{"id":"F2006B02026","name":"AD/AA-1/15 - Centre Spar Console - Inspection and Modification","slug":"ad-aa-1-15-centre-spar-console-inspection-and-modification","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":41248,"registerId":"commonwealth-F2006B02026-current","compilationNumber":null,"startDate":"2026-04-01","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/AA-1/15 - Centre Spar Console - Inspection and Modification","content":"---\nmeta-content-style-type: text/css\nmeta-content-type: application/xhtml+xml; charset=utf-8\nmeta-description: CASA Airworthiness Directive\nmeta-generator: Aspose.Words for .NET 22.10.0\nmeta-keywords: Issue 12/1975,Aircraft below 5700 kg,Gulfstream (Grumman American/ American Aviation) AA-1 Series Aeroplanes,Centre Spar Console - Inspection and Modification,15\ntitle: Airworthiness Directive - AD/AA-1/15 - Centre Spar Console - Inspection and Modification\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 American/ American Aviation) AA-1 Series Aeroplanes\n\n \n\nAD/AA-1/15 Centre Spar Console - Inspection and Modification 12/75\n\nApplicability: All models AA-1 and AA-1A with S/Nos. AA-B-001 to AA1B-0538. Document:  Grumman American Aviation SB No. 151.\n\nCompliance: Within 100 hours’ time in service after 30 January 1976.\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":1533},"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This directive maintains its original narrow scope: addressing a specific structural safety issue (centre spar console) on specific Gulfstream AA-1 aircraft models. It has not expanded beyond this original technical safety purpose."},"complexity_factors":["Extremely brief directive (approximately 50 words of substantive content)","Specific applicability limited to exact aircraft models and serial number range","Single external technical reference (Service Bulletin No. 151) containing actual procedures","Single unconditional compliance deadline based on flight hours","No defined terms, exceptions, or conditional logic"],"plain_english_summary":"**What this is:** A mandatory safety order for owners of specific light aircraft.\n\n**Who it affects:** Owners and operators of **Gulfstream AA-1 and AA-1A aircraft** with serial numbers from AA-B-001 to AA1B-0538.\n\n**What you must do:**\n*   Inspect and modify the **centre spar console** (a structural component in the middle of the aircraft)\n*   Follow the technical procedures outlined in **Grumman American Aviation Service Bulletin No. 151**\n*   Complete the work within **100 hours of flight time** after 30 January 1976\n\n**Why it matters:** This ensures the aircraft's structural integrity remains safe. Operating the aircraft without completing this modification would violate airworthiness requirements and ground the aircraft."}},"importantCases":[],"_links":{"self":"/api/acts/ad-aa-1-15-centre-spar-console-inspection-and-modification","history":"/api/acts/ad-aa-1-15-centre-spar-console-inspection-and-modification/history","analysis":"/api/acts/ad-aa-1-15-centre-spar-console-inspection-and-modification/analysis","conflicts":"/api/acts/ad-aa-1-15-centre-spar-console-inspection-and-modification/conflicts","importantCases":"/api/acts/ad-aa-1-15-centre-spar-console-inspection-and-modification/important-cases","documents":"/api/acts/ad-aa-1-15-centre-spar-console-inspection-and-modification/documents"}}