{"id":"F2009L00215","name":"AD/CL-600/104 Amdt 1 - Inboard Flap Actuator","slug":"ad-cl-600-104-amdt-1-inboard-flap-actuator","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":76680,"registerId":"commonwealth-F2009L00215-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-600/104 Amdt 1 | Inboard Flap Actuator | 3/2009 DM |\n| -------------------- | --------------------- | --------- |\n\n| Applicability: | Bombardier Inc. CL-600-2B19 aircraft.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                |\n| -------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ |\n| Requirement:   | Amend the Transport Canada approved maintenance schedule by incorporating the new inspection requirements of CMR Number C27-50-300-01, as introduced by Temporary Revision (TR) 2A-41 of Canadair Regional Jet Maintenance Requirements Manual (MRM), Appendix A, Certification Maintenance Requirements (CMR).Note: Transport Canada AD CF-2008-33R1 dated 9 January 2009 refers.                                                                                                                                                                                                   |\n| Compliance:    | Within 30 days after the effective date of this AD.Initial compliance with the new CMR task shall be carried out within 500 flight hours after the effective date of this AD.                                                                                                                                                                                                                                                                                                                                                                                                        |\n|                | This Amendment becomes effective on 9 February 2009.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 |\n| Background:    | During the acceptance test procedure of returned inboard flap actuators an excessive wear condition was identified regarding endplay between the flap actuator and ball screw. Excessive wear of the screw and ball nut could potentially lead to a flap system jam. A TR has been made to the Bombardier CL-600-2B19 Maintenance Requirements Manual Appendix A, CMR to ensure that unacceptable wear on the nut and ball screw is detected and corrected.This amendment reduces the initial compliance interval.The original issue of this AD became effective on 15 January 2009. |\n\n![](image.001.png)  \nJames Coyne  \nDelegate of the Civil Aviation Safety Authority\n\n23 January 2009","sortOrder":0},{"sectionNumber":"AD/CL-600/104 Amdt 1","sectionType":"part","heading":"AD/CL-600/104 Amdt 1","content":"## AD/CL-600/104 Amdt 1","sortOrder":1},{"sectionNumber":"Inboard Flap Actuator","sectionType":"part","heading":"Inboard Flap Actuator","content":"## Inboard Flap Actuator","sortOrder":2},{"sectionNumber":"3/2009 DM","sectionType":"part","heading":"3/2009 DM","content":"## 3/2009 DM","sortOrder":3}],"analysis":{"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This amendment maintains the original scope — addressing wear in inboard flap actuators on CL-600-2B19 aircraft. The amendment only adjusts the compliance timeline (making it shorter/more urgent), without expanding the aircraft types affected or the nature of the safety issue being addressed."},"complexity_factors":["Single, specific technical requirement (one inspection task)","Limited applicability (only one aircraft model: CL-600-2B19)","Clear, unambiguous compliance deadlines (30 days and 500 flight hours)","No nested exceptions or conditional logic","Only one cross-reference (to the Canadian Transport Canada AD CF-2008-33R1)","Short document with minimal defined terms (only standard aviation acronyms like CMR, MRM, TR)"],"plain_english_summary":"This AD requires Bombardier CL-600-2B19 operators to amend approved maintenance schedules and inspect inboard flap actuators after testing found excessive ball‑screw wear that could cause flaps to jam in flight. It shortens the original compliance time, making the update and follow‑up inspection effective sooner to reduce the immediate safety risk."},"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":true,"description":"This amendment shortens the initial compliance interval compared with the original AD (original effective 15 January 2009), and mandates incorporation of the new CMR inspection task into the approved maintenance schedule; it takes effect 9 February 2009."},"complexity_factors":["Narrow applicability: single aircraft type (Bombardier CL-600-2B19), limiting regulatory breadth but concentrating operational impact.","Mandate to amend an approved maintenance schedule, creating an administrative compliance step separate from performing inspections.","Two timing requirements: schedule amendment within 30 days and an initial inspection within 500 flight hours, requiring operational planning.","Technical requirements are delegated to external documents (CMR C27-50-300-01, TR 2A-41, MRM Appendix A), adding reliance on non-statutory manuals.","Potential for variable corrective action costs because unacceptable wear detection requires repair unspecified in the AD.","Cross-reference to Transport Canada AD CF-2008-33R1 introduces inter-jurisdictional regulatory linkage."],"plain_english_summary":"Requires Bombardier CL-600‑2B19 operators to amend their approved maintenance schedule to include a new inspection (CMR C27‑50‑300‑01 via TR 2A‑41) of the inboard flap actuator to detect wear between the ball screw and nut. Schedules must be updated within 30 days and the first inspection completed within 500 flight hours; operators bear inspection and any repair costs. The amendment cites the manufacturer’s maintenance manual and Transport Canada AD CF‑2008‑33R1 as the source of the inspection task."},"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"}},"importantCases":[],"_links":{"self":"/api/acts/ad-cl-600-104-amdt-1-inboard-flap-actuator","history":"/api/acts/ad-cl-600-104-amdt-1-inboard-flap-actuator/history","analysis":"/api/acts/ad-cl-600-104-amdt-1-inboard-flap-actuator/analysis","conflicts":"/api/acts/ad-cl-600-104-amdt-1-inboard-flap-actuator/conflicts","importantCases":"/api/acts/ad-cl-600-104-amdt-1-inboard-flap-actuator/important-cases","documents":"/api/acts/ad-cl-600-104-amdt-1-inboard-flap-actuator/documents"}}