{"id":"F2011L00678","name":"AD/PA-28/35 Amdt 2 - Main Landing Gear Torque Links","slug":"ad-pa-28-35-amdt-2-main-landing-gear-torque-links","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":86301,"registerId":"commonwealth-F2011L00678-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"Piper PA-28 Series Aeroplanes","sectionType":"division","heading":"Piper PA-28 Series Aeroplanes","content":"### Piper PA-28 Series Aeroplanes\n\n| AD/PA-28/35 Amdt 2 | Main Landing Gear Torque Links | 9/2011 |\n| ------------------ | ------------------------------ | ------ |\n\n| Applicability: | All models with fixed landing gear except those with torque link P/N 78032-00V or 78033-000.                                                                                                                                                                                                                                                                           |\n| -------------- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |\n| Requirement:   | Action in accordance with Piper Mandatory Service Bulletin No. 1199 or FAA AD 72-08-06.Note: FAA Special Airworthiness Information Bulletin CE-10-17 refers. FAA SAIBs may be accessed via the internet at the following URL:http://rgl.faa.gov                                                                                                                        |\n| Compliance:    | At intervals specified in Piper Mandatory Service Bulletin No. 1199 or FAA AD72-08-06.Previous compliance with Piper Service Letter No. 600 constitutes compliance with this Amendment.                                                                                                                                                                                |\n|                | This Amendment becomes effective on 13 May 2011.                                                                                                                                                                                                                                                                                                                       |\n| Background:    | Original issue of this AD specified compliance with Piper SL No. 600.Amendment 1 exempted aircraft with improved design of torque link assembly.Amendment 2 specifies Piper MSB No. 1199 which was published in February 2009 and supersedes Piper SL No. 600 in its entirety. A Note about SAIB CE-10-17 was added. The word “Inspection” was deleted from the title. |\n\n![](image.001.png)\n\nCharles Lenarcic  \nDelegate of the Civil Aviation Safety Authority\n\n29 April 2011","sortOrder":0},{"sectionNumber":"AD/PA-28/35 Amdt 2","sectionType":"part","heading":"AD/PA-28/35 Amdt 2","content":"## AD/PA-28/35 Amdt 2","sortOrder":1},{"sectionNumber":"Main Landing Gear Torque Links","sectionType":"part","heading":"Main Landing Gear Torque Links","content":"## Main Landing Gear Torque Links","sortOrder":2},{"sectionNumber":"9/2011","sectionType":"part","heading":"9/2011","content":"## 9/2011","sortOrder":3}],"analysis":{"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":true,"description":"Amendment 2 replaces the earlier Piper Service Letter No. 600 by specifying Piper Mandatory Service Bulletin No. 1199 (published Feb 2009) as the required reference for actions and intervals; Amendment 1 had previously exempted aircraft fitted with an improved torque link assembly. The amendment also adds a note referencing FAA SAIB CE-10-17 and removes the word “Inspection” from the title."},"complexity_factors":["Cross-references to external documents (Piper Mandatory Service Bulletin No. 1199 and FAA AD 72-08-06) which set substantive actions and intervals","Applicability carve-out by part numbers (exempts torque link P/N 78032-00V and 78033-000)","Compliance timing and requirements are defined in the external MSB/FAA AD rather than within the amendment itself","Acceptance of prior compliance with an earlier Piper Service Letter (No. 600) creates a legacy compliance pathway","Addition of a non-mandatory informational reference (FAA SAIB CE-10-17) increases material for operators to consult","Effective date specified (13 May 2011) creates a clear regulatory start point for enforcement"],"plain_english_summary":"This airworthiness directive requires owners/operators of Piper PA-28 series aeroplanes with fixed landing gear (except aircraft fitted with torque link P/N 78032-00V or 78033-000) to carry out the actions set out in Piper Mandatory Service Bulletin No. 1199 or FAA AD 72-08-06 for the main landing‑gear torque links. Compliance must occur at the intervals specified in those documents; earlier compliance with Piper Service Letter No. 600 is accepted. The operator bears the cost of inspections/repairs and must follow the externally referenced service material; the regulator set an effective date of 13 May 2011."},"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":2,"scope_assessment":{"changed":false,"description":"This amendment remains tightly focused on its original purpose: ensuring airworthiness of PA-28 landing gear torque links. While it updates the technical reference (from Service Letter to Mandatory Service Bulletin), this represents refinement of existing safety requirements rather than scope expansion. The exemption for improved torque link designs was already present in Amendment 1."},"complexity_factors":["Very short document (under 300 words)","Only 2 defined exceptions (specific part numbers exempted)","Single primary compliance pathway with one alternative (FAA AD reference)","No nested conditional logic or cross-references to other legislation","Straightforward applicability statement with clear exclusion","Background section provides plain explanation of amendment history"],"plain_english_summary":"This CASA Airworthiness Directive requires owners/operators of Piper PA‑28 fixed‑gear aircraft (unless fitted with improved torque links 78032‑00V/78033‑000) to carry out recurring inspections and maintenance of main landing‑gear torque links per Piper Mandatory Service Bulletin No. 1199 or an FAA equivalent. It closes a safety gap that can lead to gear collapse and, in Amendment 2, replaces older guidance while retaining compliance credit for Service Letter No. 600."}},"importantCases":[],"_links":{"self":"/api/acts/ad-pa-28-35-amdt-2-main-landing-gear-torque-links","history":"/api/acts/ad-pa-28-35-amdt-2-main-landing-gear-torque-links/history","analysis":"/api/acts/ad-pa-28-35-amdt-2-main-landing-gear-torque-links/analysis","conflicts":"/api/acts/ad-pa-28-35-amdt-2-main-landing-gear-torque-links/conflicts","importantCases":"/api/acts/ad-pa-28-35-amdt-2-main-landing-gear-torque-links/important-cases","documents":"/api/acts/ad-pa-28-35-amdt-2-main-landing-gear-torque-links/documents"}}