{"id":"F2005L01044","name":"AD/CL-600/64 - Corrosion Prevention and Control Program","slug":"ad-cl-600-64-corrosion-prevention-and-control-program","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":34602,"registerId":"commonwealth-F2005L01044-current","compilationNumber":null,"startDate":"2026-04-01","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"Bombardier (Canadair) CL-600 (Challenger","sectionType":"division","heading":"Bombardier (Canadair) CL-600 (Challenger) Series Aeroplanes","content":"### Bombardier (Canadair) CL-600 (Challenger) Series Aeroplanes\n\n| AD/CL-600/64 | Corrosion Prevention and Control Program | 6/2005 |\n| ------------ | ---------------------------------------- | ------ |\n\n| Applicability: | All Models CL-600-1A11 (CL600), CL-600-2A12 (CL601), and CL-600-2B16 (CL-601-3A/-3R) aircraft.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 |\n| -------------- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |\n| Requirement:   | 1. Incorporate the Bombardier Inc. Corrosion Prevention and Control Program (CPCP), or later Transport Canada approved revisions, into the operator’s approved maintenance program.2. CPCP tasks are to be accomplished at the next corresponding maintenance review board (MRB) task or the next CPCP task interval (if no corresponding MRB task exists).3. Any corrosion found must be reported and the necessary rework action taken.The incorporation of the CPCP into the operator’s maintenance schedule constitutes terminating action for this Directive.Note: Transport Canada AD CF-2005-06 refers. |\n| Compliance:    | 1. Within one year after 9 June 2005, unless already accomplished.2. From the date the CPCP is incorporated in the operator maintenance program.3. As specified in Transport Canada AD CF-2005-06 Corrective Action Paragraphs 2, 3, and 4.                                                                                                                                                                                                                                                                                                                                                                    |\n|                | This Airworthiness Directive becomes effective on 9 June 2005.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 |\n| Background:    | Service experience indicates that as aircraft become older, they are more likely to exhibit indications of corrosion. Transport Canada has committed to ensuring that additional maintenance programs for older aircraft are developed and implemented to minimise and control corrosive deterioration that could jeopardise airworthiness.                                                                                                                                                                                                                                                                    |\n\n![](image.001.png)  \nDavid Villiers  \nDelegate of the Civil Aviation Safety Authority\n\n27 April 2005","sortOrder":0},{"sectionNumber":"AD/CL-600/64","sectionType":"part","heading":"AD/CL-600/64","content":"## AD/CL-600/64","sortOrder":1},{"sectionNumber":"Corrosion Prevention and Control Program","sectionType":"part","heading":"Corrosion Prevention and Control Program","content":"## Corrosion Prevention and Control Program","sortOrder":2},{"sectionNumber":"6/2005","sectionType":"part","heading":"6/2005","content":"## 6/2005","sortOrder":3}],"analysis":{"flash_summary_failed":{"failed":true,"reason":"A positive credit balance is required for all requests, including BYOK, so fallback providers remain available. Add credits at https://vercel.com/d?to=%2F%5Bteam%5D%2F%7E%2Fai%3Fmodal%3Dtop-up to continue.","source":"analysis-cron"},"flash_summary":{"complexity_score":2,"scope_assessment":{"changed":false,"description":"The AD stays within the original, stated purpose of reducing corrosion risk on aging CL-600 series aeroplanes. It does not broaden regulatory scope beyond requiring the adoption of an established manufacturer program (Bombardier CPCP) and compliance with an existing Transport Canada AD. The directive prescribes procedural steps (incorporation, scheduling, reporting and corrective work) rather than adding new regulatory powers or unrelated obligations, so it has not grown significantly beyond its original corrosion‑prevention intent."},"complexity_factors":["Short, single-purpose Airworthiness Directive (AD) with limited provisions","Applicability limited to three CL-600 model groups (CL-600-1A11, CL-600-2A12, CL-600-2B16)","Three core substantive requirements (incorporate CPCP; schedule CPCP tasks; report and correct corrosion)","One primary external cross-reference: Transport Canada AD CF-2005-06 (for corrective-action detail)","Conditional scheduling language: 'next corresponding MRB task or the next CPCP task interval (if no corresponding MRB task exists)' — a single conditional clause","Terminology that requires program amendment and regulator approval (incorporation into operator’s 'approved maintenance program')","Compliance timeline is simple (within one year of effective date) with continuing obligations thereafter"],"plain_english_summary":"**What this directive does (mechanically)**\n\n- Requires every operator of Bombardier (Canadair) CL-600 series aeroplanes (models CL-600-1A11, CL-600-2A12 and CL-600-2B16) to put the Bombardier Inc. Corrosion Prevention and Control Program (CPCP) into their approved maintenance program. The operator may use later CPCP revisions if those are approved by Transport Canada. (Requirement 1)\n- Requires operators to carry out the CPCP tasks at the next corresponding Maintenance Review Board (MRB) task or, if there is no corresponding MRB task, at the next CPCP task interval. (Requirement 2)\n- Requires operators to report any corrosion found and to perform the necessary corrective work. (Requirement 3)\n- States that once the CPCP is incorporated into an operator’s maintenance schedule, that incorporation fulfils (terminates) this Directive. (Requirement — terminating action)\n- Cross-references Transport Canada Airworthiness Directive CF-2005-06 for the specific corrective-action paragraphs that must be followed. (Requirement and Compliance)\n\n**Timing / compliance**\n\n- Operators had to incorporate the CPCP within one year after 9 June 2005 unless it had already been done. (Compliance 1)\n- Ongoing CPCP tasks apply from the date the program is incorporated into the maintenance program. (Compliance 2)\n- Corrective actions must follow the directions set out in Transport Canada AD CF-2005-06 (Compliance 3).\n- The AD took effect on 9 June 2005.\n\n**Why the rule was made (official rationale)**\n\n- Transport Canada and the Civil Aviation Safety Authority note that older aircraft are more likely to develop corrosion. The stated purpose is to ensure additional, consistent maintenance work is done on aging CL-600 series aeroplanes to minimise corrosive deterioration that could affect airworthiness. (Background)\n\n**Who this affects and who pays**\n\n- Primary affected parties: aircraft operators/owners of the specified CL-600 models and the maintenance organisations that service them (including independent maintenance, repair and overhaul (MRO) providers engaged by operators). (Applicability + Requirement)\n- Who pays: operators bear the direct costs of incorporating CPCP tasks into their approved maintenance program and of performing the additional inspections, reports and any corrective work identified.\n\n**Who decides and what changes in behaviour**\n\n- Regulators set the requirement; operators must decide how to schedule and resource the CPCP tasks within their approved maintenance programs. Maintenance organisations decide how to deliver the CPCP tasks and corrective work under contract to operators.\n- Behavioural changes for operators: add CPCP items to maintenance schedules, increase inspections for corrosion, report corrosion when found, perform corrective maintenance as specified. For MRO providers: adopt CPCP task procedures, documentation and (where necessary) training.\n\n**Costs, incentives and trade-offs**\n\n- Direct costs: increased inspection and repair labour, possible parts replacement, administrative work to modify approved maintenance programs and to file reports. These are ongoing where additional CPCP intervals apply.\n- Potential benefits: earlier detection and remediation of corrosion that could avert more costly structural repairs or safety incidents later. The directive treats the cost as a preventative maintenance expense paid by operators.\n- Opportunity cost: time and resources devoted to CPCP tasks are not available for other maintenance or operational activities.\n- Incentives: operators have an incentive to comply because incorporation is the terminating action for the AD; non‑compliance risks regulatory enforcement and potential safety consequences.\n\n**Implementation risk and compliance burden**\n\n- Implementation risk is moderate: CPCP must be integrated into each operator’s approved maintenance program and aligned with MRB tasks or CPCP intervals; that requires program amendment, documentation and coordination with regulators and MROs.\n- Compliance burden is predictable rather than open-ended — the AD specifies incorporation and intervals — but the cross-reference to Transport Canada AD CF-2005-06 means operators must follow another instrument for the precise corrective steps.\n\n**Effects on markets and private choice**\n\n- Competition / independent businesses: independent MROs can supply CPCP work, creating demand for maintenance services; small operators may face fixed compliance costs (program amendment, administrative work) that are proportionally larger for them, but the AD applies uniformly across operators of the listed models.\n- Prices / productivity: maintenance costs for CL-600 operators are likely to rise modestly (additional inspection and repair work). Productivity of operators may be affected by additional maintenance downtime.\n- Contract freedom and ownership: operators remain free to contract with any appropriately approved maintenance organisation, subject to requirements that the maintenance program be an approved one and that CPCP tasks be performed.\n\n**Notable legal mechanics and references**\n\n- Incorporation of the Bombardier CPCP (or later Transport Canada approved revisions) into the operator’s approved maintenance program is explicitly the action that satisfies the AD.\n- The AD relies on and requires compliance with Transport Canada AD CF-2005-06 for specific corrective actions; operators must consult that instrument for detail.\n\n**Bottom line**\n\n- The Directive imposes a clear, time-limited duty on CL-600 series operators to adopt an approved CPCP, to carry out scheduled CPCP tasks, and to report and repair any corrosion discovered. The costs fall to operators (and their MRO contractors); the regulatory aim is to reduce corrosion-related airworthiness risk on aging aircraft. The directive is procedural and prescriptive rather than open-ended: it prescribes incorporation of a named program and ties corrective work to an existing Transport Canada AD."},"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This AD maintains its original narrow scope: mandating corrosion prevention for specific aircraft models. It does not expand beyond aviation safety into broader regulatory domains."},"complexity_factors":["Very short document (approximately 250 words)","Only 3 defined terms implicitly used (CPCP, MRB, Transport Canada AD)","No nested conditional logic or cross-references to other legislation","Single straightforward requirement with clear compliance dates","Minimal regulatory machinery — essentially adopts an existing Canadian (Transport Canada) standard by reference"],"plain_english_summary":"This is an **Airworthiness Directive (AD)** — a mandatory safety order issued by Australia's Civil Aviation Safety Authority (CASA). It requires owners and operators of specific Bombardier Challenger business jets to implement a formal **Corrosion Prevention and Control Program (CPCP)**.\n\n**What it does:**\n- Forces operators of CL-600 series aircraft (including CL-600, CL-601, and CL-601-3A/-3R models) to add Bombardier's official corrosion prevention program to their regular maintenance schedules\n- Requires corrosion-related maintenance tasks to be performed at specific intervals\n- Mandates that any corrosion found must be reported and fixed\n\n**Who it affects:**\n- Airlines, charter operators, and private owners of these specific Bombardier Challenger aircraft\n- Maintenance organisations servicing these planes\n\n**Why it matters:**\nAs aircraft age, metal fatigue and corrosion become serious safety risks. This directive ensures older Challenger jets receive systematic inspections to catch corrosion before it compromises structural integrity. The rule became mandatory from 9 June 2005, with operators given one year to comply unless they'd already implemented the program.\n\n**Key point:** Once an operator formally incorporates this corrosion program into their maintenance system, this specific directive is considered \"complete\" (terminating action) — though the ongoing maintenance obligations remain."}},"importantCases":[],"_links":{"self":"/api/acts/ad-cl-600-64-corrosion-prevention-and-control-program","history":"/api/acts/ad-cl-600-64-corrosion-prevention-and-control-program/history","analysis":"/api/acts/ad-cl-600-64-corrosion-prevention-and-control-program/analysis","conflicts":"/api/acts/ad-cl-600-64-corrosion-prevention-and-control-program/conflicts","importantCases":"/api/acts/ad-cl-600-64-corrosion-prevention-and-control-program/important-cases","documents":"/api/acts/ad-cl-600-64-corrosion-prevention-and-control-program/documents"}}