{"id":"F2006B08387","name":"AD/CESSNA 500/13 - Pre-Certification Requirements - Modifications","slug":"ad-cessna-500-13-pre-certification-requirements-modifications","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":115822,"registerId":"commonwealth-F2006B08387-current","compilationNumber":null,"startDate":"2026-04-03","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/CESSNA 500/13 - Pre-Certification Requirements - Modifications","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)  Cessna 500 (Citation) Series Aeroplanes\n\n \n\nAD/CESSNA 500/13  Pre-Certification Requirements - Modifications\n\n\n10/75\n\n \n\nApplicability: All models.\n\n \n\nDocument:  Cessna Citation SB 24-9. Compliance: Before 31 October 1975.\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\n \n\n \n\n \n","sortOrder":0}],"analysis":{"kimi_summary":{"_metrics":{"model":"kimi-k2.5","source":"moonshot-batch","completionTokens":2283},"content_quality":"ok","complexity_score":1,"scope_assessment":{"changed":false,"description":"This AD maintains its original narrow, specific scope. It requires only the pre-certification modifications detailed in the referenced service bulletin for Cessna 500 aircraft, with no evidence of expansion into broader operational or maintenance requirements."},"complexity_factors":["Single, unqualified compliance requirement","No defined terms or interpretation provisions","No exceptions, conditions, or nested logic","Straightforward applicability (all models)","Incorporates external technical document by reference without modification"],"plain_english_summary":"**What this is:** This is an **Airworthiness Directive** (AD) — a mandatory safety order issued by the aviation regulator (CASA) requiring aircraft owners to perform specific modifications to address unsafe conditions.\n\n**Who it affects:** Owners and operators of **Cessna 500 Citation series aircraft** (all models).\n\n**What it requires:** Operators were required to complete specific modifications outlined in **Cessna Service Bulletin 24-9** (technical instructions from the manufacturer) **before 31 October 1975**.\n\n**Why it matters:** This ensured these aircraft met critical safety standards before certification. While the compliance deadline has long passed, this directive established mandatory safety modifications for the Australian fleet of these business jets."}},"importantCases":[],"_links":{"self":"/api/acts/ad-cessna-500-13-pre-certification-requirements-modifications","history":"/api/acts/ad-cessna-500-13-pre-certification-requirements-modifications/history","analysis":"/api/acts/ad-cessna-500-13-pre-certification-requirements-modifications/analysis","conflicts":"/api/acts/ad-cessna-500-13-pre-certification-requirements-modifications/conflicts","importantCases":"/api/acts/ad-cessna-500-13-pre-certification-requirements-modifications/important-cases","documents":"/api/acts/ad-cessna-500-13-pre-certification-requirements-modifications/documents"}}