{"id":"F2006B06850","name":"AD/SD3-30/6 - Passenger Cabin Window - Modification","slug":"ad-sd3-30-6-passenger-cabin-window-modification","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":114721,"registerId":"commonwealth-F2006B06850-current","compilationNumber":null,"startDate":"2026-04-03","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/SD3-30/6 - Passenger Cabin Window - 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)  Short SD3-30 Series Aeroplanes\n\n \n\nAD/SD3-30/6 Passenger Cabin Window - Modification 1/82\n\nApplicability: SD 3-30 aircraft with S/Nos. SH 3002 to SH 3071; and SH 3073, SH 3075, SH 3077\n\nand SH 3078.\n\n \n\nDocument: Shorts SB No. SD3-56-02.\n\n \n\n(Modification No. 6159).\n\n \n\nCompliance: Accomplish before 1 April, 1982.\n\n \n\nBackground:  An instance has been reported where ice cast by the propeller penetrated the right hand window immediately aft of the propeller plane.\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 AD’s scope, as stated in the document, is limited to modifying the passenger cabin window on the listed SD3-30 serial numbers to address a reported incident of propeller‑cast ice penetration. The text does not indicate any expansion or narrowing of scope from an earlier or alternative intent; it specifies the affected aircraft, the modification reference, and a compliance date, consistent with the stated purpose."},"complexity_factors":["Narrow, clearly defined applicability (specific serial numbers listed).","Single, time‑limited action required (one modification to be completed before a fixed date).","Technical details are delegated to an external document (Shorts SB No. SD3-56-02), so the AD itself is short and procedural rather than technical.","No procedural or discretionary pathways, exemptions, or complex compliance options described in the text.","Potential operational complexity depends on the technical content of the referenced Service Bulletin, which is not reproduced in the AD."],"plain_english_summary":"This directive mandates a physical modification to the passenger‑cabin window of specified Short SD3‑30 aircraft (listed serial numbers) per Shorts Service Bulletin SD3‑56‑02 (Modification No. 6159), to be completed before 1 April 1982. Operators bear the cost and must schedule the work, which temporarily reduces aircraft availability; the measure aims to reduce the risk of propeller‑cast ice penetrating the affected window and improve occupant safety."},"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a discrete, time-bound safety directive addressing a specific mechanical failure mode (propeller ice impact on cabin windows). It has not expanded beyond its original narrow technical scope."},"complexity_factors":["Extremely short document (under 200 words)","Only 4 operative provisions: applicability, reference document, compliance deadline, and brief background","No defined terms section","No cross-references to other legislation beyond the parent Civil Aviation Regulations 1998","Single, unambiguous compliance action with specific technical reference (Shorts SB No. SD3-56-02)","Fixed deadline rather than conditional or calculated timeframe"],"plain_english_summary":"This is an **Airworthiness Directive** (a mandatory safety order) issued by Australia's Civil Aviation Safety Authority for a specific type of aircraft: the **Short SD3-30** (also known as the Short 330, a small regional turboprop plane).\n\n**What it does:**\n- Requires owners/operators of specific SD3-30 aircraft (serial numbers SH 3002 to SH 3071, plus SH 3073, SH 3075, SH 3077 and SH 3078) to modify the passenger cabin windows.\n- The modification must follow **Shorts Service Bulletin SD3-56-02** (specifically Modification No. 6159).\n- The work had to be completed **before 1 April 1982**.\n\n**Why it matters:**\n- **Safety risk:** Ice thrown from the propellers had already smashed through a passenger window on one of these planes. This created a serious risk of cabin depressurisation, passenger injury, or loss of aircraft control.\n- **Mandatory compliance:** Unlike a recommendation, an Airworthiness Directive is legally enforceable. You cannot fly the affected aircraft until the fix is done.\n\n**Who it affects:**\n- Airlines or operators flying these specific Short SD3-30 aircraft in Australia.\n- Maintenance organisations servicing these planes."}},"importantCases":[],"_links":{"self":"/api/acts/ad-sd3-30-6-passenger-cabin-window-modification","history":"/api/acts/ad-sd3-30-6-passenger-cabin-window-modification/history","analysis":"/api/acts/ad-sd3-30-6-passenger-cabin-window-modification/analysis","conflicts":"/api/acts/ad-sd3-30-6-passenger-cabin-window-modification/conflicts","importantCases":"/api/acts/ad-sd3-30-6-passenger-cabin-window-modification/important-cases","documents":"/api/acts/ad-sd3-30-6-passenger-cabin-window-modification/documents"}}