Robinson R22 — Airworthiness Directives

This document is an Airworthiness Directive (AD) issued by the Civil Aviation Safety Authority of Australia, specifically addressing the Robinson R22 series helicopters. It outlines mandatory requirements for the replacement of certain flexplates to ensure the safety and airworthiness of the aircraft. The directive is applicable to all R22 series helicopters equipped with specific part numbers of flexplates that have been identified as having potential failure risks. The document emphasizes the importance of compliance within a specified timeframe to mitigate the risk of accidents due to flexplate failures, which have been linked to previous incidents. This AD serves as a critical safety measure for operators and maintenance personnel of the Robinson R22.

• All R22 series helicopters with flexplates P/N A193-1 or A947-1 Rev A thru D must comply.
• Replace affected flexplates with P/N A947-1 E or F as per SB75.
• Compliance is required within 25 hours TIS or by 31 July 1998, whichever comes first.
• The directive was issued due to previous flexplate failures leading to accidents.
• This amendment is the second update to the original directive issued in 1994.