{"id":"F2006B04878","name":"AD/CASA/21 - Corrosion Prevention and Control Programme (CPCP)","slug":"ad-casa-21-corrosion-prevention-and-control-programme-cpcp","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":44685,"registerId":"commonwealth-F2006B04878-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/CASA/21 - Corrosion Prevention and Control Programme (CPCP)","content":"COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 \\- 105 CIVIL AVIATION SAFETY AUTHORITY\n\nSCHEDULE OF AIRWORTHINESS DIRECTIVES\n\n![](image.001.png)  \nCasa 212 Series Aeroplanes\n\nAD/CASA/21 Corrosion Prevention and Control Programme (CPCP)\n\n  \n9/96\n\nApplicability: All models.\n\nRequirement: Action in accordance with Document CPCP C-212-PV01 dated 31 March 1995 issued by \"Construccions Aeronauticas\".\n\nNote: Spanish DGAC AD 01/96 refers.\n\nCompliance: For aircraft less than 15 years since build at 15 August 1996:\n\nInitial completion of tasks defined in the Requirement Document for each aircraft area must occur in a period not exceeding the interval established in the Requirement Document, beginning at no later than 15 August 1997; or at the implementation age specified in the Requirement Document; whichever occurs last. Thereafter at intervals not to exceed those specified in the Requirement Document.\n\nFor aircraft greater than 15 years since build at 15 August 1996:\n\nInitial completion of all tasks defined in the Requirement Document must be completed within the four years following 15 August 1997, or within the periods specified in the Requirement document; whichever occurs first. Thereafter at intervals not to exceed those specified in the Requirement Document.\n\nBackground: This Directive arises from the work carried out by the internationally sponsored Ageing Aircraft Working Group now known as the Airworthiness Assurance Task Force.","sortOrder":0}],"analysis":{"flash_summary_failed":{"failed":true,"reason":"Unauthenticated. Configure AI_GATEWAY_API_KEY or use a provider module. Learn more: https://ai-sdk.dev/unauthenticated-ai-gateway","source":"analysis-cron"},"kimi_summary":{"content_quality":"ok","complexity_score":3,"scope_assessment":{"changed":false,"description":"This is a single-issue Airworthiness Directive focused specifically on corrosion prevention for one aircraft type. It has not expanded beyond its original safety purpose."},"complexity_factors":["Single, clearly defined applicability (one aircraft series)","Only one primary technical document referenced (CPCP C-212-PV01)","Two straightforward compliance pathways based on aircraft age (binary split at 15 years)","No defined terms section or interpretation provisions","Minimal cross-referencing (one Spanish DGAC AD mentioned in a note only)","Short document (approximately 200 words)","No nested exceptions or conditional sub-clauses"],"plain_english_summary":"Owners, operators and maintainers of CASA 212 series aeroplanes in Australia must implement the manufacturer’s Corrosion Prevention and Control Programme (CPCP C-212-PV01). The AD mandates structured inspection, prevention and repair of corrosion to keep these ageing utility aircraft airworthy and legally compliant.\n\nNewer aircraft (under 15 years in Aug 1996) must begin the programme by Aug 1997 and follow recurring intervals; older aircraft had to complete the full programme within four years after Aug 1997."},"flash_summary":{"complexity_score":4,"scope_assessment":{"changed":false,"description":"The Directive applies to 'All models' of the CASA 212 series and implements the CPCP from Construccions Aeronauticas. The text sets compliance timing but does not expand or narrow the stated applicability in the instrument itself; no change of scope from the Directive’s expressed coverage is indicated in the source text."},"complexity_factors":["Dependence on an external technical Requirement Document (CPCP C-212-PV01) for the substantive tasks and intervals rather than listing them in the Directive.","Age‑based compliance windows with two different regimes (<15 years and >15 years as at 15 Aug 1996) that create different initial deadlines and follow‑up schedules.","Deadlines expressed relative to specified calendar dates and ‘‘implementation age’’ triggers, requiring operators to calculate applicability per airframe.","Recurring inspection/maintenance intervals set by the Requirement Document, creating ongoing administrative and tracking burden for operators.","Cross-reference to a foreign authority’s AD (Spanish DGAC AD 01/96), which may require operators to reconcile multiple regulatory texts."],"plain_english_summary":"This airworthiness directive requires all CASA 212 series aircraft to implement the Corrosion Prevention and Control Programme set out in Document CPCP C-212-PV01 (31 March 1995). Aircraft operators must carry out the specified corrosion-prevention tasks on the timetable that depends on each aircraft’s age, with initial completion windows and repeating intervals set by the Requirement Document. It affects aircraft owners/operators by imposing inspection and maintenance actions and recurring compliance obligations."}},"importantCases":[],"_links":{"self":"/api/acts/ad-casa-21-corrosion-prevention-and-control-programme-cpcp","history":"/api/acts/ad-casa-21-corrosion-prevention-and-control-programme-cpcp/history","analysis":"/api/acts/ad-casa-21-corrosion-prevention-and-control-programme-cpcp/analysis","conflicts":"/api/acts/ad-casa-21-corrosion-prevention-and-control-programme-cpcp/conflicts","importantCases":"/api/acts/ad-casa-21-corrosion-prevention-and-control-programme-cpcp/important-cases","documents":"/api/acts/ad-casa-21-corrosion-prevention-and-control-programme-cpcp/documents"}}