{"id":"F2006B05409","name":"AD/PA-20/3 Amdt 6 - Wing Lift Strut Forks","slug":"ad-pa-20-3-amdt-6-wing-lift-strut-forks","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":46058,"registerId":"commonwealth-F2006B05409-current","compilationNumber":null,"startDate":"2026-04-02","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/PA-20/3 Amdt 6 - Wing Lift Strut Forks","content":"---\nmeta-content-style-type: text/css\nmeta-content-type: application/xhtml+xml; charset=utf-8\nmeta-generator: Aspose.Words for .NET 22.10.0\n---\n\n?xml version=\"1.0\" encoding=\"utf-8\" standalone=\"no\"?>\n\nCOMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY\n\nSCHEDULE OF AIRWORTHINESS DIRECTIVES\n\n \n\n![](image.001.png)  Piper PA-20 (Pacer) Series Aeroplanes\n\n \n\n# AD/PA-20/3\n\nAmdt 6\n\nApplicability: All models.\n\n# Wing Lift Strut Forks 5/95\n\n \n\nRequirement: 1. Install “No Step” Decal on starboard lift strut.\n\n \n\n2. Retire lift strut fork from service.\n\n \n\nInstallation of sealed lift struts in accordance with Piper mandatory Service Bulletin 528D cancels the retirement Requirement of this Directive (AD/PA-20/17 refers).\n\n \n\nFor those models which have a fairing over the front and rear strut lower ends, a single placard on the starboard fairing will suffice.\n\n \n\nNote: FAA AD 93-10-06 and Piper Service Bulletin 157D refer.\n\n \n\nCompliance: 1. Install placard before 50 hours time in service after 30 September 1986.\n\n \n\n2. Retire lift strut forks before the accumulation of 1000 hours time in service. This amendment is effective from 27 April 1995.\n\nBackground: This Amendment specifies the individual actions to be taken and provides for a terminating modification. the continuing airworthiness of these components is managed on a retirement life basis. It is no longer required to perform a magnetic particle inspection at the half life (500 hours).\n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n","sortOrder":0}],"analysis":{"kimi_summary":{"_metrics":{"model":"kimi-k2.5","source":"moonshot-batch","completionTokens":2050},"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":true,"description":"This amendment significantly alters the maintenance approach from a periodic inspection regime (requiring magnetic particle inspection at 500 hours time in service) to a life-limited retirement system (mandatory replacement at 1,000 hours with no intermediate inspections). While the safety objective remains constant, the regulatory method and compliance burden have fundamentally changed."},"complexity_factors":["Short, single-issue directive containing only two primary requirements","Minimal cross-referencing limited to one terminating modification (Piper SB 528D) and related FAA directive","Single conditional exception for aircraft with sealed strut modifications","Clear, quantitative compliance triggers (flight hours rather than subjective standards)"],"plain_english_summary":"Owners of Piper PA-20 Pacers must fit a \"No Step\" label to the starboard wing strut within 50 flight hours after 30 Sept 1986 and replace lift strut forks before they reach 1,000 flight hours to prevent strut failure and wing collapse. \n\nIf you install sealed lift struts per Piper SB 528D you are exempt from the 1,000‑hour fork retirement and must instead comply with AD/PA-20/17. This replaces prior 500‑hour magnetic‑particle inspections with a fixed life limit."}},"importantCases":[],"_links":{"self":"/api/acts/ad-pa-20-3-amdt-6-wing-lift-strut-forks","history":"/api/acts/ad-pa-20-3-amdt-6-wing-lift-strut-forks/history","analysis":"/api/acts/ad-pa-20-3-amdt-6-wing-lift-strut-forks/analysis","conflicts":"/api/acts/ad-pa-20-3-amdt-6-wing-lift-strut-forks/conflicts","importantCases":"/api/acts/ad-pa-20-3-amdt-6-wing-lift-strut-forks/important-cases","documents":"/api/acts/ad-pa-20-3-amdt-6-wing-lift-strut-forks/documents"}}