{"id":"F2006B09260","name":"AD/DHE/10 - NOT ISSUED","slug":"ad-dhe-10-not-issued","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":53232,"registerId":"commonwealth-F2006B09260-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/DHE/10 - NOT ISSUED","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 - 106 CIVIL AVIATION SAFETY AUTHORITY\n\nSCHEDULE OF AIRWORTHINESS DIRECTIVES\n\n \n\n![](image.001.png)  De Havilland Piston Engines\n\n \n\nAD/DHE/10 NOT ISSUED N/A\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":2,"scope_assessment":{"changed":false,"description":"The supplied entry records that AD/DHE/10 was not issued; it therefore does not change the legal or compliance scope that applies to De Havilland piston engines under existing rules. No new obligations or delegations are created by this entry. (AD/DHE/10 — NOT ISSUED; Part 39 - 106.)"},"complexity_factors":["Document contains a single, non-operative placeholder entry (AD/DHE/10 — NOT ISSUED).","No substantive regulatory text or operative requirements in the supplied entry.","Relies on broader Part 39 framework for decision-making authority (CASA discretion) rather than on this entry.","Potential for administrative ambiguity about status of a numbered AD entry.","Low factual and interpretive content reduces statutory complexity but increases reliance on external records."],"plain_english_summary":"# What this entry does\n\nThis entry in the Schedule of Airworthiness Directives records an airworthiness-directive reference number (AD/DHE/10) that was not issued. The entry names the affected equipment as \"De Havilland Piston Engines\" and is marked \"NOT ISSUED.\" (See: AD/DHE/10 — NOT ISSUED; De Havilland Piston Engines; Schedule of Airworthiness Directives, Part 39 - 106.)\n\n# How it works mechanically\n\n- The Schedule lists AD references and their status. By marking AD/DHE/10 as \"NOT ISSUED,\" the Schedule does not create or impose any new mandatory maintenance, inspection, design-change, or record-keeping requirement tied to that AD number. (AD/DHE/10 — NOT ISSUED.)\n- The Civil Aviation Safety Authority (CASA) under the Part 39 framework is the decision-maker who issues ADs; this entry records that no AD was issued under this specific reference. (COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 106 CIVIL AVIATION SAFETY AUTHORITY.)\n\n# Who this affects\n\n- Owners, operators and maintenance organisations responsible for De Havilland piston engines: there is no new compliance obligation arising from this entry because the AD was not issued. (AD/DHE/10 — NOT ISSUED.)\n- CASA and its regulators: the entry documents the status of a potential AD and preserves CASA's discretion to issue ADs in future. (Part 39 - 106.)\n\n# Why it matters (practical implications)\n\n- Immediate financial and compliance effect: none — no new costs or penalties flow from an AD that was not issued. (AD/DHE/10 — NOT ISSUED.)\n- Incentives and behaviour: because no AD was promulgated, affected parties face the existing baseline incentives to maintain safety under other applicable requirements; they do not face a new mandated action tied to AD/DHE/10. (Part 39 - 106.)\n- Administrative and operational friction: the presence of a \"NOT ISSUED\" placeholder can cause modest transaction costs: operators and maintenance providers must check the Schedule to confirm that no AD applies to that reference, and record-keeping or cross-referencing systems may need to handle a non-issued entry. (AD/DHE/10 — NOT ISSUED.)\n- Discretion and future change: CASA retains the authority to issue ADs later; this entry does not limit that discretion and therefore does not lock in a permanent legal position. (Part 39 - 106.)\n\n# Trade-offs, risks and implementation points to watch\n\n- Cost trade-off: marking an AD as not issued avoids immediate compliance costs for engine owners, while preserving the regulator’s option to act if a safety issue later emerges. (AD/DHE/10 — NOT ISSUED; Part 39 - 106.)\n- Risk of ambiguity: stakeholders relying on published AD lists may misinterpret a placeholder entry unless record-keeping and notification procedures are clear. That can lead to either redundant voluntary inspections (minor private costs) or, conversely, failure to act if an AD is expected but not actually required. (AD/DHE/10 — NOT ISSUED.)\n- Concentration of effects: because no AD was issued, there are no concentrated regulatory benefits or costs allocated by this entry. Any future AD would reassign costs to the regulated owners/operators. (AD/DHE/10 — NOT ISSUED.)\n\nIn short: this Schedule entry records that an airworthiness directive numbered AD/DHE/10 for De Havilland piston engines was not issued. Mechanically it imposes no new obligations, leaves CASA's decision-making authority intact, and mainly serves as an administrative record that operators and maintainers should check when confirming applicable safety directives. (AD/DHE/10 — NOT ISSUED; Schedule of Airworthiness Directives, Part 39 - 106.)"},"kimi_summary":{"content_quality":"rejected","complexity_score":1,"rejection_reason":"This is not substantive legislation. It is an administrative placeholder indicating that Airworthiness Directive AD/DHE/10 has not been issued. The document contains only metadata, formatting artifacts, and a status marker ('NOT ISSUED N/A') with no legal content to analyse.","scope_assessment":{"changed":false,"description":"Not applicable — this is an administrative placeholder with no substantive scope."},"complexity_factors":["Document is a single-line placeholder with no substantive legal content","No defined terms, cross-references, or conditional provisions","No operative provisions or obligations","Consists entirely of metadata and administrative marking"],"plain_english_summary":"This document is a placeholder entry in the Civil Aviation Safety Authority's Schedule of Airworthiness Directives. It indicates that **Airworthiness Directive AD/DHE/10** for **De Havilland Piston Engines** has **not been issued** (marked \"N/A\"). \n\n**What this means:**\n- **Airworthiness Directives (ADs)** are mandatory safety notices issued by the Civil Aviation Safety Authority (CASA) that require aircraft owners and operators to fix unsafe conditions in aircraft, engines, or equipment.\n- **AD/DHE/10** would be the 10th directive in the series for De Havilland piston engines (the \"DHE\" code).\n- The \"NOT ISSUED\" status means CASA has reserved this directive number but has not yet released any safety requirements under it.\n\n**Who it affects:** Aircraft operators, maintenance engineers, and owners of aircraft powered by De Havilland piston engines.\n\n**Why it matters:** This placeholder ensures proper record-keeping in the regulatory system. It prevents confusion about whether directive #10 exists and maintains sequential numbering for future safety notices."}},"importantCases":[],"_links":{"self":"/api/acts/ad-dhe-10-not-issued","history":"/api/acts/ad-dhe-10-not-issued/history","analysis":"/api/acts/ad-dhe-10-not-issued/analysis","conflicts":"/api/acts/ad-dhe-10-not-issued/conflicts","importantCases":"/api/acts/ad-dhe-10-not-issued/important-cases","documents":"/api/acts/ad-dhe-10-not-issued/documents"}}