{"id":"F2009L03718","name":"AD/BELL 206/176 Amdt 1 - Cyclic Control Lever Assembly Installation","slug":"ad-bell-206-176-amdt-1-cyclic-control-lever-assembly-installation","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":141581,"registerId":"commonwealth-F2009L03718-current","compilationNumber":null,"startDate":"2026-04-03","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"Bell Helicopter Textron Canada (BHTC) 20","sectionType":"division","heading":"Bell Helicopter Textron Canada (BHTC) 206 and Agusta Bell 206 Series Helicopters","content":"### Bell Helicopter Textron Canada (BHTC) 206 and Agusta Bell 206 Series Helicopters\n\n| AD/BELL 206/176 Amdt 1 | Cyclic Control Lever Assembly Installation | 12/2009 DM |\n| ---------------------- | ------------------------------------------ | ---------- |\n\n| Applicability: | Model 206A helicopters, all serial numbers.Model 206B series helicopters, all serial numbers, including those converted from Model 206A.Bell 206L series helicopters, all serial numbers.                                                                                                                                                                                                                                                                                                                                                            |\n| -------------- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |\n| Requirement:   | For helicopters with less than 50 flight hours in service or with a cyclic lever assembly installed within the last 50 flight hours:Perform a one time inspection and if required, rectification, of the cyclic lever assembly installation, in accordance with accomplishment instructions provided in Bell Alert Service bulletin 206-09-121 Revision C, dated 7 July 2009 (For Models 206A and 206B) or Bell Alert Service bulletin 206L-09-155 dated 10 March 2009, as applicable.Note: Transport Canada AD CF-2009-10R1 refers.                 |\n| Compliance:    | Within 10 flight hours after 30 September 2009, but no later than 30 calendar days after the effective date of this Directive; unless already accomplished.                                                                                                                                                                                                                                                                                                                                                                                          |\n|                | This Amendment becomes effective on 30 September 2009.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               |\n| Background:    | An incorrectly installed bearing Part Number 206-301-051-101, in the co-pilot cyclic control lever assembly has been discovered during manufacturing. It is possible, that an incorrectly installed bearing could be found in any aircraft with a recently installed cyclic control lever assembly.Amendment 1 is issued in response to a new Transport Canada AD, which requires compliance with Revision C of ASB 206-09-121 as the original issue did not list inspection of the bearing installed on lever assembly part number 206-001-339-015. |\n\n![](image.001.png)  \nDavid Villiers  \nDelegate of the Civil Aviation Safety Authority\n\n28 September 2009","sortOrder":0},{"sectionNumber":"AD/BELL 206/176 Amdt 1","sectionType":"part","heading":"AD/BELL 206/176 Amdt 1","content":"## AD/BELL 206/176 Amdt 1","sortOrder":1},{"sectionNumber":"Cyclic Control Lever Assembly Installati","sectionType":"part","heading":"Cyclic Control Lever Assembly Installation","content":"## Cyclic Control Lever Assembly Installation","sortOrder":2},{"sectionNumber":"12/2009 DM","sectionType":"part","heading":"12/2009 DM","content":"## 12/2009 DM","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":3,"scope_assessment":{"changed":true,"description":"Amendment 1 broadened the required inspection by adding the bearing installed on the cyclic lever assembly (a part not listed in the original bulletin). It aligns the Directive with a new Transport Canada AD and requires compliance with ASB Revision C, thereby expanding the specific components and procedures subject to mandatory inspection/rectification."},"complexity_factors":["Technical specificity: references a particular bearing and cyclic lever assembly installation which requires a hands‑on inspection.","Applicability criteria: limited to Model 206A/B/L helicopters and to assemblies with <50 flight hours or recently installed assemblies.","Reliance on external documents: compliance requires following Bell Alert Service Bulletins (including ASB 206-09-121 Revision C / 206L-09-155) and a Transport Canada AD reference.","Time‑limited compliance: short compliance window (within 10 flight hours after 30 Sep 2009 or within 30 calendar days of the effective date).","Operational burden: inspection/rectification may need qualified maintenance, parts procurement and aircraft downtime.","Amendment effect: changes prior instructions by adding an inspection item (bearing on a specified lever assembly), expanding the actionable scope of the original bulletin."],"plain_english_summary":"This Directive requires owners/operators of Bell 206A, 206B and 206L helicopters with a cyclic lever assembly less than 50 flight-hours (or installed within the last 50 hours) to perform a one‑time inspection and any necessary rectification of the cyclic control lever installation, following Bell Alert Service Bulletins (including Revision C). It targets a potentially incorrectly installed bearing discovered in manufacturing. Operators must complete the work within 10 flight hours or 30 days of the effective date and will bear inspection and repair costs, using qualified maintenance and any needed spare parts."},"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This amendment remains tightly focused on the original safety purpose — inspecting cyclic control lever assemblies for incorrect bearing installation. Amendment 1 simply expands the inspection to cover an additional bearing part number (206-001-339-015) that was inadvertently omitted from the original directive. The scope has not grown beyond the specific mechanical safety issue."},"complexity_factors":["Single, specific mechanical inspection requirement","Clear applicability criteria based on flight hours and model numbers","Straightforward compliance timeline (10 flight hours or 30 days)","Only two alternative service bulletins referenced","No nested exceptions or conditional logic chains","Limited defined terms (standard aviation terminology only)"],"plain_english_summary":"This CASA Airworthiness Directive requires owners/operators of Bell 206A/B/L helicopters (those with <50 flight hours or with a recently installed cyclic lever) to perform a one‑time inspection of the cyclic control lever assembly to verify a specific bearing was installed correctly and rectify any defects. Compliance is required within 10 flight hours after 30 Sep 2009 or within 30 days of the AD taking effect. Amendment 1 adds an additional bearing part number missed in the original directive."}},"importantCases":[],"_links":{"self":"/api/acts/ad-bell-206-176-amdt-1-cyclic-control-lever-assembly-installation","history":"/api/acts/ad-bell-206-176-amdt-1-cyclic-control-lever-assembly-installation/history","analysis":"/api/acts/ad-bell-206-176-amdt-1-cyclic-control-lever-assembly-installation/analysis","conflicts":"/api/acts/ad-bell-206-176-amdt-1-cyclic-control-lever-assembly-installation/conflicts","importantCases":"/api/acts/ad-bell-206-176-amdt-1-cyclic-control-lever-assembly-installation/important-cases","documents":"/api/acts/ad-bell-206-176-amdt-1-cyclic-control-lever-assembly-installation/documents"}}