{"id":"F2006B04241","name":"AD/BEECH 90/52 Amdt 1 - Flight Controls - Inspection","slug":"ad-beech-90-52-amdt-1-flight-controls-inspection","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":44011,"registerId":"commonwealth-F2006B04241-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/BEECH 90/52 Amdt 1 - Flight Controls - 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 90/52\n\nAmdt 1\n\n\nFlight Controls - Inspection 3/79\n\n \n\nApplicability: All models : B90 & C90 with S/Nos. LJ-500 to LJ-706; E90 with S/Nos. LW-1 to LW-209 and all 65-90 and 90 series fitted with a rudder shipped from Beech during period 1 May 1973 to 1 July 1976.\n\n \n\nDocument: Beechcraft SI No. 0629-150, Rev. II.\n\n \n\nCompliance: Unless already accomplished, within 100 hours’ time in service after 31 January 1979.\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":{"flash_summary":{"complexity_score":2,"scope_assessment":{"changed":false,"description":"The supplied text is titled as an amendment (Amdt 1) but does not include the original AD text or a comparison showing additions or deletions. On the basis of the material provided alone, there is no explicit information in this document that shows how the scope differs from the original instrument, so a change of scope cannot be demonstrated from the source supplied."},"complexity_factors":["Narrow applicability defined by specific model series and serial-number ranges (Applicability).","A date-window criterion for parts fitted (rudder shipped between 1 May 1973 and 1 July 1976) which requires historical records checks (Applicability).","Mandates use of an external manufacturer Service Instruction (Beechcraft SI No. 0629-150, Rev. II) rather than setting out technical steps in the AD itself (Document).","A short, measurable compliance window tied to aircraft time-in-service (within 100 hours TIS after 31 January 1979) requiring operators to track flight hours precisely (Compliance).","Amendment status (labelled 'Amdt 1') implies previous versions exist and may require cross-checking, but the supplied text does not include prior text to compare.","The AD text does not include enforcement or evidence-of-compliance procedures, creating practical implementation questions that must be resolved under broader regulatory processes."],"plain_english_summary":"Owners/operators of specified Beechcraft 65‑90 and 90‑series aeroplanes must perform the flight‑controls inspection using Beechcraft Service Instruction No. 0629‑150, Rev. II within 100 hours TIS after 31 Jan 1979 (unless already done). The operator bears inspection and any remedial costs; the AD mandates the manufacturer’s procedure and a firm deadline to keep affected aircraft legal to fly."},"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a narrow, targeted safety directive addressing a specific manufacturing defect in a defined population of aircraft. The scope remains precisely limited to the original safety issue identified."},"complexity_factors":["Single, clearly defined applicability criteria (specific serial number ranges and date range)","Only one compliance requirement (100 hours time-in-service)","Single reference document (Beechcraft SI 0629-150 Rev. II)","No defined terms section, no cross-references to other legislation, no conditional exceptions","Extremely short document (approximately 150 words of substantive content)"],"plain_english_summary":"This is an **Airworthiness Directive (AD)** — essentially 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 certain Beechcraft King Air aeroplanes to inspect their **flight controls** (the rudder specifically) for potential defects.\n\n**Who it affects:**\n- Beechcraft Model B90 and C90 King Airs with serial numbers LJ-500 through LJ-706\n- Model E90 King Airs with serial numbers LW-1 through LW-209  \n- All Model 65-90 and 90 series aircraft that had a rudder installed from the factory between **1 May 1973 and 1 July 1976**\n\n**What must be done:**\nOperators must follow the inspection procedures in **Beechcraft Service Instruction No. 0629-150, Revision II** — a technical document from the manufacturer detailing exactly what to check.\n\n**When it must be done:**\nWithin **100 hours of flight time** after 31 January 1979, unless the inspection was already completed.\n\n**Why it matters:**\nFlight control defects can cause loss of aircraft control. This AD addresses a known safety issue with rudders shipped during a specific 3-year period, ensuring potentially defective components are identified before they fail in flight."}},"importantCases":[],"_links":{"self":"/api/acts/ad-beech-90-52-amdt-1-flight-controls-inspection","history":"/api/acts/ad-beech-90-52-amdt-1-flight-controls-inspection/history","analysis":"/api/acts/ad-beech-90-52-amdt-1-flight-controls-inspection/analysis","conflicts":"/api/acts/ad-beech-90-52-amdt-1-flight-controls-inspection/conflicts","importantCases":"/api/acts/ad-beech-90-52-amdt-1-flight-controls-inspection/important-cases","documents":"/api/acts/ad-beech-90-52-amdt-1-flight-controls-inspection/documents"}}