{"id":"F2006B04219","name":"AD/BEECH 90/28 - Flap Bracket - Inspection","slug":"ad-beech-90-28-flap-bracket-inspection","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":43975,"registerId":"commonwealth-F2006B04219-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/BEECH 90/28 - Flap Bracket - Inspection","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 90 and 65-90 (King Air) Series Aeroplanes\n\n \n\nAD/BEECH 90/28 Flap Bracket - Inspection 8/72\n\nApplicability: All models which have achieved 1000 or more hours’ time in service.\n\n \n\nRequirement: Inspect flap actuator bracket and adjacent structure on RH and LH flaps for cracks or signs of distress.\n\n \n\nCompliance: Within 100 hours’ time in service after 31 August 1972 and thereafter at intervals not exceeding 300 hours’ time in service.\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, single-issue airworthiness directive from 1972. It has not grown beyond its original purpose of addressing a specific structural inspection requirement for flap brackets on specific Beechcraft models. The scope remains precisely as originally intended."},"complexity_factors":["Very short document (approximately 150 words of substantive content)","Only 3 operative provisions: applicability, requirement, and compliance","No defined terms section — uses plain language ('time in service', 'RH and LH')","No cross-references to other legislation or regulations","Simple conditional logic: single threshold (1000+ hours) triggers obligation","No exceptions, exemptions, or nested conditions"],"plain_english_summary":"This is an **Airworthiness Directive (AD)** — essentially a mandatory safety notice issued by Australia's Civil Aviation Safety Authority (CASA) for specific aircraft.\n\n**What it does:**\nOrders owners and operators of certain Beechcraft King Air aeroplanes (models 90 and 65-90 series) to inspect a specific part — the flap actuator bracket and surrounding structure on both left and right wings — for cracks or damage.\n\n**Who it affects:**\nAnyone who owns or operates a Beechcraft 90 or 65-90 series King Air that has flown **1,000 hours or more**.\n\n**What must be done:**\n- **First inspection:** Within 100 flight hours after 31 August 1972\n- **Ongoing inspections:** Every 300 flight hours thereafter\n\n**Why it matters:**\nFlap brackets are critical structural components that help control the aircraft's flaps (the moving surfaces on the wings that help with take-off and landing). Cracks in these brackets could lead to structural failure, potentially causing loss of control. This AD was issued to catch problems before they become dangerous.\n\nThis is a **historical directive** from 1972, so modern operators of these aircraft would need to check whether it has been superseded by later directives."},"flash_summary":{"complexity_score":2,"scope_assessment":{"changed":false,"description":"The supplied text states a single, specific inspection requirement, its applicability and the compliance intervals. There is no indication within the provided document of any amendment or expansion of scope from the instrument's stated requirements."},"complexity_factors":["Narrow, specific applicability (models with ≥1,000 hours’ time in service).","Single, clearly stated inspection requirement (flap actuator bracket and adjacent structure on RH and LH flaps).","Clear compliance timing (initial within 100 hours after 31 Aug 1972; thereafter ≤300‑hour intervals).","Lack of procedural detail: inspection method, acceptance criteria and corrective actions are not specified, creating implementation ambiguity.","No allocation of costs or enforcement/penalty language in the supplied text.","Dated reference point (31 August 1972) — simple schedule but anchored to a historical date."],"plain_english_summary":"This AD from the Civil Aviation Safety Authority requires operators of Beechcraft 90 and 65‑90 (King Air) aeroplanes with 1,000+ hours TIS to start and repeat inspections of the flap actuator bracket and adjacent structure for cracks or distress. It mandates the first check within 100 hours after 31 Aug 1972 and then every 300 hours, creating a recurring maintenance obligation to manage structural safety risk."}},"importantCases":[],"_links":{"self":"/api/acts/ad-beech-90-28-flap-bracket-inspection","history":"/api/acts/ad-beech-90-28-flap-bracket-inspection/history","analysis":"/api/acts/ad-beech-90-28-flap-bracket-inspection/analysis","conflicts":"/api/acts/ad-beech-90-28-flap-bracket-inspection/conflicts","importantCases":"/api/acts/ad-beech-90-28-flap-bracket-inspection/important-cases","documents":"/api/acts/ad-beech-90-28-flap-bracket-inspection/documents"}}