{"id":"F2006B10024","name":"AD/G1159/22 - Pitot-Static System Connections - Inspection","slug":"ad-g1159-22-pitot-static-system-connections-inspection","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":55413,"registerId":"commonwealth-F2006B10024-current","compilationNumber":null,"startDate":"2026-04-02","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/G1159/22 - Pitot-Static System Connections - Inspection","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/G1159/22 Pitot-Static System Connections - Inspection 12/77\n\nApplicability: All models.\n\n \n\nDocument: Customer Bulletin 251.\n\n \n\nCompliance: Within 200 hours time in service after 31 December 1977.\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\n \n","sortOrder":0}],"analysis":{"kimi_summary":{"_metrics":{"model":"kimi-k2.5","source":"moonshot-batch","completionTokens":1893},"content_quality":"ok","complexity_score":1,"scope_assessment":{"changed":false,"description":"This 1977 directive maintains its original narrow scope: a one-time inspection requirement for specific Gulfstream aircraft models. No evidence of scope expansion into unrelated systems or aircraft types."},"complexity_factors":["Extremely brief text (under 100 words)","No defined terms or interpretation section","Single, unambiguous compliance trigger (200 hours time-in-service after specified date)","No cross-references to other legislative provisions beyond enabling regulations","No exceptions, exemptions, or conditional logic"],"plain_english_summary":"This is a **mandatory safety inspection order** for owners and operators of Gulfstream G1159 and G-IV series aircraft (business jets).\n\n**What it requires:**\nYou must inspect the **pitot-static system connections** on your aircraft. The pitot-static system is the network of tubes and sensors that feed critical flight instruments like your airspeed indicator and altimeter. If these connections are loose or leaking, pilots get false readings—which can be deadly.\n\n**How to comply:**\n- **When:** Within 200 hours of flight time after 31 December 1977\n- **How:** Follow the instructions in Gulfstream **Customer Bulletin 251**\n\n**Why it matters:**\nFaulty pitot-static connections can cause catastrophic instrument failures. This directive ensures these critical connections are checked to prevent accidents caused by incorrect altitude or airspeed readings."}},"importantCases":[],"_links":{"self":"/api/acts/ad-g1159-22-pitot-static-system-connections-inspection","history":"/api/acts/ad-g1159-22-pitot-static-system-connections-inspection/history","analysis":"/api/acts/ad-g1159-22-pitot-static-system-connections-inspection/analysis","conflicts":"/api/acts/ad-g1159-22-pitot-static-system-connections-inspection/conflicts","importantCases":"/api/acts/ad-g1159-22-pitot-static-system-connections-inspection/important-cases","documents":"/api/acts/ad-g1159-22-pitot-static-system-connections-inspection/documents"}}