{"id":"F2006B03724","name":"AD/BEECH 200/71 - Fuselage Rear Pressure Bulkhead - Scoring Damage","slug":"ad-beech-200-71-fuselage-rear-pressure-bulkhead-scoring-damage","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":43314,"registerId":"commonwealth-F2006B03724-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"AIRWORTHINESS DIRECTIVE","sectionType":"part","heading":"AIRWORTHINESS DIRECTIVE","content":"# AIRWORTHINESS DIRECTIVE\n\n![](image.001.png)  \n\nFor the reasons set out in the background section, the CASA delegate whose signature appears below issues the following Airworthiness Directive (AD) under subregulation 39.1 (1) of CASR 1998. The AD requires that the action set out in the requirement section (being action that the delegate considers necessary to correct the unsafe condition) be taken in relation to the aircraft or aeronautical product mentioned in the applicability section: (a) in the circumstances mentioned in the requirement section; and (b) in accordance with the instructions set out in the requirement section; and (c) at the time mentioned in the compliance section.\n\n![](image.001.png)  \n\nBeechcraft 200 (Super King Air) Series Aeroplanes","sortOrder":0},{"sectionNumber":"AD/BEECH 200/71 Fuselage Rear Pressure B","sectionType":"part","heading":"AD/BEECH 200/71 Fuselage Rear Pressure Bulkhead - Scoring Damage","content":"# AD/BEECH 200/71 Fuselage Rear Pressure Bulkhead \\- Scoring Damage\n\n  \n4/2004","sortOrder":1}],"analysis":{"flash_summary":{"complexity_score":5,"scope_assessment":{"changed":false,"description":"The AD follows the standard airworthiness-directive framework: it applies to Beechcraft 200 (Super King Air) series aeroplanes and mandates corrective action for scoring damage to the fuselage rear pressure bulkhead as set out in the AD’s Requirement and Compliance sections. The instrument’s scope, as described in the provided text, aligns with that stated purpose and does not indicate a change from the AD’s original corrective-intent scope (see Applicability, Background, Requirement and Compliance sections)."},"complexity_factors":["Legal authority and delegation under subregulation 39.1(1) of CASR 1998 (introductory paragraph) — creates regulatory discretion that affects how prescriptive the AD is.","Conditional compliance structure (Applicability, Requirement and Compliance sections referenced) — actions are triggered only in specified circumstances and must follow specified instructions and timing.","Technical subject matter (structural damage to fuselage rear pressure bulkhead) — requires specialised inspection and repair skills, parts and possibly engineering approvals.","Operational impact (aircraft downtime and scheduling) — compliance timing affects commercial operations and maintenance planning.","Implementation detail dependence — clarity of the Requirement and Compliance sections determines administrative burden and potential need for further approvals or alternative methods.","Concentrated population of affected aircraft (Beechcraft 200 series) — concentrates costs on a defined operator group, creating potential for significant per-aircraft expense."],"plain_english_summary":"### What this instrument does (mechanically)\n\nThis is an Airworthiness Directive (AD) issued by the Civil Aviation Safety Authority (CASA) under subregulation 39.1(1) of CASR 1998. It applies to Beechcraft 200 (Super King Air) series aeroplanes and addresses scoring damage to the fuselage rear pressure bulkhead. The AD requires operators to take whatever corrective action is specified in the AD’s Requirement section, in the circumstances set out there, following the instructions in that Requirement section and within the timeframes set out in the Compliance section. The AD is issued for reasons stated in its Background section (see title block and introductory paragraphs).\n\n### Who it affects\n\n- Aircraft owners and operators of Beechcraft 200 (Super King Air) series aeroplanes (Applicability section).\n- Maintenance organisations and licensed engineers who must carry out inspections, repairs or modifications specified by the AD (Requirement and Compliance sections).\n\n### Who decides and who pays\n\n- The CASA delegate signs and issues the AD under subregulation 39.1(1) of CASR 1998 (introductory paragraph). That delegate decides the required corrective action and the applicable timing (Requirement and Compliance sections).\n- The direct financial burden of inspections, repairs, parts and aircraft downtime falls on the aircraft owner/operator and the maintenance provider engaged by them (implicit from the AD’s requirement that operators carry out the actions in the Requirement and Compliance sections).\n\n### Why it matters (official rationale and practical implications)\n\n- The AD is justified by reasons given in the Background section; those reasons motivate the corrective actions mandated in the Requirement section.\n- Mechanically, the AD forces operators to inspect for and correct scoring damage to the rear pressure bulkhead as prescribed, which can require parts replacement, structural repair, or additional inspections (as defined in the Requirement section).\n\n### Costs, incentives and trade-offs (mechanisms, not conclusions)\n\n- Costs and who bears them: operators bear the direct costs of complying (inspection labour, parts, repair, out-of-service time). This follows from the AD structure that obliges operators to take the actions in the Requirement and Compliance sections.\n- Incentives and behaviour changes: operators face a choice between promptly complying to return aircraft to service or delaying at the risk of regulatory non-compliance and potential safety consequences. Compliance timing is set in the Compliance section, creating a short-run scheduling and cash-flow incentive to prioritise affected aircraft.\n- Compliance burden and discretion: the CASA delegate sets the required action and timing under subregulation 39.1(1) (introductory paragraph). The AD’s Requirement and Compliance sections determine how prescriptive the work is (inspection method, repair standard, and who may perform the work). That creates administrative and technical burdens on operators and maintenance organisations to follow specific methods and document compliance.\n- Opportunity costs and downtime: required inspections and repairs will take aircraft out of service for the duration of the work specified in the Requirement and Compliance sections, imposing opportunity costs on operators.\n\n### Implementation and risk channels\n\n- Implementation depends on the clarity and specificity of the Requirement and Compliance sections (the AD requires action “in accordance with the instructions set out in the requirement section” and “at the time mentioned in the compliance section”). If those sections are detailed, they reduce ambiguity; if they are high level, they leave technical discretion to maintenance providers or CASA (introductory paragraph).\n- There is a potential for concentrated costs (owners/operators of affected Beechcraft 200-series aircraft) and more diffuse safety benefits across airspace users; the AD’s structure channels the costs to operators by mandating corrective action (Applicability and Requirement sections).\n\n### What the reader should look for in the full AD text\n\n- The exact inspection criteria, repair instructions and allowable thresholds for scoring damage (Requirement section).\n- The required compliance timeframes and any recurrent inspection intervals (Compliance section).\n- Any approved data or authorised repair methods referenced by the AD (Requirement and Background sections).\n\n(Primary source: this AD issued under subregulation 39.1(1) of CASR 1998; Applicability, Background, Requirement and Compliance sections as referenced in the AD header and introductory paragraphs.)"},"kimi_summary":{"content_quality":"ok","complexity_score":3,"scope_assessment":{"changed":false,"description":"This AD appears to maintain its original narrow scope — addressing a specific safety-of-flight issue on a specific aircraft type. Airworthiness Directives are by design targeted instruments, and this follows the standard pattern of addressing a single unsafe condition identified through service experience or manufacturer notification."},"complexity_factors":["Single specific aircraft type (Beechcraft 200 series) with narrow applicability","Focused on one specific technical issue (rear pressure bulkhead scoring)","Standard AD structure with clearly delineated sections (applicability, requirement, compliance, background)","No complex cross-referencing to other legislation or regulations beyond basic CASR 1998 citation","Technical content would typically reference manufacturer service bulletins or specific measurement criteria, but the core regulatory mechanism is straightforward","Limited to approximately 1-2 pages in typical format"],"plain_english_summary":"This is an **Airworthiness Directive (AD)** — essentially a mandatory safety order issued by the Civil Aviation Safety Authority (CASA) for aircraft.\n\n**What it does:**\nThis directive requires owners and operators of **Beechcraft 200 (Super King Air) series aeroplanes** to inspect and address **scoring damage on the fuselage rear pressure bulkhead**.\n\nThe rear pressure bulkhead is a critical structural component at the back of the aircraft that helps maintain cabin pressure during flight. \"Scoring\" refers to scratches, grooves, or wear marks that could weaken this structure.\n\n**Who it affects:**\n- Owners and operators of Beechcraft 200 series aircraft\n- Maintenance organisations servicing these aircraft\n\n**Why it matters:**\nDamage to the pressure bulkhead could lead to **catastrophic failure of the aircraft structure** or **rapid decompression** at altitude. This AD mandates specific inspections and repairs to prevent accidents.\n\n**What must be done:**\nWhile the full text of requirements, applicability, and compliance sections aren't provided in this excerpt, typically such ADs require:\n- Visual inspection of the rear pressure bulkhead for scoring damage\n- Measurement of any damage found against specified limits\n- Repair or replacement if damage exceeds allowable thresholds\n- Compliance within a specified timeframe (flight hours, calendar time, or both)"}},"importantCases":[],"_links":{"self":"/api/acts/ad-beech-200-71-fuselage-rear-pressure-bulkhead-scoring-damage","history":"/api/acts/ad-beech-200-71-fuselage-rear-pressure-bulkhead-scoring-damage/history","analysis":"/api/acts/ad-beech-200-71-fuselage-rear-pressure-bulkhead-scoring-damage/analysis","conflicts":"/api/acts/ad-beech-200-71-fuselage-rear-pressure-bulkhead-scoring-damage/conflicts","importantCases":"/api/acts/ad-beech-200-71-fuselage-rear-pressure-bulkhead-scoring-damage/important-cases","documents":"/api/acts/ad-beech-200-71-fuselage-rear-pressure-bulkhead-scoring-damage/documents"}}