{"id":"F2006B03954","name":"AD/BEECH 50/30 - Engine Emergency Placard","slug":"ad-beech-50-30-engine-emergency-placard","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":43563,"registerId":"commonwealth-F2006B03954-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/BEECH 50/30 - Engine Emergency Placard","content":"COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 \\- 105 CIVIL AVIATION SAFETY AUTHORITY\n\nSCHEDULE OF AIRWORTHINESS DIRECTIVES\n\n![](image.001.png)  \nBeechcraft 50 (Twin Bonanza) Series Aeroplanes\n\nAD/BEECH 50/30 Engine Emergency Placard 9/79\n\nApplicability: All models.\n\nRequirement: Inspect emergency engine shutdown procedure placard on overhead or instrument panel for legibility and condition. If defaced or missing, fabricate a new placard using letters of 3mm height and affix to either overhead or instrument panel.\n\nPlacard to read:\n\nEMERGENCY ENGINE SHUTDOWN PROCEDURES\n\n    MIXTURE CONT-IDLE CUT-OFF\n\n    2. FUEL SELECTOR-OFF\n\n    3. OIL SHUT-OFF HDL-UP AND LKD\n\n    4. PROP CONTROL-FEATHERED\n\n    5. THROTTLE-FULLY OPEN\n\n    6. BOTH BOOST PUMPS-OFF\n\n    7. MAGNETO SWITCH-OFF\n\n    8. ALTNTR/GEN SWITCH OFF\n\nCompliance: Within 100 hours’ time in service after 30 September 1979.\n\nBackground: As the original engine emergency shutdown procedure decal may have become defaced or be otherwise illegible a more durable placard is to be installed as per a recent FAA requirement.","sortOrder":0}],"analysis":{"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a narrow, technical airworthiness directive with a single purpose: ensuring emergency shutdown instructions remain visible to pilots. It has not expanded beyond its original safety intent."},"complexity_factors":["Single, specific requirement with clear applicability (all Beechcraft 50 models)","Only one defined term implied ('time in service')","No cross-references to other legislation or complex conditional logic","Straightforward compliance deadline (100 hours after fixed date)","Prescriptive technical content (placard wording) but presented in plain list format"],"plain_english_summary":"This is a **safety instruction for owners of specific Beechcraft aeroplanes** (the Twin Bonanza series). It requires them to check that an emergency engine shutdown placard — a label showing the steps to shut down an engine in an emergency — is still readable and in good condition. If the placard is damaged or missing, the owner must make and install a new one with specific wording and letter size (3mm tall). The placard must list eight specific steps for emergency shutdown, from cutting off the fuel mixture to turning off the alternator/generator. Owners had to complete this check and any replacement within 100 hours of flying time after 30 September 1979."},"flash_summary":{"complexity_score":2,"scope_assessment":{"changed":false,"description":"The directive implements a specific, time-bound requirement to inspect and, if necessary, replace an emergency engine shutdown placard on all Beechcraft 50 series aeroplanes. This mirrors the stated original purpose (to replace defaced or illegible decals and meet a recent FAA requirement) and does not expand or narrow the population to which the requirement applies beyond \"all models\" (Applicability, Requirement, Background)."},"complexity_factors":["Narrow technical scope limited to a single placard and specific aircraft series (Applicability, Requirement)","Highly prescriptive content: exact placard wording and minimum letter height (Requirement)","Clear, short compliance timeframe (100 hours after 30 September 1979) (Compliance)","Low administrative and technical burden for fabrication and installation (Requirement)","Some ambiguity in assessing \"defaced\" or \"legibility,\" which requires inspector judgement (Requirement)","Limited discussion of enforcement or monitoring in the excerpt (Requirement, Compliance)","Allowed placement flexibility (overhead or instrument panel) reduces implementation friction but introduces minor choice for installers (Requirement)","Reference to an external FAA requirement creates a cross-jurisdictional rationale but no complex regulatory cascade in the text (Background)"],"plain_english_summary":"# What this directive does\n\nThis airworthiness directive requires operators of Beechcraft 50 (Twin Bonanza) series aeroplanes to check the emergency engine shutdown procedure placard and replace it if it is defaced or missing. The replacement must be a durable placard bearing the specified instructions, with characters at least 3 mm high, affixed to either the overhead or the instrument panel (Requirement). The placard text is prescribed precisely in the directive (Requirement). The check and any necessary replacement had to be completed within 100 hours time in service after 30 September 1979 (Compliance).\n\n# Who it applies to and who acts\n\n- Applies to: all models of Beechcraft 50 series aeroplanes (Applicability).\n- Who must act: the aircraft owner/operator or their maintenance agent must inspect the existing placard and, if it is defaced or missing, fabricate and fit the replacement placard to the aircraft (Requirement).\n- Where it can go: the directive allows the placard to be fitted either on the overhead or on the instrument panel (Requirement).\n\n# Stated purpose and source of the change\n\nThe directive explains the reason for the requirement: the original engine emergency shutdown decal may have become defaced or illegible, and a more durable placard is to be installed in line with a recent FAA requirement (Background). That is presented as the official rationale; the rule implements that change by specifying the exact wording, minimum letter size, and permitted placement (Requirement).\n\n# Practical effects, costs and incentives\n\n- Direct costs: owners/operators bear the cost of inspection and, if needed, fabricating and affixing a new placard. The directive prescribes a simple fabrication standard (3 mm letters) and permitted locations, so material and labour costs are likely small and one-off if replacement is required (Requirement).\n- Behavioural effect: operators must inspect and replace illegible or missing placards; those with already-legible placards face no change. The allowance of two mounting locations gives some flexibility to owners/operators about where to fit the placard (Requirement).\n- Market effects: demand for small placard fabrication and routine maintenance labour may increase modestly for a short period; ongoing competitive effects on suppliers or operators are minimal given the narrow and technical nature of the requirement.\n\n# Trade-offs, compliance burden and implementation risks\n\n- Compliance burden: the requirement is narrowly targeted and prescriptive, so administrative and technical burdens are low. The fixed compliance window (100 hours after 30 September 1979) meant the action was time-bound (Compliance).\n- Implementation risk: the rule is specific about wording, letter size and placement, which reduces interpretation risk. However, the directive does not define detailed standards for what counts as \"defaced\" or \"legible,\" so inspectors or maintainers may exercise judgement when enforcing the requirement (Requirement).\n- Bureaucratic discretion: the directive prescribes the requirement and acceptable placements; it leaves assessment of legibility and the act of fabrication/installation to owners/operators and maintenance personnel. The excerpt does not set out enforcement procedures or penalties in detail (Requirement, Compliance).\n\n# Net picture\n\nMechanically, the directive replaces potentially illegible emergency engine shutdown decals with a specified, durable placard on every Beechcraft 50 series aeroplane (Requirement). The stated objective is to ensure legible emergency procedures in-line with an FAA requirement (Background). The practical costs fall on owners/operators as a small, one-off inspection and possible placard fabrication; benefits are concentrated on cockpit crews who rely on clear emergency instructions. The directive is narrowly scoped, prescriptive, and straightforward to implement, with limited discretion and low expected ongoing economic impact (Applicability, Requirement, Compliance, Background)."}},"importantCases":[],"_links":{"self":"/api/acts/ad-beech-50-30-engine-emergency-placard","history":"/api/acts/ad-beech-50-30-engine-emergency-placard/history","analysis":"/api/acts/ad-beech-50-30-engine-emergency-placard/analysis","conflicts":"/api/acts/ad-beech-50-30-engine-emergency-placard/conflicts","importantCases":"/api/acts/ad-beech-50-30-engine-emergency-placard/important-cases","documents":"/api/acts/ad-beech-50-30-engine-emergency-placard/documents"}}