mandates the examination and potential replacement of the sprag clutch to prevent failure, which could lead to loss of main rotor RPM. Compliance with the directive is required within a specified timeframe, ensuring that operators maintain the safety and airworthiness of their helicopters. The document serves as a critical reference for operators and maintenance personnel to ensure adherence to safety regulations.

• Affected serial numbers: R44 helicopters 0001-0541, 0543, 0550, 0556, 0565.
• Examine sprag clutch for serial number applicability.
• Replace sprag clutches with S/N 0003-0505 as per SB-32 procedures.
• Remove the pink page Special Pilot Caution regarding autorotation from the flight manual.
• Compliance required within 30 days or 50 hours time in service.