{"id":"F2006B10334","name":"AD/GY80/3 - Front Seats - Inspection and Modification","slug":"ad-gy80-3-front-seats-inspection-and-modification","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":56090,"registerId":"commonwealth-F2006B10334-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/GY80/3 - Front Seats - 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)  Aerospatiale GY 80 (Horizon) Series Aeroplanes\n\n \n\nAD/GY80/3 Front Seats - Inspection and Modification 3/72\n\nApplicability: All models.\n\n \n\nDocument: Sud Aviation SB No. 34.\n\n \n\nCompliance: Within 100 hours time in service after 31 May 1972.\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":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a discrete, single-issue safety directive from 1972. It has not expanded beyond its original narrow purpose of addressing a specific front seat safety issue in one aircraft type."},"complexity_factors":["Extremely short document — only 8 substantive lines","No defined terms section","No cross-references to other legislation beyond the parent Civil Aviation Regulations 1998","Single, clear compliance requirement with straightforward deadline","No conditional logic or exceptions","Simple applicability statement ('All models')","References only one external technical document (Sud Aviation SB No. 34)"],"plain_english_summary":"This is an **Airworthiness Directive (AD)** — essentially a mandatory safety order issued by Australia's Civil Aviation Safety Authority (CASA) for aircraft.\n\n**What it does:**\nOrders owners and operators of **Aerospatiale GY 80 (Horizon) series aeroplanes** to inspect and modify the front seats of their aircraft.\n\n**Who it affects:**\nAnyone who owns or operates any model of the Aerospatiale GY 80 aircraft — a French-built single-engine light aircraft from the 1960s–70s.\n\n**What must be done:**\n- **Inspection and modification** of front seats following the manufacturer's Service Bulletin No. 34 (a technical notice from Sud Aviation, the manufacturer).\n- **Deadline:** Within 100 hours of flying time after 31 May 1972.\n\n**Why it matters:**\nAirworthiness Directives are legally binding safety instructions. If you don't comply, your aircraft is not considered airworthy and cannot legally fly. This particular directive addresses a specific safety issue with the front seats — likely a structural or safety harness problem that could endanger occupants in flight or during an accident."},"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":false,"description":"The provided text contains a single definitive instruction: inspect and modify front seats per Sud Aviation SB No. 34 for all Aerospatiale GY 80 models, to be completed within 100 hours time-in-service after 31 May 1972. The excerpt does not indicate any amendment, narrowing, or expansion of that scope; therefore there is no evidence in this text that the scope has changed from the directive as presented."},"complexity_factors":["Directive text is short and clear about required action, model applicability and deadline (low complexity).","The AD relies on an external technical document (Sud Aviation SB No. 34) for the substantive inspection/modification steps (adds complexity because operators must obtain and follow that bulletin).","Compliance timing is measured in aircraft time-in-service relative to a fixed calendar date (31 May 1972), requiring operators to calculate hours-in-service accurately (moderate operational complexity).","No technical detail, cost estimate, or enforcement mechanics are included in the AD text (operators must infer recordkeeping and enforcement from regulatory practice).","Universal applicability to all models of the type increases the population of operators affected but does not complicate the instruction itself."],"plain_english_summary":"What this directive does, mechanically\n\n- This Airworthiness Directive (AD/GY80/3) requires operators of Aerospatiale GY 80 (Horizon) series aeroplanes to carry out an inspection and modification of the front seats.\n- The work must be done in accordance with Sud Aviation Service Bulletin No. 34 (Document: Sud Aviation SB No. 34).\n- The required action must be completed within 100 hours time-in-service after 31 May 1972 (Compliance: Within 100 hours time in service after 31 May 1972).\n\nWho it affects\n\n- All owners and operators of Aerospatiale GY 80 (Horizon) series aeroplanes (Applicability: All models).\n- The directive is issued under the Commonwealth Civil Aviation Regulations 1998, Part 39 framework administered by the Civil Aviation Safety Authority (header: Civil Aviation Regulations 1998, PART 39 - CIVIL AVIATION SAFETY AUTHORITY).\n\nWhy it matters (stated purpose and practical implications)\n\n- The instrument is an airworthiness directive, so its stated purpose is to require a specific inspection and modification to maintain or restore an acceptable level of airworthiness for the aircraft type. That purpose is embodied by the directive’s mandatory instruction to follow Sud Aviation SB No. 34 and the fixed compliance window.\n\nPractical effects, incentives and costs\n\n- Who pays: Owners/operators must arrange and pay for the inspection and any modifications required by the Sud Aviation service bulletin. (Document: Sud Aviation SB No. 34; Compliance: Within 100 hours time in service after 31 May 1972.)\n- What operators must do: Obtain Sud Aviation SB No. 34, schedule and perform the inspection/modification within the prescribed 100-hour window, and retain records of compliance. The AD prescribes the document to follow and the compliance deadline; it does not itself give technical steps beyond that reference.\n- Behaviour change: Operators may need to schedule maintenance earlier than planned, divert aircraft to a maintenance facility, or ground aircraft until the work is done. Those operational costs (downtime, labour, parts) are borne by operators.\n- Loss of discretion: The AD specifies the required standard (the service bulletin) and a deadline; operators have limited scope to modify the required action except by following the referenced SB or seeking approval for alternative means of compliance from the regulator (the AD itself does not set out alternative approvals).\n\nTrade-offs, compliance burden and implementation risks\n\n- Compliance burden: The AD is concise but depends on an external technical document (Sud Aviation SB No. 34). The amount of time, cost and parts required is determined by that bulletin, which operators must obtain and follow.\n- Timing constraint: The compliance requirement is tied to a fixed date (31 May 1972) and a short window measured in service hours, which creates a scheduling pressure for operators who must count time-in-service against the deadline.\n- Enforcement and discretion: The AD text specifies the requirement and the referenced document but does not detail enforcement procedures or penalties in this excerpt. Enforcement normally follows civil aviation regulatory processes, but the AD itself here does not state those mechanics.\n- Opportunity costs and choices: Operators facing the required work may choose between performing the modification, temporarily withdrawing aircraft from service, or seeking regulatory relief; the AD’s mandatory nature and deadline constrain those choices.\n\nWhere the directive leaves questions\n\n- The AD does not include the technical steps, parts lists, or labour estimates; operators must consult Sud Aviation SB No. 34 for the full technical instructions (Document: Sud Aviation SB No. 34).\n- The AD does not specify how compliance will be evidenced or recorded in this excerpt; normal practice would be maintenance entries and AD compliance records, but those details are not set out here.\n\nKey source citations\n\n- Applicability: \"All models.\" (Applicability)\n- Required document: \"Sud Aviation SB No. 34.\" (Document)\n- Compliance deadline: \"Within 100 hours time in service after 31 May 1972.\" (Compliance)\n- Issuing framework: \"COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - CIVIL AVIATION SAFETY AUTHORITY\" (header)\n"}},"importantCases":[],"_links":{"self":"/api/acts/ad-gy80-3-front-seats-inspection-and-modification","history":"/api/acts/ad-gy80-3-front-seats-inspection-and-modification/history","analysis":"/api/acts/ad-gy80-3-front-seats-inspection-and-modification/analysis","conflicts":"/api/acts/ad-gy80-3-front-seats-inspection-and-modification/conflicts","importantCases":"/api/acts/ad-gy80-3-front-seats-inspection-and-modification/important-cases","documents":"/api/acts/ad-gy80-3-front-seats-inspection-and-modification/documents"}}