{"id":"F2006B08964","name":"AD/DH114/7 - Engine Mounting Frame - Inspection","slug":"ad-dh114-7-engine-mounting-frame-inspection","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":52545,"registerId":"commonwealth-F2006B08964-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/DH114/7 - Engine Mounting Frame - 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/DH114/7 Engine Mounting Frame - Inspection NK\n\nApplicability: All models not modified in accordance with DH Heron Mod. No. 1275. Document:  De Havilland TNS Series Heron (114) No. E.1, Issue 2.\n\nCompliance: As detailed in requirement document, with effect from 31 Dec. 1960.\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 airworthiness directive from 1960 concerning a specific structural inspection. It has not expanded beyond its original purpose of ensuring engine mounting frame integrity on DH114 Heron aircraft."},"complexity_factors":["Single, specific technical requirement (one inspection task)","Clear applicability test (all models except those with Mod. 1275)","No defined terms section or interpretive provisions","No cross-references to other legislation or regulations beyond the cited technical document","Single compliance date with reference to external technical standard","Extremely short document (approximately 100 words of substantive content)"],"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 **De Havilland DH114 Heron series aeroplanes** to inspect the **engine mounting frame** (the structure that holds the engine to the wing or fuselage).\n\n**Who must comply:**\nAnyone operating a DH114 Heron that **hasn't been modified** according to \"DH Heron Modification No. 1275.\" If your plane has that specific modification, this directive doesn't apply to you.\n\n**What you need to do:**\nFollow the inspection procedures detailed in the technical document \"De Havilland TNS Series Heron (114) No. E.1, Issue 2.\" The deadline to start complying was **31 December 1960**.\n\n**Why it matters:**\nEngine mounting frames are critical safety components. If they crack or fail, the engine could detach from the aircraft in flight. This directive ensures older Heron aircraft receive necessary safety inspections to prevent catastrophic failures."},"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":false,"description":"The instrument, as presented, sets an inspection requirement for engine mounting frames on DH114 (Heron) aircraft and excludes aircraft modified by DH Heron Mod. No. 1275. The text provides no indication that the scope has been altered from that stated purpose: it applies to all non-modified models and defers procedural detail to the referenced De Havilland requirement document (Applicability; Document; Compliance)."},"complexity_factors":["Reference to an external technical requirement document (De Havilland TNS Series Heron (114) No. E.1, Issue 2) rather than including inspection steps in the directive itself (Document).","Applicability carve-out for aircraft modified in accordance with DH Heron Mod. No. 1275, requiring verification of modification status (Applicability).","Lack of procedural detail in the AD text; implementers must obtain and rely on the separate requirement document to know exact actions and intervals (Document & Compliance).","Regulatory enforcement and oversight rest with the Civil Aviation Safety Authority as the issuing body, which centralises decision-making about compliance (header).","Effective date is historical (31 Dec. 1960), which may create record-keeping or legacy-configuration issues for operators of older aircraft (Compliance)."],"plain_english_summary":"This AD (AD/DH114/7) mandates inspection of the engine mounting frame on De Havilland Heron (DH114) aeroplanes, excluding aircraft already modified per Mod. No. 1275. \n\nCompliance must follow the procedures and intervals in the referenced De Havilland requirement document; aircraft operators/owners are responsible for carrying out inspections, any corrective work, and associated costs."}},"importantCases":[],"_links":{"self":"/api/acts/ad-dh114-7-engine-mounting-frame-inspection","history":"/api/acts/ad-dh114-7-engine-mounting-frame-inspection/history","analysis":"/api/acts/ad-dh114-7-engine-mounting-frame-inspection/analysis","conflicts":"/api/acts/ad-dh114-7-engine-mounting-frame-inspection/conflicts","importantCases":"/api/acts/ad-dh114-7-engine-mounting-frame-inspection/important-cases","documents":"/api/acts/ad-dh114-7-engine-mounting-frame-inspection/documents"}}