{"id":"F2006B07483","name":"AD/TSA-600/18 - Main Landing Gear Clamshell - Door Placard - Replacement","slug":"ad-tsa-600-18-main-landing-gear-clamshell-door-placard-replacement","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":49916,"registerId":"commonwealth-F2006B07483-current","compilationNumber":null,"startDate":"2026-04-02","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/TSA-600/18 - Main Landing Gear Clamshell - Door Placard - Replacement","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)  Aerostar (Piper/Ted Smith) 600 and 700 Series Aeroplanes\n\n \n\n# AD/TSA-600/18 Main Landing Gear Clamshell - Door\n\nPlacard - Replacement Applicability: All models 600, 601 and 601P with Sequence Nos. prior to 0506. Document:               Piper Aerostar SL No. SL600-57.\n\n# 12/78\n\nCompliance: Unless already accomplished within 100 hours time in service after 31 December 1978.\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\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":2127},"content_quality":"ok","complexity_score":1,"scope_assessment":{"changed":false,"description":"This is a targeted, single-issue safety directive concerning one specific component on specific aircraft models. The scope remains strictly limited to the original purpose of ensuring proper placarding on main landing gear doors for the affected Aerostar aircraft."},"complexity_factors":["Single, unambiguous requirement (replace one placard)","No interpretation section or defined terms","Limited applicability restricted to three specific aircraft models and a serial number cut-off","Simple compliance condition based on flight hours and a fixed calendar date","Only one external reference (to a manufacturer Service Letter)"],"plain_english_summary":"**What it does**\nThis Airworthiness Directive (a legally binding safety order issued by the aviation regulator) requires owners and operators of specific Piper Aerostar aircraft to replace a placard — an instructional or warning label — located on the main landing gear clamshell door.\n\n**Who it affects**\nAnyone operating Piper Aerostar models 600, 601, and 601P with serial numbers (called \"Sequence Nos.\") prior to 0506.\n\n**What must be done**\nThe placard on the main landing gear clamshell door must be replaced following the instructions in Piper Aerostar Service Letter No. SL600-57.\n\n**Compliance deadline**\nThe work had to be completed within 100 hours of flight time after 31 December 1978, unless already accomplished.\n\n**Why it matters**\nThis ensures critical safety information or warnings about the landing gear remain visible and legible to pilots and maintenance crews, preventing potential operational errors."}},"importantCases":[],"_links":{"self":"/api/acts/ad-tsa-600-18-main-landing-gear-clamshell-door-placard-replacement","history":"/api/acts/ad-tsa-600-18-main-landing-gear-clamshell-door-placard-replacement/history","analysis":"/api/acts/ad-tsa-600-18-main-landing-gear-clamshell-door-placard-replacement/analysis","conflicts":"/api/acts/ad-tsa-600-18-main-landing-gear-clamshell-door-placard-replacement/conflicts","importantCases":"/api/acts/ad-tsa-600-18-main-landing-gear-clamshell-door-placard-replacement/important-cases","documents":"/api/acts/ad-tsa-600-18-main-landing-gear-clamshell-door-placard-replacement/documents"}}