{"id":"F2006B02298","name":"AD/AL 60/2 - Air Throttle/Waste Gate Coordinator - Modification","slug":"ad-al-60-2-air-throttle-waste-gate-coordinator-modification","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":41528,"registerId":"commonwealth-F2006B02298-current","compilationNumber":null,"startDate":"2026-04-01","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/AL 60/2 - Air Throttle/Waste Gate Coordinator - 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)  Aermacchi - Lockheed AL 60 Series Aeroplanes\n\n \n\nAD/AL 60/2 Air Throttle/Waste Gate Coordinator - Modification 6/63\n\nApplicability: All models equipped with Continental TSIO-470-B engine. Document:  Aermacchi Lockheed 60 Mod. Bulletin No. 2.\n\nCompliance: Before 1 September 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":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a discrete, time-bound airworthiness directive from 1963 (as indicated by the '6/63' suffix). It has not grown beyond its original scope — it addresses one specific technical modification for one specific aircraft engine combination. The document represents the complete directive as issued."},"complexity_factors":["Extremely short document — essentially a single paragraph directive","Only one defined applicability criterion (Continental TSIO-470-B engine)","Single compliance action referencing an external technical document (Modification Bulletin No. 2)","No nested conditions, exceptions, or cross-references to other legislation","Clear deadline (before 1 September 1971)","No interpretive provisions or definitions section"],"plain_english_summary":"This is an **Airworthiness Directive (AD)** — essentially a mandatory safety order issued by Australia's Civil Aviation Safety Authority (CASA) under the Civil Aviation Regulations 1988.\n\n**What it does:**\nIt requires owners and operators of specific Aermacchi-Lockheed AL 60 series aircraft to modify the \"Air Throttle/Waste Gate Coordinator\" — a component that manages engine turbocharger boost pressure and throttle coordination.\n\n**Who it affects:**\n- Owners and operators of **all Aermacchi-Lockheed AL 60 models** fitted with a **Continental TSIO-470-B engine**\n- This is a specific piston engine with turbocharging (the \"TSIO\" stands for Turbocharged, Fuel Injected, Opposed cylinder configuration)\n\n**What must be done:**\nOperators must carry out the modification described in **Aermacchi Lockheed Modification Bulletin No. 2** before **1 September 1971**.\n\n**Why it matters:**\nAirworthiness Directives are legally enforceable safety mandates. Non-compliance means the aircraft cannot be considered airworthy and cannot legally fly. This particular AD addresses a specific technical issue with the throttle/waste gate coordination system that, if unaddressed, could affect engine performance or safety."},"flash_summary":{"complexity_score":2,"scope_assessment":{"changed":false,"description":"The supplied text sets a clear, narrow scope: it applies to all AL 60 series aeroplanes fitted with the Continental TSIO-470-B engine and requires the modification described in the referenced Mod. Bulletin to be completed by a fixed date (see Applicability; Document; Compliance). The directive contains no language indicating a change from an earlier or broader scope within the supplied text, and no amendments or scope-expanding provisions are included."},"complexity_factors":["Narrow applicability: applies only to AL 60 series aeroplanes fitted with Continental TSIO-470-B engines (\"Applicability: All models equipped with Continental TSIO-470-B engine\").","Single concrete action: mandates a specific modification to the air throttle/waste gate coordinator.","External technical reference: requires following a separate document for details (\"Aermacchi Lockheed 60 Mod. Bulletin No. 2\").","Fixed compliance deadline introduces scheduling pressure (\"Compliance: Before 1 September 1971\").","Lack of stated exemptions or alternative compliance paths in the supplied text increases operational rigidity.","No technical details in the AD itself — requires consulting the Mod. Bulletin to determine exact parts, tasks and labour."],"plain_english_summary":"### What this directive does\n\nThis airworthiness directive (AD/AL 60/2) requires a physical modification to the air throttle/waste gate coordinator on Aermacchi–Lockheed AL 60 series aeroplanes that are fitted with a Continental TSIO-470-B engine. The required work is to be carried out in accordance with the maintenance instruction referenced as \"Aermacchi Lockheed 60 Mod. Bulletin No. 2\" (\"Document: Aermacchi Lockheed 60 Mod. Bulletin No. 2\"). The directive sets a deadline for compliance: the modification must be completed before 1 September 1971 (\"Compliance: Before 1 September 1971\").\n\n### Who is affected\n\nOwners and operators of AL 60 series aeroplanes fitted with the Continental TSIO-470-B engine are the parties required to have the modification done (\"Applicability: All models equipped with Continental TSIO-470-B engine\").\n\n### How it works mechanically\n\n- The AD identifies the affected fleet by engine type (see Applicability).  \n- It tells those operators to follow the separate modification instruction (the referenced Mod. Bulletin) to change the air throttle/waste gate coordinator (see Document).  \n- It imposes a firm date by which the work must be completed (see Compliance).\n\n### Costs, incentives and compliance burden\n\n- Who pays: the directive places the cost and operational burden of the modification on the owners/operators of the affected aircraft (inferred from the Applicability and Compliance requirements).  \n- Work required: the precise technical steps and parts are provided in the referenced Mod. Bulletin; operators must obtain and follow that bulletin (see Document).  \n- Timing pressure: the fixed deadline requires operators to plan for parts, labour and any downtime before the stated date (see Compliance).  \n\n### Discretion, enforcement and uncertainties\n\n- The text supplied contains no exemption, staged-compliance option or enforcement mechanism; it simply states applicability, the reference document and a deadline (see Applicability, Document, Compliance).  \n- The AD does not, in the supplied text, state the specific problem the modification addresses or quantify the safety or economic trade-offs—only the action required is recorded.\n\n### Practical trade-offs and implementation risks\n\n- Implementation depends on availability of the Mod. Bulletin and on the operator's ability to obtain parts and skilled labour; the bulletin is the operative technical specification for compliance (see Document).  \n- Because the AD refers out to a separate technical bulletin for the details, questions about scope of work, parts supply and cost must be resolved by consulting that bulletin and by operators arranging the modification before the deadline (see Document; Compliance)."}},"importantCases":[],"_links":{"self":"/api/acts/ad-al-60-2-air-throttle-waste-gate-coordinator-modification","history":"/api/acts/ad-al-60-2-air-throttle-waste-gate-coordinator-modification/history","analysis":"/api/acts/ad-al-60-2-air-throttle-waste-gate-coordinator-modification/analysis","conflicts":"/api/acts/ad-al-60-2-air-throttle-waste-gate-coordinator-modification/conflicts","importantCases":"/api/acts/ad-al-60-2-air-throttle-waste-gate-coordinator-modification/important-cases","documents":"/api/acts/ad-al-60-2-air-throttle-waste-gate-coordinator-modification/documents"}}