{"id":"F2006B10101","name":"AD/G164/16 Amdt 1 - Rear Fuselage Extension - Inspection and Modification","slug":"ad-g164-16-amdt-1-rear-fuselage-extension-inspection-and-modification","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":55602,"registerId":"commonwealth-F2006B10101-current","compilationNumber":null,"startDate":"2026-04-02","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/G164/16 Amdt 1 - Rear Fuselage Extension - Inspection and Modification","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)  Schweizer (Grumman) G-164 (Ag-Cat) Series Aeroplanes\n\n \n\nAD/G164/16\n\nAmdt 1\n\n\nRear Fuselage Extension - Inspection and Modification\n\n\n1/84\n\n \n\nApplicability: All model G164B with S/Nos. 01B thru 659B. Document: Schweizer AG-CAT Service Bulletin No. 59 Rev. A.\n\nCompliance: Unless already accomplished within 100 hours time in service after 31 January 1984 or at the next scheduled inspection for maintenance release issue after 31 January 1984 whichever is the later.\n\n \n\nBackground: This Directive is raised in issue to include additional aircraft S/N applicability.\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":1478},"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":true,"description":"This Amendment 1 expanded the scope of the original directive to include additional aircraft serial numbers (specifically S/N 01B thru 659B), broadening coverage to capture more G-164B aircraft that required the safety modification."},"complexity_factors":["Single operative provision requiring one specific inspection and modification","Limited applicability to one aircraft model and defined serial number range only","No defined terms, interpretation sections, or nested legislative cross-references","Simple binary compliance deadline using basic 'whichever is later' logic"],"plain_english_summary":"Owners/operators of Schweizer (formerly Grumman) G-164B Ag-Cat aircraft (serials 01B–659B) must inspect and modify the rear fuselage extension per Schweizer Service Bulletin No. 59 Rev. A.\n\nThis Airworthiness Directive (Amendment 1) expands the affected serial range and requires the work within 100 flight hours after Jan 31, 1984, or at the next scheduled check (whichever is later) to prevent rear-fuselage structural failures."}},"importantCases":[],"_links":{"self":"/api/acts/ad-g164-16-amdt-1-rear-fuselage-extension-inspection-and-modification","history":"/api/acts/ad-g164-16-amdt-1-rear-fuselage-extension-inspection-and-modification/history","analysis":"/api/acts/ad-g164-16-amdt-1-rear-fuselage-extension-inspection-and-modification/analysis","conflicts":"/api/acts/ad-g164-16-amdt-1-rear-fuselage-extension-inspection-and-modification/conflicts","importantCases":"/api/acts/ad-g164-16-amdt-1-rear-fuselage-extension-inspection-and-modification/important-cases","documents":"/api/acts/ad-g164-16-amdt-1-rear-fuselage-extension-inspection-and-modification/documents"}}