{"id":"F2006B01794","name":"AD/A109/10 - Nose Landing Gear Actuator","slug":"ad-a109-10-nose-landing-gear-actuator","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":40992,"registerId":"commonwealth-F2006B01794-current","compilationNumber":null,"startDate":"2026-04-01","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/A109/10 - Nose Landing Gear Actuator","content":"---\nmeta-content-style-type: text/css\nmeta-content-type: application/xhtml+xml; charset=utf-8\nmeta-description: CASA Airworthiness Directive\nmeta-generator: Aspose.Words for .NET 22.10.0\nmeta-keywords: Issue 12/1987,Rotorcraft,Agusta A109 Series Helicopters,Nose Landing Gear Actuator,10\ntitle: Airworthiness Directive - AD/A109/10 - Nose Landing Gear Actuator\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)  Agusta A109 Series Helicopters\n\n \n\nAD/A109/10 Nose Landing Gear Actuator 12/87\n\nApplicability: All Model A109A and A109AII Helicopters.\n\n \n\nRequirement: Action in accordance with Agusta Bollettino Tecnico No. 109-62, Revision A.\n\n \n\nNote: RAI AD No 87-93/A109-43 refers.\n\n \n\nCompliance: As per the Requirement Document.\n\n \n\nBackground: Additional maintenance, particularly where operations are conducted in highly humid and saline conditions, is required the nose gear retraction servo to prevent the nose landing gear collapsing during ground operation.\n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \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 focused on a specific mechanical component (nose landing gear actuator) on specific helicopter models. It has not expanded beyond its original purpose of preventing landing gear collapse through mandated maintenance."},"complexity_factors":["Very short document (approximately 150 words of substantive content)","Only 1 defined applicability criterion (two specific helicopter models)","Single requirement referencing an external technical document rather than spelling out detailed steps","No nested conditional logic or exceptions","No cross-references to other legislation beyond a single note about a related airworthiness directive","Straightforward compliance structure (follow the manufacturer's bulletin)"],"plain_english_summary":"This is an **Airworthiness Directive (AD)** issued by the Civil Aviation Safety Authority (CASA) that applies to specific Agusta helicopter models (the A109A and A109AII).\n\n**What it does:**\n- Requires owners and operators of these helicopters to perform specific maintenance on the **nose landing gear actuator** (the hydraulic mechanism that raises and lowers the front wheel)\n- The maintenance must follow a technical bulletin from the manufacturer (Agusta Bollettino Tecnico No. 109-62, Revision A)\n\n**Why it matters:**\n- Without this maintenance, the nose landing gear could **collapse during ground operations** — a serious safety risk\n- The risk is higher in **humid and salty conditions** (like coastal operations), which can cause corrosion or other damage to the servo mechanism\n\n**Who must comply:**\n- Anyone operating or maintaining Model A109A and A109AII helicopters in Australia\n\n**When to comply:**\n- As specified in the manufacturer's technical bulletin referenced above"},"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":false,"description":"The instrument applies to Agusta A109A and A109AII models and mandates additional maintenance per the manufacturer revision cited. The text shows no indication that the AD broadens or narrows its applicability beyond that stated; it implements the manufacturer document (Revision A) and references a related AD but does not alter the described scope."},"complexity_factors":["Reliance on an external technical document for the detailed work instructions (Requirement: Agusta Bollettino Tecnico No. 109-62, Revision A).","Narrow, model-specific applicability reduces scope but increases the need for accurate operator identification (Applicability: All Model A109A and A109AII).","Technical, environment-specific maintenance task tied to humid and saline operating conditions (Background).","Compliance is delegated to following the referenced document rather than set out in the AD, creating a traceability/compliance-check burden (Compliance: 'As per the Requirement Document').","Administrative cross-reference to related ADs (Note: RAI AD No 87-93/A109-43) which creates linkage for record-keeping and enforcement."],"plain_english_summary":"This Airworthiness Directive requires operators of Agusta A109A and A109AII helicopters to carry out additional maintenance on the nose‑landing‑gear retraction servo in accordance with Agusta Bollettino Tecnico No. 109‑62 Revision A (Requirement; Applicability). It addresses the risk of nose‑gear collapse during ground operations in highly humid or saline environments (Background). The operator pays for and must perform the maintenance; CASA enforces compliance as stated (Compliance)."}},"importantCases":[],"_links":{"self":"/api/acts/ad-a109-10-nose-landing-gear-actuator","history":"/api/acts/ad-a109-10-nose-landing-gear-actuator/history","analysis":"/api/acts/ad-a109-10-nose-landing-gear-actuator/analysis","conflicts":"/api/acts/ad-a109-10-nose-landing-gear-actuator/conflicts","importantCases":"/api/acts/ad-a109-10-nose-landing-gear-actuator/important-cases","documents":"/api/acts/ad-a109-10-nose-landing-gear-actuator/documents"}}