{"id":"F2006B10010","name":"AD/G1159/1 - Airspeed Limitation Placard - Rework","slug":"ad-g1159-1-airspeed-limitation-placard-rework","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":55370,"registerId":"commonwealth-F2006B10010-current","compilationNumber":null,"startDate":"2026-04-02","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/G1159/1 - Airspeed Limitation Placard - Rework","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)  Gulfstream (Grumman) G1159 and G-IV Series Aeroplanes\n\n \n\nAD/G1159/1 Airspeed Limitation Placard - Rework 8/71\n\nApplicability: All models with S/Nos. 1 to 101 and 775. Document:  Grumman Gulfstream II Service Change No. 99. Compliance:               Within 50 hours time in service after 27 July 1971.\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\n \n","sortOrder":0}],"analysis":{"kimi_summary":{"_metrics":{"model":"kimi-k2.5","source":"moonshot-batch","completionTokens":1979},"content_quality":"ok","complexity_score":1,"scope_assessment":{"changed":false,"description":"The directive maintains its original narrow scope—mandating a specific placard modification for identified aircraft. There is no expansion into broader operational or maintenance requirements beyond the original airworthiness safety intent."},"complexity_factors":["Single, unambiguous compliance requirement","No defined terms or interpretation sections","No nested conditions or exceptions","Minimal cross-referencing (only to the enabling Civil Aviation Regulations and one manufacturer document)"],"plain_english_summary":"**What this does:** This directive requires owners and operators of specific Gulfstream II business jets to modify or replace the aircraft’s airspeed limitation placards (the signs that tell pilots the maximum safe speeds for different flight conditions).\n\n**Who it affects:** Owners and operators of Gulfstream (Grumman) G1159 and G-IV series aeroplanes with serial numbers 1 through 101, plus serial number 775.\n\n**The requirement:** Operators must carry out the technical instructions in \"Grumman Gulfstream II Service Change No. 99\" within 50 hours of flying time after 27 July 1971.\n\n**Why it matters:** Accurate airspeed placards are essential for flight safety. Incorrect speed limits could lead to pilots exceeding safe operating speeds, risking loss of control or structural failure."}},"importantCases":[],"_links":{"self":"/api/acts/ad-g1159-1-airspeed-limitation-placard-rework","history":"/api/acts/ad-g1159-1-airspeed-limitation-placard-rework/history","analysis":"/api/acts/ad-g1159-1-airspeed-limitation-placard-rework/analysis","conflicts":"/api/acts/ad-g1159-1-airspeed-limitation-placard-rework/conflicts","importantCases":"/api/acts/ad-g1159-1-airspeed-limitation-placard-rework/important-cases","documents":"/api/acts/ad-g1159-1-airspeed-limitation-placard-rework/documents"}}