{"id":"F2006B02168","name":"AD/AC-100/16 - Flap Quadrant - Replacement","slug":"ad-ac-100-16-flap-quadrant-replacement","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":41398,"registerId":"commonwealth-F2006B02168-current","compilationNumber":null,"startDate":"2026-04-01","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/AC-100/16 - Flap Quadrant - Replacement","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 4/1973,Aircraft below 5700 kg,S.L. Industries Commander 100 Series and Volair 10 Series Aeroplanes,Flap Quadrant - Replacement,16\ntitle: Airworthiness Directive - AD/AC-100/16 - Flap Quadrant - Replacement\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)  S.L. Industries Commander 100 Series and Volair 10 Series Aeroplanes\n\n \n\nAD/AC-100/16 Flap Quadrant - Replacement 4/73\n\nApplicability: All models with S/Nos. 026 to 360 and 5001 to 5100. Document:  Aero Commander SL No. S-1205.\n\nCompliance: For aircraft which have exceeded 300 hours’ time in service as at 30 April 1973 - within 100 hours’ time in service after 30 April 1973. For all other aircraft - prior to achieving 400 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\n \n","sortOrder":0}],"analysis":{"kimi_summary":{"_metrics":{"model":"kimi-k2.5","source":"moonshot-batch","completionTokens":1573},"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"The directive maintains its original narrow scope, targeting only flap quadrant replacement for specific aircraft serial numbers."},"complexity_factors":["Single operative provision with no sections or subsections","No interpretation clause or defined terms","Simple conditional logic based on two variables (flight hours and date)","Minimal cross-referencing (only one referenced document: Aero Commander SL No. S-1205)"],"plain_english_summary":"**What this does:** This directive mandates the replacement of a specific aircraft part — the \"flap quadrant\" (a mechanical component that controls the wing flaps used during takeoff and landing) — on certain light aircraft.\n\n**Who it affects:** Owners and operators of **S.L. Industries Commander 100 Series and Volair 10 Series** aeroplanes with serial numbers between **026–360** and **5001–5100**.\n\n**What you must do:**\n*   If your aircraft had already flown **more than 300 hours** by 30 April 1973, you must replace the part within **100 hours** of flying time after that date.\n*   For all other affected aircraft, you must replace the part **before** the aircraft reaches **400 total hours** of flying time.\n\n**Why it matters:** This prevents potential mechanical failure of the flap control system, ensuring pilots can safely adjust wing flaps during critical phases of flight."}},"importantCases":[],"_links":{"self":"/api/acts/ad-ac-100-16-flap-quadrant-replacement","history":"/api/acts/ad-ac-100-16-flap-quadrant-replacement/history","analysis":"/api/acts/ad-ac-100-16-flap-quadrant-replacement/analysis","conflicts":"/api/acts/ad-ac-100-16-flap-quadrant-replacement/conflicts","importantCases":"/api/acts/ad-ac-100-16-flap-quadrant-replacement/important-cases","documents":"/api/acts/ad-ac-100-16-flap-quadrant-replacement/documents"}}