{"id":"F2009L02818","name":"AD/CL-600/113 - Passenger Door Corrosion","slug":"ad-cl-600-113-passenger-door-corrosion","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":80072,"registerId":"commonwealth-F2009L02818-current","compilationNumber":null,"startDate":"2026-04-02","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-600/113 | Passenger Door Corrosion | 8/2009 |\n| ------------- | ------------------------ | ------ |\n\n| Applicability: | Model CL-600-2B19 aircraft, serial numbers 7003 through 8089Model CL-600-2C10 aircraft, serial numbers 10003 through 10265Model CL-600-2D15 and CL-600-2D24 aircraft, serial numbers 15001 through 15173                                                                                                                                                                                                                                                                                                       |\n| -------------- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |\n| Requirement:   | Action in accordance with the requirements of Transport Canada AD CF-2009-23.                                                                                                                                                                                                                                                                                                                                                                                                                                  |\n| Compliance:    | Before the accumulation of 15,000 flight hours or within 5,000 flight hours after30 July 2009, whichever occurs later; unless already accomplished.                                                                                                                                                                                                                                                                                                                                                            |\n|                | This Airworthiness Directive becomes effective on 30 July 2009.                                                                                                                                                                                                                                                                                                                                                                                                                                                |\n| Background:    | Several cases of corrosion in lower structural members of the passenger door have been reported. It was subsequently determined that a drainage ramp (constructed from resin) had deteriorated with time and was retaining moisture. The ramp, therefore, requires removal, both to prevent further corrosion and to allow access to the door structure during future scheduled inspections. Corrosion left undetected could eventually affect the structural integrity of the door and surrounding structure. |\n\n![](image.001.png)  \nDavid Villiers  \nDelegate of the Civil Aviation Safety Authority\n\n18 June 2009","sortOrder":0},{"sectionNumber":"AD/CL-600/113","sectionType":"part","heading":"AD/CL-600/113","content":"## AD/CL-600/113","sortOrder":1},{"sectionNumber":"Passenger Door Corrosion","sectionType":"part","heading":"Passenger Door Corrosion","content":"## Passenger Door Corrosion","sortOrder":2},{"sectionNumber":"8/2009","sectionType":"part","heading":"8/2009","content":"## 8/2009","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"},"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a standard, narrow airworthiness directive addressing a specific safety-of-flight issue. It has not expanded beyond its original purpose of mandating corrective action for a known corrosion defect in specific aircraft models."},"complexity_factors":["Single, specific mechanical issue (passenger door corrosion)","Only 3 aircraft model variants affected with clearly defined serial number ranges","Single compliance action (removal of drainage ramp per Transport Canada AD CF-2009-23)","Simple compliance deadline formula (flight hours-based with clear alternative date trigger)","No nested exceptions, conditional logic, or cross-references to other legislation beyond the referenced Canadian directive","Document is 1 page with minimal defined terms"],"plain_english_summary":"This CASA Airworthiness Directive mandates owners/operators of certain Bombardier Challenger CL-600 series aircraft to remove a deteriorating resin drainage ramp from passenger doors to stop trapped moisture and prevent corrosion that could weaken door structure. It affects specified CL-600-2B19, -2C10, -2D15 and -2D24 serial ranges and must be done by 15,000 total flight hours or within 5,000 hours after 30 July 2009. It aligns with Transport Canada’s requirement."},"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":false,"description":"The directive mirrors Transport Canada’s corrective measures and targets reported corrosion of the passenger-door lower structure for specified CL-600 serial numbers. It confines remedial duties to affected aircraft and sets a clear compliance window, so scope aligns with addressing the identified drainage-ramp deterioration and resulting corrosion."},"complexity_factors":["Cross-reference to Transport Canada AD CF-2009-23: requires operators to obtain and apply an external instrument rather than listing steps in full.","Applicability limited by specific airframe models and narrow serial-number ranges, requiring operators to check fleet serials.","Compliance timing mixes calendar/economic decision with flight-hour thresholds (15,000 flight hours or within 5,000 hours after 30 July 2009).","Technical work involves removal of a resin drainage ramp and inspection/repair of lower door structure — requires maintenance access and possible corrosion repair expertise.","Cost and logistical burden fall on aircraft operators (inspection, removal, repair, downtime), with enforcement by the regulator (CASA).","Potential for interpretation variation about what constitutes 'action in accordance' with the referenced AD, increasing administrative/legal checking."],"plain_english_summary":"This Airworthiness Directive requires operators of specified Bombardier CL-600 series aircraft to follow the corrective actions set out in Transport Canada AD CF-2009‑23 (Requirement). It mandates removal of a deteriorated resin drainage ramp and inspections by the stated compliance deadline (Compliance) to prevent moisture-related corrosion of the passenger door structure. Operators pay for and perform the work; the regulator enforces compliance. Failure to act could degrade door structural integrity."}},"importantCases":[],"_links":{"self":"/api/acts/ad-cl-600-113-passenger-door-corrosion","history":"/api/acts/ad-cl-600-113-passenger-door-corrosion/history","analysis":"/api/acts/ad-cl-600-113-passenger-door-corrosion/analysis","conflicts":"/api/acts/ad-cl-600-113-passenger-door-corrosion/conflicts","importantCases":"/api/acts/ad-cl-600-113-passenger-door-corrosion/important-cases","documents":"/api/acts/ad-cl-600-113-passenger-door-corrosion/documents"}}