{"id":"F2006B10508","name":"AD/HS 125/68 - Ailerons - Modification","slug":"ad-hs-125-68-ailerons-modification","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":116279,"registerId":"commonwealth-F2006B10508-current","compilationNumber":null,"startDate":"2026-04-03","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/HS 125/68 - Ailerons - 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)  British Aerospace BAe 125 Series Aeroplanes\n\n \n\nAD/HS 125/68 Ailerons - Modification  7/85 DM\n\nThis AD contents has been removed from the listing because the aircraft model is not currently on the register.\n\n \n","sortOrder":0}],"analysis":{"kimi_summary":{"content_quality":"ok","complexity_score":1,"scope_assessment":{"changed":false,"description":"This appears to be a current status record of an Airworthiness Directive. The scope has not expanded beyond its original purpose (regulating aileron modifications for a specific aircraft type). The directive has simply been deactivated due to lack of applicable aircraft on the register."},"complexity_factors":["Extremely short document (under 100 words)","No defined terms section","No cross-references to other legislation","No conditional logic or exceptions","Essentially a status notice indicating the directive is no longer active","Single subject matter with no procedural requirements currently in force"],"plain_english_summary":"This is a **Civil Aviation Safety Authority (CASA) Airworthiness Directive** — essentially a mandatory safety notice for aircraft. Specifically, it relates to **British Aerospace BAe 125 series aeroplanes** (a type of business jet) and concerns **modifications to the ailerons** (the hinged surfaces on the wings that control the aircraft's roll/banking).\n\n**What it does:**\n- Originally required owners/operators of these aircraft to modify their ailerons to meet safety standards\n- **However**, this directive has been **removed from active status** because the aircraft model is no longer registered in Australia — meaning there are no BAe 125 aircraft currently on the Australian civil aircraft register that would need to comply\n\n**Who it affects:**\n- Nobody currently — since no BAe 125 aircraft are registered in Australia, there are no operators who need to follow this directive\n- Historically, it would have affected owners and operators of BAe 125 business jets\n\n**Why it matters:**\n- Demonstrates how aviation safety regulation works: CASA issues mandatory directives when safety issues are identified with specific aircraft types\n- Shows the lifecycle of regulations — when aircraft types are retired from the register, associated directives become redundant and are removed from active listings"},"flash_summary":{"complexity_score":2,"scope_assessment":{"changed":true,"description":"The listed scope changed from an active AD entry (requiring an aileron modification for BAe 125 series aeroplanes, as identified by the AD title) to a removed entry: the supplied note states the AD contents have been removed from the listing because the aircraft model is not currently on the register. The supplied text does not include the original operative requirements or any transitional provisions; it simply records removal from the schedule. (source: AD title and removal note)"},"complexity_factors":["Very short text with minimal substantive provisions (only title, model, identifier and a removal note).","No operative or technical detail about the required modification included in the supplied text.","Narrow affected population (single aircraft type) reduces procedural and stakeholder complexity.","Administrative action (removal from listing) simplifies current compliance status but leaves informational gaps about the original directive.","Absence of compliance, cost, enforcement or timeline information prevents deeper legal or economic analysis from this source alone."],"plain_english_summary":"### What this instrument did, mechanically\n\n- AD/HS 125/68 was an Airworthiness Directive (AD) issued under the Commonwealth of Australia (Civil Aviation Regulations 1998), Part 39 — Schedule of Airworthiness Directives. The entry is titled “Ailerons - Modification” and is identified as AD/HS 125/68 (7/85 DM). (source: AD/HS 125/68 title and heading)\n- The AD applied to British Aerospace BAe 125 series aeroplanes (source: model line in the entry).\n- The listing entry for this AD has been removed with the stated reason that the aircraft model is not currently on the register. (source: removal note)\n\n### Official purpose (as stated or implied by the source)\n- By its title, the AD’s purpose was to require a modification to the ailerons on BAe 125 series aeroplanes. That is the operational change the instrument set out to require while it was listed. (source: AD title “Ailerons - Modification”)\n- The removal note states only that the AD contents have been removed from the listing because the aircraft model is not currently on the register; the entry does not state other reasons or current actions. (source: removal note)\n\n### Who decides, who is affected, and who pays (as shown in the source)\n- Decision authority: The entry is part of the Commonwealth schedule of Airworthiness Directives under the Civil Aviation Regulations; the listing and its removal are administrative actions within that framework. (source: heading referencing Commonwealth/Civil Aviation Regulations/Part 39)\n- Affected parties (when the AD was listed): The identified affected type was the British Aerospace BAe 125 series aeroplanes. The entry does not list individual owners or operators. (source: model line)\n- Who pays / bears costs: The entry does not specify cost allocation, compliance costs, or compensation. The removal note indicates the AD is no longer listed because the type is not on the register; the entry contains no active compliance obligations. (source: removal note)\n\n### Implementation, compliance and enforcement (what the source says and what it does not say)\n- The source does not include the technical amendment text, compliance deadlines, inspection or modification procedures, enforcement mechanisms, or cost estimates. It only identifies the AD title, model, identifier and that the entry has been removed from the listing. (source: entire entry)\n- Because the listing entry has been removed for the stated reason, there is no active directive in the listed schedule entry to implement or enforce as of the text provided. (source: removal note)\n\n### Practical implications and trade-offs (stated or directly inferable from the source)\n- Narrow scope: The AD, as identified, targeted a specific aircraft type (BAe 125 series). The listed removal narrows immediate practical effect to nil for aircraft on the Australian register. (source: model line; removal note)\n- Information gaps: The entry provides no detail on the substance of the required aileron modification, no compliance timeline, no stated costs, and no stated enforcement or oversight measures. These omissions mean that the listing text by itself does not permit assessment of compliance burden, market effects, or likely behavioural responses. (source: absence of substantive text)\n\n### Summing up\n- Mechanically, AD/HS 125/68 was an airworthiness directive aimed at modifying ailerons on BAe 125 series aeroplanes. The schedule entry has been removed because the model is not on the register, and the text supplied contains no operative detail on the modification, costs, or compliance mechanisms. (source: entire entry)"}},"importantCases":[],"_links":{"self":"/api/acts/ad-hs-125-68-ailerons-modification","history":"/api/acts/ad-hs-125-68-ailerons-modification/history","analysis":"/api/acts/ad-hs-125-68-ailerons-modification/analysis","conflicts":"/api/acts/ad-hs-125-68-ailerons-modification/conflicts","importantCases":"/api/acts/ad-hs-125-68-ailerons-modification/important-cases","documents":"/api/acts/ad-hs-125-68-ailerons-modification/documents"}}