AD/R22/4 Amdt 7 - Retirement Lives - Fatigue Critical Components - CANCELLED

What this is: A cancellation of an aviation safety rule (Airworthiness Directive) for Robinson R22 helicopters.

What it used to do: Previously, this rule required helicopter owners to retire (replace) specific parts—such as rotor blades and critical structural components—after they reached a set number of flight hours or takeoff/landing cycles. This prevented accidents caused by metal fatigue (wear and tear from repeated stress). The replacement schedules were those specified in the aircraft's maintenance manual.

Why it matters now: The directive was cancelled because it duplicated requirements already found in the Civil Aviation Orders (Section 100.5). The safety standards still apply to these helicopters, but they are now governed by the general regulation rather than this specific directive.