{"id":"F2009L00444","name":"AD/BELL 205/42 - Main Rotor Hub Inboard Fitting - Life Reduction - CANCELLED","slug":"ad-bell-205-42-main-rotor-hub-inboard-fitting-life-reduction-cancelled","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":76937,"registerId":"commonwealth-F2009L00444-current","compilationNumber":null,"startDate":"2026-04-02","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"Bell Helicopter Textron 205 Series Helic","sectionType":"division","heading":"Bell Helicopter Textron 205 Series Helicopters","content":"### Bell Helicopter Textron 205 Series Helicopters\n\n| AD/BELL 205/42 | Main Rotor Hub InboardFitting - Life Reduction | 3/2009 |\n| -------------- | ---------------------------------------------- | ------ |\n\n| Requirement: | CANCELLED.                                                                                                                                                                                                                                                                                               |\n| ------------ | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |\n|              | This AD is cancelled on 12 March 2009.                                                                                                                                                                                                                                                                   |\n| Background:  | This unique Australian AD, issued in 1978, required retirement of the main rotor hub inboard fitting in accordance with Bell ASB Bell SB No. 205-78-3. As this requirement is now contained in the mandatory airworthiness limitations schedule of the maintenance manual, the AD is no longer required. |\n\n![](image.001.png)\n\nDavid Punshon  \nDelegate of the Civil Aviation Safety Authority\n\n28 January 2009","sortOrder":0},{"sectionNumber":"AD/BELL 205/42","sectionType":"part","heading":"AD/BELL 205/42","content":"## AD/BELL 205/42","sortOrder":1},{"sectionNumber":"Main Rotor Hub InboardFitting - Life Red","sectionType":"part","heading":"Main Rotor Hub InboardFitting - Life Reduction","content":"## Main Rotor Hub Inboard  \nFitting - Life Reduction","sortOrder":2},{"sectionNumber":"3/2009","sectionType":"part","heading":"3/2009","content":"## 3/2009","sortOrder":3}],"analysis":{"kimi_summary":{"_metrics":{"model":"kimi-k2.5","source":"moonshot-batch","completionTokens":1814},"content_quality":"ok","complexity_score":1,"scope_assessment":{"changed":false,"description":"This instrument terminates the Airworthiness Directive entirely rather than expanding its scope. The regulatory obligation is being removed because the safety requirement has been subsumed into mandatory aircraft maintenance documentation."},"complexity_factors":["Single operative provision (cancellation)","No conditional logic, exceptions, or triggers","No defined terms section","Only one cross-reference (to the maintenance manual)"],"plain_english_summary":"**What this does**\nThis document cancels an old safety rule (Airworthiness Directive 42) that applied to Bell 205 series helicopters. The original 1978 rule required operators to retire (replace) the main rotor hub inboard fitting—a critical part that holds the rotor blades—after a specific number of flight hours to prevent mechanical failure.\n\n**Who it affects**\nOwners and operators of Bell Helicopter Textron 205 series helicopters.\n\n**Why it matters**\nAs of 12 March 2009, pilots and mechanics no longer need to follow this specific directive. The safety requirement hasn't disappeared; it has simply been moved into the aircraft's mandatory maintenance manual (airworthiness limitations schedule). This streamlines compliance by putting the rule where maintenance crews already look for technical instructions, rather than as a separate legal instrument."}},"importantCases":[],"_links":{"self":"/api/acts/ad-bell-205-42-main-rotor-hub-inboard-fitting-life-reduction-cancelled","history":"/api/acts/ad-bell-205-42-main-rotor-hub-inboard-fitting-life-reduction-cancelled/history","analysis":"/api/acts/ad-bell-205-42-main-rotor-hub-inboard-fitting-life-reduction-cancelled/analysis","conflicts":"/api/acts/ad-bell-205-42-main-rotor-hub-inboard-fitting-life-reduction-cancelled/conflicts","importantCases":"/api/acts/ad-bell-205-42-main-rotor-hub-inboard-fitting-life-reduction-cancelled/important-cases","documents":"/api/acts/ad-bell-205-42-main-rotor-hub-inboard-fitting-life-reduction-cancelled/documents"}}