{"id":"F2008L00720","name":"AD/R44/18 Amdt 1 - Main Rotor Blades - CANCELLED","slug":"ad-r44-18-amdt-1-main-rotor-blades-cancelled","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":72757,"registerId":"commonwealth-F2008L00720-current","compilationNumber":null,"startDate":"2026-04-02","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"Robinson R44 Series Helicopters","sectionType":"division","heading":"Robinson R44 Series Helicopters","content":"### Robinson R44 Series Helicopters\n\n| AD/R44/18 Amdt 1 | Main Rotor Blades | 4/2008 |\n| ---------------- | ----------------- | ------ |\n\n| Requirement: | CANCELLED.                                                                                                                                                                                                                                               |\n| ------------ | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |\n|              | This AD is cancelled on 10 April 2008.                                                                                                                                                                                                                   |\n| Background:  | AD/R44/22, latest amendment, supersedes this Airworthiness Directive.The FAA recently released an Airworthiness Directive to mandate a once off “tap test” and daily repeat inspection of the blades for leading edge skin separation. AD/R44/22 refers. |\n\n![](image.001.png)\n\nDavid Villiers  \nDelegate of the Civil Aviation Safety Authority\n\n18 February 2008","sortOrder":0},{"sectionNumber":"AD/R44/18 Amdt 1","sectionType":"part","heading":"AD/R44/18 Amdt 1","content":"## AD/R44/18 Amdt 1","sortOrder":1},{"sectionNumber":"Main Rotor Blades","sectionType":"part","heading":"Main Rotor Blades","content":"## Main Rotor Blades","sortOrder":2},{"sectionNumber":"4/2008","sectionType":"part","heading":"4/2008","content":"## 4/2008","sortOrder":3}],"analysis":{"kimi_summary":{"_metrics":{"model":"kimi-k2.5","source":"moonshot-batch","completionTokens":1459},"content_quality":"ok","complexity_score":1,"scope_assessment":{"changed":false,"description":"The instrument performs exactly its limited stated purpose: formally revoking a superseded Airworthiness Directive. It does not expand, narrow, or alter the underlying regulatory scheme beyond cancelling the specific outdated directive and redirecting operators to its replacement."},"complexity_factors":["Single, unambiguous operative provision (cancellation)","No defined terms or interpretation section","Only one cross-reference (to the superseding AD/R44/22)","Extremely brief (four sentences of substance)","No conditional logic, exceptions, or procedural steps to apply"],"plain_english_summary":"**This document cancels a previous helicopter safety inspection rule.**\n\nIt tells owners and operators of **Robinson R44 helicopters** that an earlier safety rule about **main rotor blades** is no longer in force.\n\n**What it does:**\n- Officially cancels the previous rule (AD/R44/18) as of 10 April 2008\n- Tells aviation maintenance crews to stop using this old directive\n- Directs them to follow the newer replacement rule (AD/R44/22) instead\n\n**Why it matters:**\nThe cancelled rule previously required specific inspections to check for dangerous defects like separation of the blade's leading edge skin. Because the Civil Aviation Safety Authority issued a newer, updated version of this safety requirement, this old version is now obsolete and must not be followed."}},"importantCases":[],"_links":{"self":"/api/acts/ad-r44-18-amdt-1-main-rotor-blades-cancelled","history":"/api/acts/ad-r44-18-amdt-1-main-rotor-blades-cancelled/history","analysis":"/api/acts/ad-r44-18-amdt-1-main-rotor-blades-cancelled/analysis","conflicts":"/api/acts/ad-r44-18-amdt-1-main-rotor-blades-cancelled/conflicts","importantCases":"/api/acts/ad-r44-18-amdt-1-main-rotor-blades-cancelled/important-cases","documents":"/api/acts/ad-r44-18-amdt-1-main-rotor-blades-cancelled/documents"}}