{"id":"F2006B03945","name":"AD/BEECH 50/21 - Flap Bracket","slug":"ad-beech-50-21-flap-bracket","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":43554,"registerId":"commonwealth-F2006B03945-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/BEECH 50/21 - Flap Bracket","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 50 (Twin Bonanza) Series Aeroplanes\n\n \n\nAD/BEECH 50/21 Flap Bracket 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\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 addressing a specific mechanical defect in a specific aircraft type. It has not expanded beyond its original safety purpose."},"complexity_factors":["Extremely short document (under 200 words)","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 temporal trigger (1000+ hours) with straightforward recurring obligation","Single mechanical component focus with binary inspection outcome (cracks or no cracks)"],"plain_english_summary":"This is an **Airworthiness Directive** — a mandatory safety order issued by Australia's Civil Aviation Safety Authority (CASA) for specific aircraft.\n\n**What it does:**\nOrders owners and operators of **Beechcraft 50 (Twin Bonanza) series aeroplanes** to inspect the flap actuator brackets (the metal parts that connect the flaps — the moving surfaces on the wings that help with takeoff and landing — to the aircraft's control system) for cracks or damage.\n\n**Who it affects:**\nAll Beechcraft 50 models that have flown **1,000 hours or more**.\n\n**What must be done:**\n- **Initial inspection:** Within 100 hours of flying time after 31 August 1972\n- **Repeat inspections:** Every 300 hours of flying time thereafter\n\n**Why it matters:**\nCracked flap brackets could cause the flaps to fail during flight, potentially leading to loss of control during critical phases like landing. This directive prevents accidents by catching fatigue damage before it becomes catastrophic."},"flash_summary":{"complexity_score":2,"scope_assessment":{"changed":false,"description":"The AD text sets a focused scope: targeted inspections of flap actuator brackets on Beechcraft 50 series with 1,000+ hours TIS and specific compliance intervals (Applicability; Requirement; Compliance). The instrument itself does not indicate any expansion or narrowing of that scope relative to its stated terms."},"complexity_factors":["Narrow, clearly defined applicability (models with ≥1,000 hours TIS). (Applicability)","Single, specific inspection requirement (flap actuator bracket and adjacent structure on RH and LH flaps). (Requirement)","Fixed and simple compliance timing (initial within 100 hours after 31 Aug 1972; recurring ≤300 hours). (Compliance)","No detailed inspection procedure, acceptance criteria, or corrective-action instructions given — operators must supply technical method. (Requirement)","No alternative compliance routes, exemptions, or staged implementation set out in the text. (Requirement; Compliance)"],"plain_english_summary":"This AD requires owners/operators of Beechcraft 50 (Twin Bonanza) aeroplanes with 1,000+ hours TIS to perform scheduled inspections of the flap actuator bracket and adjacent structure on both left and right flaps to detect cracks or distress. The first inspection is due within 100 hours TIS after 31 August 1972 and must be repeated at intervals not exceeding 300 hours TIS."}},"importantCases":[],"_links":{"self":"/api/acts/ad-beech-50-21-flap-bracket","history":"/api/acts/ad-beech-50-21-flap-bracket/history","analysis":"/api/acts/ad-beech-50-21-flap-bracket/analysis","conflicts":"/api/acts/ad-beech-50-21-flap-bracket/conflicts","importantCases":"/api/acts/ad-beech-50-21-flap-bracket/important-cases","documents":"/api/acts/ad-beech-50-21-flap-bracket/documents"}}