{"id":"F2006B03839","name":"AD/BEECH 35/41 Amdt 1 - Landing Gear Shock Strut Piston","slug":"ad-beech-35-41-amdt-1-landing-gear-shock-strut-piston","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":43448,"registerId":"commonwealth-F2006B03839-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/BEECH 35/41 Amdt 1 - Landing Gear Shock Strut Piston","content":"---\nmeta-content-style-type: text/css\nmeta-content-type: application/xhtml+xml; charset=utf-8\nmeta-generator: Aspose.Words for .NET 22.10.0\n---\n\n?xml version=\"1.0\" encoding=\"utf-8\" standalone=\"no\"?>\n\nCOMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY\n\nSCHEDULE OF AIRWORTHINESS DIRECTIVES\n\n \n\n![](image.001.png)  Beechcraft 35 (Bonanza) Series Aeroplanes\n\n \n\nAD/BEECH 35/41\n\nAmdt 1\n\n\nLanding Gear Shock Strut Piston 1/74\n\n \n\nApplicability: All model V35B with S/Nos. D9469 to D9536 except D9481, D9532 and D9533. Requirement:               Action in accordance with Beechcraft SI No. 0612-200.\n\nCompliance: Within 100 hours time in service after 31 January 1974 unless already accomplished.\n\n \n","sortOrder":0}],"analysis":{"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a discrete, targeted safety directive addressing a specific mechanical defect in a narrow range of aircraft. It has not expanded beyond its original purpose of ensuring landing gear safety in affected Beechcraft models."},"complexity_factors":["Very short document (approximately 150 words)","Only 1 defined applicability criterion (specific serial number range with 3 exceptions)","Single compliance requirement referencing an external technical document","No nested conditional logic or cross-references to other legislation","Straightforward temporal trigger (100 hours time in service after fixed date)"],"plain_english_summary":"This is a **mandatory safety notice** (called an Airworthiness Directive) issued by Australia's aviation safety regulator for specific Beechcraft Bonanza aeroplanes.\n\n**What it does:**\n- Requires owners and operators of certain Beechcraft V35B model aeroplanes (serial numbers D9469 to D9536, excluding three specific planes) to inspect or fix a problem with the **landing gear shock strut piston** — a hydraulic component that absorbs impact when the plane lands.\n\n**Who must comply:**\n- Anyone operating the affected aircraft models listed above.\n\n**What action is required:**\n- Follow the instructions in **Beechcraft Service Instruction No. 0612-200** (a technical document from the manufacturer).\n\n**When it must be done:**\n- Within 100 hours of flying time after 31 January 1974, unless the work was already completed.\n\n**Why it matters:**\n- Landing gear failures can cause serious accidents during takeoff or landing. This directive ensures a known defect in the shock strut piston is addressed before it causes a safety incident."},"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":true,"description":"This instrument is labelled as Amendment 1 to AD/BEECH 35/41, so it amends a prior airworthiness directive. As presented, the amendment defines a precise applicability (specific V35B serial numbers with stated exclusions), mandates completion of Beechcraft Service Instruction No. 0612-200, and fixes a compliance window of 100 hours time in service after 31 January 1974 (Applicability; Requirement; Compliance). The supplied text does not include the original AD text, so specific differences from the prior instrument cannot be enumerated here; but the document’s title and content make clear it is an amendment that sets or updates scope and compliance mechanics."},"complexity_factors":["Narrow, serial-number-limited applicability (V35B S/N D9469–D9536, with three serial numbers excluded) increases administrative specificity and tracking requirements (Applicability).","Reference to an external technical document (Beechcraft SI No. 0612-200) requires access to and reliance on the manufacturer’s instruction rather than containing the remedy in the AD itself (Requirement).","Fixed historical compliance deadline tied to flight hours after a calendar date (100 hours TIS after 31 January 1974) requires operators to compute accrued time-in-service and schedule work accordingly (Compliance).","Minimal text in the AD about the technical defect or parts required means implementers must consult the service instruction and possibly the manufacturer or a maintenance organisation for detail (Requirement).","Enforcement under the Civil Aviation Regulations Part 39 framework creates standard regulatory consequences, but the AD itself leaves limited discretionary options for operators beyond performing the mandated action (Header)."],"plain_english_summary":"This airworthiness directive requires owners/operators of specific Beechcraft V35B aeroplanes (S/N D9469–D9536, excluding D9481, D9532, D9533) to carry out the maintenance specified in Beechcraft Service Instruction No. 0612-200 within 100 hours’ time‑in‑service after 31 January 1974 (unless already done).  \n\nCosts, scheduling and technical detail are the operator’s responsibility; CASA enforces the AD but the AD itself delegates the technical remedy to the manufacturer’s service instruction."}},"importantCases":[],"_links":{"self":"/api/acts/ad-beech-35-41-amdt-1-landing-gear-shock-strut-piston","history":"/api/acts/ad-beech-35-41-amdt-1-landing-gear-shock-strut-piston/history","analysis":"/api/acts/ad-beech-35-41-amdt-1-landing-gear-shock-strut-piston/analysis","conflicts":"/api/acts/ad-beech-35-41-amdt-1-landing-gear-shock-strut-piston/conflicts","importantCases":"/api/acts/ad-beech-35-41-amdt-1-landing-gear-shock-strut-piston/important-cases","documents":"/api/acts/ad-beech-35-41-amdt-1-landing-gear-shock-strut-piston/documents"}}