{"id":"F2006B04067","name":"AD/BEECH 56/5 - Pneumatic Pressure Regulator","slug":"ad-beech-56-5-pneumatic-pressure-regulator","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":43703,"registerId":"commonwealth-F2006B04067-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/BEECH 56/5 - Pneumatic Pressure Regulator","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)  Beechcraft 56TC (Turbo Baron) Series Aeroplanes\n\n \n\nAD/BEECH 56/5 Pneumatic Pressure Regulator 2/69\n\nApplicability: All models fitted with Beech Pneumatic De-icer System and Beech model B5 Auto- pilot.\n\n \n\nRequirement: Action in accordance with Brittain Industries Inc. SB No. 68-1 Rev. A.\n\n \n\nNote: FAA AD 68-14-1 refers.\n\n \n\nCompliance: Before 1 September 1971.\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":2,"scope_assessment":{"changed":false,"description":"This is a discrete, time-bound safety directive issued in 1969 (as indicated by '2/69' in the reference number) with a specific compliance deadline in 1971. It has not expanded beyond its original narrow scope of addressing a specific pneumatic pressure regulator issue in a limited aircraft fleet. The document represents a complete, closed regulatory action rather than an evolving legislative instrument."},"complexity_factors":["Extremely short document (approximately 150 words)","No defined terms section — all terminology is standard aviation nomenclature","Single, unambiguous compliance requirement referencing an external technical document","No conditional logic, exceptions, or nested provisions","Clear applicability criteria using simple 'AND' conjunction","Single deadline with no alternative compliance methods or phased implementation"],"plain_english_summary":"This is an **Airworthiness Directive (AD)** — essentially a mandatory safety order issued by Australia's Civil Aviation Safety Authority (CASA) under the Civil Aviation Regulations 1998.\n\n**What it does:**\nThis directive (AD/BEECH 56/5) requires owners and operators of specific Beechcraft aeroplanes to take corrective action on the **pneumatic pressure regulator** — a component that controls air pressure in the aircraft's de-icing system.\n\n**Who it affects:**\n- **Aircraft:** All models of the Beechcraft 56TC (Turbo Baron) series\n- **Specifically:** Those fitted with:\n  - Beech Pneumatic De-icer System (equipment that prevents ice buildup using compressed air), AND\n  - Beech model B5 Autopilot (an automatic flight control system)\n\n**What must be done:**\nOperators must follow the instructions in **Brittain Industries Inc. Service Bulletin No. 68-1 Rev. A** — a technical notice from the equipment manufacturer detailing the required inspection, repair, or replacement procedures.\n\n**When:**\nThe work had to be completed **before 1 September 1971**.\n\n**Why it matters:**\nAirworthiness Directives are legally binding safety requirements. They typically issue when a defect, malfunction, or unsafe condition is discovered that could affect flight safety. Non-compliance means the aircraft cannot legally fly. This particular AD addresses potential failures in the pressure regulation system that could compromise the de-icing capability or autopilot function — both critical for safe flight in icing conditions."},"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":false,"description":"Based on the text provided, the AD sets a corrective requirement for specified Beechcraft 56TC aeroplanes (those fitted with the Beech Pneumatic De-icer System and B5 Autopilot), prescribes compliance with Brittain Industries Inc. SB No. 68-1 Rev. A, and specifies a compliance date. The instrument itself does not indicate any alteration of scope from its stated purpose; there is no text in the supplied document showing that the AD widens or narrows its applicability or requirements beyond what is expressly stated under 'Applicability', 'Requirement' and 'Compliance'."},"complexity_factors":["Reliance on an external technical document (Brittain Industries Inc. SB No. 68-1 Rev. A) for the substance of the required work (Requirement).","Applicability requires checking aircraft equipment fitment (Beech Pneumatic De-icer System and Beech model B5 Autopilot) for each aeroplane, which is an administrative and technical determination (Applicability).","A firm compliance deadline (before 1 September 1971) creates scheduling and operational pressure for owners/operators (Compliance).","Cross-reference to an FAA AD introduces a secondary source of related requirements or context that operators may need to consult (Note).","The AD is brief and does not state alternative means of compliance or provide technical detail, so implementers must obtain and rely on the service bulletin to understand costs and parts required (Requirement)."],"plain_english_summary":"This Airworthiness Directive requires owners/operators of Beechcraft 56TC (Turbo Baron) aeroplanes fitted with the Beech pneumatic de‑icer and B5 autopilot to complete the corrective work specified in Brittain Industries Service Bulletin No. 68‑1 Rev. A by 1 September 1971.  \n\nCASA enforces the AD (cross‑referencing FAA AD 68‑14‑1); owners bear cost, maintenance shops perform the work, and compliance is judged by completion of the service bulletin."}},"importantCases":[],"_links":{"self":"/api/acts/ad-beech-56-5-pneumatic-pressure-regulator","history":"/api/acts/ad-beech-56-5-pneumatic-pressure-regulator/history","analysis":"/api/acts/ad-beech-56-5-pneumatic-pressure-regulator/analysis","conflicts":"/api/acts/ad-beech-56-5-pneumatic-pressure-regulator/conflicts","importantCases":"/api/acts/ad-beech-56-5-pneumatic-pressure-regulator/important-cases","documents":"/api/acts/ad-beech-56-5-pneumatic-pressure-regulator/documents"}}