{"id":"F2006B06845","name":"AD/SD3-30/44 Amdt 1 - Engine Intake Anti-Icing Vane Annunciator","slug":"ad-sd3-30-44-amdt-1-engine-intake-anti-icing-vane-annunciator","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":114712,"registerId":"commonwealth-F2006B06845-current","compilationNumber":null,"startDate":"2026-04-03","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"AFM","sectionType":"part","heading":"AFM","content":"# AFM\n\nDoc.No.SBH.3.3 Doc.No.SBH.3.5 Doc.No.SBH.3.6 Doc.No.SBH.3.7 Doc.No.SBH.3.8 Doc.No.SB.3.9","sortOrder":0},{"sectionNumber":"Amendment","sectionType":"part","heading":"Amendment","content":"#   \nAmendment\n\nP/20\n\nP/7 P/18 P/18\n\nP/8 P/2","sortOrder":1},{"sectionNumber":"Short SD3-30 Series Aeroplanes","sectionType":"part","heading":"Short SD3-30 Series Aeroplanes","content":"# Short SD3-30 Series Aeroplanes\n\nAD/SD3-30/44 Amdt 1 (continued)\n\nThe original issue of this Directive introduced a modification to the CWP, which provided a new annunciator light to alert the pilot that the intake anti- icing vanes have not been deployed, when other anti- icing systems have been selected. The Directive also ensured that the relevant AFM ‘P’ amendment is embodied.\n\nThis Amendment corrects wiring anomalies contained in Part A of the original Service Bulletin. Only aeroplanes with certain serial numbers are affected by this amendment.\n\nThe original issue of this Airworthiness Directive became effective on 5 September 2002.\n\n![Signature of James Coyne Delegate of the Civil Aviation Safety Authority](image.002.png)  \n\nJames Coyne\n\nDelegate of the Civil Aviation Safety Authority 28 November 2002\n\n![](image.001.png)  \n\nThe above AD is notified in the Commonwealth of Australia Gazette on 18 December 2002.","sortOrder":2}],"analysis":{"kimi_summary":{"content_quality":"ok","complexity_score":3,"scope_assessment":{"changed":false,"description":"This amendment maintains the original scope precisely. It is a technical correction to implementation details (wiring anomalies) rather than an expansion of regulatory coverage. The original intent was to mandate an anti-icing warning system; this amendment simply ensures that mandate can be correctly installed."},"complexity_factors":["Very short document (approximately 200 words)","Only 2 substantive operative provisions: (1) original modification requirement, (2) wiring correction","Limited defined terms — relies on aviation industry standard abbreviations (AD, AFM, CWP, SBH) without explicit definitions in the text itself","Simple conditional scope: applies only to 'certain serial numbers' without enumerating them in the visible text","No nested exceptions or complex cross-referencing — references to 'Part A of the original Service Bulletin' and 'AFM P amendment' are single-level external references","Straightforward temporal structure: original effective date stated, amendment date stated, no complex commencement provisions"],"plain_english_summary":"This is an **Airworthiness Directive (AD)** — a mandatory safety order issued by the Civil Aviation Safety Authority (CASA) that requires specific fixes or modifications to aircraft.\n\n**What it does:**\nThis directive applies to **Short SD3-30 Series Aeroplanes** (a specific type of regional turboprop aircraft). It requires a modification to the aircraft's **Central Warning Panel (CWP)** — the dashboard that alerts pilots to problems.\n\nThe modification adds a **new warning light** that tells pilots when the **engine intake anti-icing vanes** (small devices that prevent ice from building up on the engine air intakes) have **not been deployed**, even though other anti-icing systems have been turned on. This is important because ice blocking engine intakes can cause engine failure.\n\n**What this Amendment (Amendment 1) changes:**\nThe original directive had some **wiring errors** in the instructions (specifically in \"Part A\" of the original Service Bulletin — a technical instruction manual from the manufacturer). This amendment fixes those wiring mistakes.\n\n**Who it affects:**\nOnly certain Short SD3-30 aircraft with **specific serial numbers** — not all of them.\n\n**Why it matters:**\nIce ingestion is a serious flight safety risk. This ensures pilots get a clear warning if their engine anti-icing protection isn't working as intended, and fixes technical errors that could have made the original modification unreliable."},"flash_summary":{"complexity_score":4,"scope_assessment":{"changed":true,"description":"This Amendment does not change the original safety objective (adding an annunciator and embodying the AFM ‘P’ amendment) but it changes the technical scope by correcting wiring anomalies contained in Part A of the original Service Bulletin and limits the corrective action to aeroplanes with certain serial numbers (\"Only aeroplanes with certain serial numbers are affected by this amendment\"). In other words, the operational mandate remains as originally stated, while the technical implementation and the set of affected airframes have been adjusted by this Amendment."},"complexity_factors":["Technical nature of the required work: electrical wiring corrections in Part A of the Service Bulletin (technical maintenance skill required).","Targeted applicability: only aircraft with certain serial numbers are affected, requiring accurate identification of applicable airframes.","Procedural linkage: the amendment interacts with an earlier modification to the Control and Warning Panel and an AFM (‘P’) amendment, requiring coordination between maintenance actions and documentation updates.","Regulatory compliance elements: responsibility for implementation is set by the issuing regulator (Delegate of the Civil Aviation Safety Authority), but the text supplied does not give deadlines or detailed compliance steps.","Limited textual detail: the Directive corrects anomalies in a Service Bulletin but the supplied text does not include the corrected wiring diagrams or step-by-step instructions, requiring reference to the Service Bulletin Part A for full technical implementation."],"plain_english_summary":"This amendment corrects wiring anomalies in Part A of an earlier Service Bulletin so a newly fitted cockpit annunciator for the engine intake anti-icing vanes functions as intended, while preserving the prior modification that added the annunciator and required the AFM ‘P’ amendment.  \n\nIt applies only to Short SD3‑30 aeroplanes with specified serial numbers and was issued by the Civil Aviation Safety Authority (Delegate James Coyne; signed 28 Nov 2002, Gazette notice 18 Dec 2002)."}},"importantCases":[],"_links":{"self":"/api/acts/ad-sd3-30-44-amdt-1-engine-intake-anti-icing-vane-annunciator","history":"/api/acts/ad-sd3-30-44-amdt-1-engine-intake-anti-icing-vane-annunciator/history","analysis":"/api/acts/ad-sd3-30-44-amdt-1-engine-intake-anti-icing-vane-annunciator/analysis","conflicts":"/api/acts/ad-sd3-30-44-amdt-1-engine-intake-anti-icing-vane-annunciator/conflicts","importantCases":"/api/acts/ad-sd3-30-44-amdt-1-engine-intake-anti-icing-vane-annunciator/important-cases","documents":"/api/acts/ad-sd3-30-44-amdt-1-engine-intake-anti-icing-vane-annunciator/documents"}}