{"id":"F2006B11159","name":"AD/LEARJET/7 - Emergency Exit Window, Seat-Back Operating Instruction Placard - Installation","slug":"ad-learjet-7-emergency-exit-window-seat-back-operating-instruction-placard-installation","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":56853,"registerId":"commonwealth-F2006B11159-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/LEARJET/7 - Emergency Exit Window, Seat-Back Operating Instruction Placard - Installation","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)  Gates Learjet 24 & 25 Series Aeroplanes\n\n \n\nAD/LEARJET/7 Emergency Exit Window, Seat-Back Operating\n\nInstruction Placard - Installation\n\n\n3/75\n\n \n\nApplicability: All models.\n\n \n\nRequirement: Install a placard above the cabin emergency exit window, immediately below the existing window operating instruction placard, as follows:\n\n \n\n“PUSH SEAT-BACK FORWARD TO CLEAR EXIT”.\n\n \n\nNote: Lettering shall be a minimum of 3/16\" high in red on a white background.\n\n \n\nCompliance: Before 30 June 1975.\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":1,"scope_assessment":{"changed":false,"description":"This is a discrete, targeted safety directive focused specifically on emergency exit signage for two aircraft models. There is no evidence of scope creep; the directive addresses exactly what it set out to address—ensuring clear evacuation instructions are visible to passengers."},"complexity_factors":["Single, unambiguous requirement with no conditional logic","No defined terms section","No cross-references to other legislation or regulations","No exceptions, exemptions, or alternative compliance methods","Extremely short document (approximately 150 words of substantive content)","Clear, prescriptive language with specific, measurable standards (3/16\" lettering, red on white)"],"plain_english_summary":"This is an **Airworthiness Directive** (a mandatory safety order) issued by Australia's Civil Aviation Safety Authority for **Gates Learjet 24 and 25 series aircraft**.\n\n**What it does:**\n- Requires aircraft operators to install a new safety sign (placard) above the cabin emergency exit window\n- The sign must read: **\"PUSH SEAT-BACK FORWARD TO CLEAR EXIT\"**\n- This sign goes directly below the existing window operating instructions\n\n**Why it matters:**\n- During an emergency evacuation, passengers need to clear the exit area quickly\n- Aircraft seats can recline backward and block emergency exits\n- This placard gives clear, immediate instructions to move the seat forward so people can escape\n\n**Technical requirements:**\n- Minimum letter height: 3/16 inch\n- Colour scheme: red text on white background (high visibility)\n\n**Who must comply:**\n- All owners/operators of Gates Learjet 24 and 25 series aircraft\n- Deadline: before 30 June 1975\n\n**In short:** A simple but critical safety fix to prevent seat-backs from trapping people during emergency evacuations."},"flash_summary":{"complexity_score":2,"scope_assessment":{"changed":false,"description":"The directive as published applies to all Gates Learjet 24 & 25 series aeroplanes and sets a single prescriptive installation requirement (Applicability; Requirement; Note) with a fixed compliance date (Compliance). The text contains no language indicating an expansion, reduction, or amendment to that scope beyond what it specifies."},"complexity_factors":["Narrow, specific physical requirement: single placard text, location and minimum lettering size (Requirement; Note)","Clear applicability to a defined fleet (Gates Learjet 24 & 25 series) (Applicability)","Fixed deadline for compliance reduces scheduling ambiguity (Compliance)","Low procedural discretion for implementers due to prescriptive specifications (Requirement; Note)","No ancillary procedures, testing, inspections, or certification steps included in the text"],"plain_english_summary":"What this instrument does (mechanics)\n\n- This airworthiness directive (AD/LEARJET/7) requires operators of Gates Learjet 24 & 25 series aeroplanes to install a small instruction placard at a specified location in the passenger cabin (Applicability; Requirement).\n- The placard must be placed above the cabin emergency exit window, immediately below the existing window operating instruction placard, and must read exactly: “PUSH SEAT-BACK FORWARD TO CLEAR EXIT” (Requirement).\n- The placard lettering must be at least 3/16\" high in red on a white background (Note).\n- The work must be completed by 30 June 1975 (Compliance).\n\nWho this affects and who decides\n\n- Who decides: the directive is issued under the Commonwealth Civil Aviation Regulations (Part 39) as part of the Civil Aviation Safety Authority’s schedule of airworthiness directives (header).\n- Who pays and acts: aircraft owners/operators of Gates Learjet 24 & 25 series aeroplanes are responsible for installing the placard (Applicability; Requirement).\n\nWhy it matters (stated purpose and practical effects)\n\n- The directive’s stated purpose is to provide a clear, visible instruction immediately adjacent to a cabin emergency exit window (Requirement). The mechanical effect is to add a standardized visual instruction where passengers or crew will see it when seated near the exit.\n\nCosts, incentives, trade-offs and implementation considerations\n\n- Direct costs and who bears them: operators incur the cost of acquiring or producing the placard and the labour to install it (Requirement; Note). The placard specification (size, colour, text) reduces variability in equipment purchases but requires conformity to those specifications (Note).\n- Compliance burden and timing: the installation is a discrete, one-off physical task with a fixed deadline (Compliance). The directive specifies exact wording, location and minimum lettering size, which limits installer discretion and reduces implementation uncertainty (Requirement; Note).\n- Administrative discretion and enforcement: the directive gives little operational discretion—installation location, text and appearance are specified—so implementing authorities or maintainers have a clear, narrow compliance task (Requirement; Note).\n- Opportunity costs and productivity: the action displaces a small amount of maintenance or cabin-refit time; there are no ongoing recurring operational costs set out in the text (Requirement; Compliance).\n- Effects on private enterprise and market functioning: the measure standardises a cabin placard for the affected models. It imposes a minor, one-off compliance cost on operators and does not alter ownership, routes, fares, competition, contracting freedom or aircraft certification beyond the stated installation requirement (Applicability; Requirement).\n- Substitution and unintended consequences: the directive’s specificity (exact wording, location, colour and minimum lettering height) reduces variation but creates a need to replace or rework non-conforming placards if they already exist. No other substitution effects are specified in the text (Requirement; Note).\n\nImplementation risk\n\n- The technical and operational risk of complying is low: the task is installation of a small placard in a cabin location specified by the directive (Requirement). The main implementation risk is ensuring the placard matches the specified dimensions and colour and is installed before the prescribed date (Note; Compliance)."}},"importantCases":[],"_links":{"self":"/api/acts/ad-learjet-7-emergency-exit-window-seat-back-operating-instruction-placard-installation","history":"/api/acts/ad-learjet-7-emergency-exit-window-seat-back-operating-instruction-placard-installation/history","analysis":"/api/acts/ad-learjet-7-emergency-exit-window-seat-back-operating-instruction-placard-installation/analysis","conflicts":"/api/acts/ad-learjet-7-emergency-exit-window-seat-back-operating-instruction-placard-installation/conflicts","importantCases":"/api/acts/ad-learjet-7-emergency-exit-window-seat-back-operating-instruction-placard-installation/important-cases","documents":"/api/acts/ad-learjet-7-emergency-exit-window-seat-back-operating-instruction-placard-installation/documents"}}