Robinson R44 — Airworthiness Directives

This document is an Airworthiness Directive (AD) issued by the Civil Aviation Safety Authority of Australia, specifically addressing the Robinson R44 Series Helicopters. It outlines a critical safety requirement regarding the oil line elbows used in these helicopters. The directive mandates the replacement of specific aluminum elbows with steel alternatives to prevent potential engine failure due to oil loss. The document is intended for operators and maintenance personnel of the R44 helicopters, ensuring compliance with safety standards and maintaining airworthiness. The directive includes details on the applicability, compliance timeline, and background information regarding the safety issue.

• Applies to all Robinson R44 helicopters, serial numbers 0001 through 0330.
• Aluminum elbows must be replaced with steel elbows to prevent engine failure.
• Compliance must be completed within 50 hours of service after the directive's effective date.
• The directive is effective from 21 May 1998.
• Background reports indicate cracking of aluminum elbows leading to oil loss.