{"id":"F2009L01307","name":"AD/R22/42 - Main Rotor Blades - CANCELLED","slug":"ad-r22-42-main-rotor-blades-cancelled","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":122271,"registerId":"commonwealth-F2009L01307-current","compilationNumber":null,"startDate":"2026-04-03","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"Robinson R22 Series Helicopters","sectionType":"division","heading":"Robinson R22 Series Helicopters","content":"### Robinson R22 Series Helicopters\n\n| AD/R22/42 | Main Rotor Blades | 5/2009 |\n| --------- | ----------------- | ------ |\n\n| Requirement: | CANCELLED.                                                                                                                                                                                                                                                                                                                       |\n| ------------ | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |\n|              | This AD is cancelled on 7 May 2009.                                                                                                                                                                                                                                                                                              |\n| Background:  | This unique Australian AD specified verification that the installed main rotor blades were the same as installed by Robinson at manufacture or overhaul, or were replacement blades purchased from Robinson or an approved Service Centre. Compliance was required by June 1996. The AD was made redundant in 2005 by AD/R22/53. |\n\n![](image.001.png)\n\nDavid Villiers  \nDelegate of the Civil Aviation Safety Authority\n\n17 March 2009","sortOrder":0},{"sectionNumber":"AD/R22/42","sectionType":"part","heading":"AD/R22/42","content":"## AD/R22/42","sortOrder":1},{"sectionNumber":"Main Rotor Blades","sectionType":"part","heading":"Main Rotor Blades","content":"## Main Rotor Blades","sortOrder":2},{"sectionNumber":"5/2009","sectionType":"part","heading":"5/2009","content":"## 5/2009","sortOrder":3}],"analysis":{"kimi_summary":{"_metrics":{"model":"kimi-k2.5","source":"moonshot-batch","completionTokens":2399},"content_quality":"ok","complexity_score":1,"scope_assessment":{"changed":true,"description":"The original AD imposed active compliance obligations on operators to verify and document rotor blade provenance. This version eliminates those requirements entirely, converting the instrument from a regulatory mandate into a deregulatory cancellation notice."},"complexity_factors":["Single operative provision (cancellation)","No defined terms or interpretation section","No conditional logic, exceptions, or procedural steps","Minimal cross-referencing (only cites the superseding AD/R22/53)","Extremely short length (one substantive sentence of regulation)"],"plain_english_summary":"**What this does:** This document formally cancels an old aviation safety rule (Airworthiness Directive AD/R22/42) that applied to Robinson R22 helicopters. The original rule required owners to verify their main rotor blades were genuine parts from the manufacturer or an approved service centre.\n\n**Why it matters:** The cancellation removes a redundant legal compliance obligation. The safety requirement became obsolete in 2005 when a newer, updated rule (AD/R22/53) took effect. From 7 May 2009, operators no longer need to separately prove blade compliance under this specific cancelled directive.\n\n**Key details:**\n* **Original requirement (1996):** Operators had to confirm installed blades matched factory specifications or were purchased directly from Robinson Helicopter Company or an approved service centre.\n* **Current status:** Cancelled effective 7 May 2009.\n* **Reason for cancellation:** The rule was superseded by AD/R22/53 in 2005, making this older directive unnecessary."}},"importantCases":[],"_links":{"self":"/api/acts/ad-r22-42-main-rotor-blades-cancelled","history":"/api/acts/ad-r22-42-main-rotor-blades-cancelled/history","analysis":"/api/acts/ad-r22-42-main-rotor-blades-cancelled/analysis","conflicts":"/api/acts/ad-r22-42-main-rotor-blades-cancelled/conflicts","importantCases":"/api/acts/ad-r22-42-main-rotor-blades-cancelled/important-cases","documents":"/api/acts/ad-r22-42-main-rotor-blades-cancelled/documents"}}