{"id":"F2006B08920","name":"AD/DH114/10 Amdt 1 - Flying Control Hinge Brackets - Inspection","slug":"ad-dh114-10-amdt-1-flying-control-hinge-brackets-inspection","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":52472,"registerId":"commonwealth-F2006B08920-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/DH114/10 Amdt 1 - Flying Control Hinge Brackets - 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)  DH114 (Heron) Series Aeroplanes\n\n \n\nAD/DH114/10\n\nAmdt 1\n\n\nFlying Control Hinge Brackets - Inspection NK\n\n \n\nApplicability: All models.\n\n \n\nDocument: Hawker Siddeley TNS Heron (114) No. CF.1, Issue 4.\n\n \n\nCompliance: As detailed in requirement document, with effect from 31 August 1970.\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":{"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":true,"description":"This instrument is labelled as an amendment (Amdt 1) to AD/DH114/10, which indicates a change from the original AD. The text provided does not specify the prior wording or the nature of the change; instead it reiterates the inspection requirement and delegates technical detail to Hawker Siddeley TNS Heron (114) No. CF.1, Issue 4. From the excerpt alone, the document shows that scope or procedure was altered by issuing an amendment, but the precise substantive change to scope or requirements cannot be determined without comparing this text to the original AD or inspecting the referenced requirement document."},"complexity_factors":["Brevity of the AD text: the directive states the requirement but contains no technical detail (increases practical complexity for implementers). (Compliance)","Delegation to an external requirement document (Hawker Siddeley No. CF.1, Issue 4) that contains the operative technical instructions — implementers must obtain and follow that document. (Document)","Broad scope wording: applicability to \"all models\" increases the population affected and may increase logistical complexity. (Applicability)","Lack of in-text operational details (no intervals, acceptance criteria, or remedial steps), which shifts interpretive and administrative burden to operators and the referenced document. (Compliance; Document)","Historical effective date (31 August 1970) — the age of the directive may create archival or availability issues for the requirement document or legacy records. (Compliance)","Regulatory placement under Part 39 (AD framework) implies formal enforcement mechanisms, adding compliance and potential administrative procedures. (Header: Civil Aviation Regulations 1998, Part 39)"],"plain_english_summary":"What this instrument does, mechanically\n\n- This airworthiness directive (AD/DH114/10 Amdt 1) requires inspection of the flying control hinge brackets on the DH114 (Heron) series aeroplanes. (Title; Applicability)\n- The AD applies to all models of the type. (Applicability)\n- The mandatory inspection procedure and any specific requirements are not written out in the text of the directive itself; compliance is to be carried out “as detailed in [the] requirement document” — namely Hawker Siddeley TNS Heron (114) No. CF.1, Issue 4. (Document; Compliance)\n- The compliance obligation takes effect from 31 August 1970. (Compliance)\n\nWho this affects and who decides\n\n- Aircraft operators and owners of DH114 (Heron) series aeroplanes are the parties who will have to carry out the inspections and any corrective work that results. (Applicability; Compliance)\n- The Civil Aviation Safety Authority (CASA), under the Part 39 airworthiness-directive framework, issues the AD and enforces compliance; the AD delegates the technical detail of what to do to the referenced requirement document. (Header: Civil Aviation Regulations 1998, Part 39; Document)\n\nWhy it matters (stated purpose and practical consequences)\n\n- The directive mandates inspection of a specific control-system component (hinge brackets). The text provided does not include an explanatory memorandum or a justification statement; the practical purpose of ADs is generally to manage identified airworthiness risks, but that rationale is not set out in this excerpt. (Title; Document)\n- Mechanically, this changes the behaviour of aircraft operators: they must follow the referenced procedure and schedule inspections from the effective date. If defects are found, operators will need to repair or replace components to comply. (Compliance)\n\nCosts, incentives, trade-offs and implementation risks (source-grounded)\n\n- Who pays: the operator/owner pays for inspections, labour, parts and any aircraft downtime caused by inspections or repairs, because the AD obliges compliance but does not allocate funding. (Applicability; Compliance)\n- Information and discretion: the AD refers to a separate requirement document for the technical steps and intervals. That delegation concentrates technical discretion and implementation detail in the requirement document (Hawker Siddeley No. CF.1, Issue 4). If that document is unclear or unavailable, operators face implementation risk and uncertainty about compliance. (Document; Compliance)\n- Compliance burden: the AD creates a regulatory compliance task (perform inspections as required). The text does not specify inspection intervals, pass/fail criteria, or penalty mechanisms; those items are in the referenced document. As a result, administrative and operational costs depend on the absent details. (Compliance; Document)\n- Effects on private choice and operations: operators must schedule and resource inspections, which may affect aircraft availability and maintenance planning. If inspections identify defects, operators face repair costs and possible replacement of parts. (Applicability; Compliance)\n- Concentrated benefits and diffuse costs: the directive targets a specific safety-related component. The immediate safety benefit (if any) accrues to aircraft operators, crews and passengers; the direct costs are concentrated on those same operators through inspection and repair expenses. The text does not quantify benefits or costs. (Title; Applicability)\n\nWhat the instrument does not specify (and where to look)\n\n- This AD does not itself set out inspection methods, intervals, acceptance criteria, or remedial actions; it defers those to the referenced Hawker Siddeley requirement document (No. CF.1, Issue 4). (Document; Compliance)\n- The directive gives an effective date but no transitional or enforcement detail in the excerpt provided. (Compliance)\n\nPractical takeaway\n\n- Owners/operators of DH114 Heron aircraft must follow the inspection requirements in Hawker Siddeley TNS Heron (114) No. CF.1, Issue 4 from 31 August 1970; the AD creates a binding obligation enforced under the Part 39 AD framework while delegating the technical specifics to the referenced document. (Applicability; Document; Compliance)"},"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a standard Airworthiness Directive maintaining its original purpose: mandating safety inspections for a specific aircraft type. The scope remains precisely targeted at DH114 Heron flying control hinge brackets, with no evidence of scope creep or expansion beyond this specific technical safety issue."},"complexity_factors":["Extremely short document (under 200 words)","No defined terms section — uses plain aviation terminology","Single, straightforward requirement: inspect specific components per referenced document","No conditional logic, exceptions, or nested provisions","Simple applicability clause ('All models')","Single cross-reference to external technical document (Hawker Siddeley TNS)","No penalty provisions, enforcement mechanisms, or dispute resolution clauses included in text"],"plain_english_summary":"This is an **Airworthiness Directive (AD)** — essentially a mandatory safety notice issued by Australia's Civil Aviation Safety Authority (CASA) for aircraft.\n\n**What it does:**\nOrders owners and operators of **DH114 Heron series aeroplanes** (a British-made twin-engine aircraft from the 1950s-60s) to inspect the **flying control hinge brackets** — these are the mechanical joints that connect the pilot's control surfaces (like ailerons, elevators, rudder) to the aircraft structure. If these brackets fail, the pilot could lose control of the aircraft.\n\n**Who it affects:**\nAnyone who owns, operates, or maintains any model of the DH114 Heron aircraft.\n\n**What they must do:**\nFollow the inspection procedures detailed in **Hawker Siddeley Technical Note CF.1, Issue 4**. This document tells mechanics exactly what to look for and how to check these brackets for wear, cracks, or corrosion.\n\n**When:**\nThe directive took effect on **31 August 1970**.\n\n**Why it matters:**\nFlying control hinge brackets are critical safety components. This AD was issued to prevent structural failures that could lead to catastrophic loss of control. Even though the Heron is an older aircraft type, these directives remain binding on any still in service."}},"importantCases":[],"_links":{"self":"/api/acts/ad-dh114-10-amdt-1-flying-control-hinge-brackets-inspection","history":"/api/acts/ad-dh114-10-amdt-1-flying-control-hinge-brackets-inspection/history","analysis":"/api/acts/ad-dh114-10-amdt-1-flying-control-hinge-brackets-inspection/analysis","conflicts":"/api/acts/ad-dh114-10-amdt-1-flying-control-hinge-brackets-inspection/conflicts","importantCases":"/api/acts/ad-dh114-10-amdt-1-flying-control-hinge-brackets-inspection/important-cases","documents":"/api/acts/ad-dh114-10-amdt-1-flying-control-hinge-brackets-inspection/documents"}}