{"id":"F2006B03842","name":"AD/BEECH 35/46 - Beryl Aviation Filtrator Assembly","slug":"ad-beech-35-46-beryl-aviation-filtrator-assembly","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":43451,"registerId":"commonwealth-F2006B03842-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/BEECH 35/46 - Beryl Aviation Filtrator Assembly","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 35 (Bonanza) Series Aeroplanes\n\nAD/BEECH 35/46 Beryl Aviation Filtrator Assembly 4/75\n\nApplicability: Models 35, A35, B35, C35, D35, E35, F35, G35, 35R, H35, J35, K35, M35, N35,\n\nP35, S35, V35, N35A, V35B, which have been modified in accordance with FAA Supplemental Type Certificate No. SA2653WE (Installation of engine crankcase breather and vacuum pump air-oil separator).\n\nRequirement: 1\\. For Beech Models 35, A35, B35, C35, D35, E35, F35, G35 and 35R, remove the Beryl Aviation filtrator assembly P/N B-1119-1 and install either P/N B-1119-M or P/N B- 1119-RM.\n\n    2. For Beech Models S35, V35, V35A and V35B, remove the Beryl Aviation filtrator assembly P/N B-1116-1 and install either P/N B-1116-M or P/N B-1116-RM.\n\n    3. For Beech Models H35, J35, K35, M35, N35 and P35, remove the Beryl Aviation filtrator assembly P/N B-1114-1 and install either P/N B-1114-M or P/N\n\nB-1114-RM.\n\nCompliance: Within 100 hours time in service after 28 February 1974.","sortOrder":0}],"analysis":{"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a discrete, single-issue airworthiness directive focused on a specific safety defect in a specific aircraft modification. It has not expanded beyond its original purpose of mandating replacement of faulty Beryl Aviation filtrator assemblies."},"complexity_factors":["Very short document (approximately 200 words)","Only 3 defined model groupings with specific part number requirements","Single compliance deadline (100 hours time in service after fixed date)","No nested exceptions or conditional logic","No cross-references to other legislation beyond the enabling regulation (Civil Aviation Regulations 1998, Part 39)","Straightforward applicability test: specific aircraft models + specific prior modification"],"plain_english_summary":"This is an **Airworthiness Directive** — a mandatory safety order issued by Australia's Civil Aviation Safety Authority (CASA). It requires owners and operators of specific Beechcraft Bonanza aeroplanes to replace a faulty engine part.\n\n**What it does:**\n- Orders the removal of a specific \"filtrator assembly\" (an engine crankcase breather and air-oil separator made by Beryl Aviation) from certain Beechcraft 35 series aircraft\n- Requires installation of an improved replacement part with a different part number\n\n**Who it affects:**\n- Owners and operators of Beechcraft 35, A35, B35, C35, D35, E35, F35, G35, 35R, H35, J35, K35, M35, N35, P35, S35, V35, N35A, and V35B model aeroplanes\n- Only applies to aircraft that have been modified with a specific American FAA-approved modification (Supplemental Type Certificate SA2653WE)\n\n**Why it matters:**\nAirworthiness Directives are legally binding safety instructions. Non-compliance means the aircraft cannot fly legally. This particular directive addresses a safety issue with the original Beryl Aviation filtrator assemblies, requiring them to be swapped for improved models (-M or -RM suffix versions) within 100 flight hours after 28 February 1974.\n\n**The bottom line:** If you own one of these specific Beechcraft Bonanza models with this particular modification, you must replace this engine part by a deadline measured in flight hours."},"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":false,"description":"The instrument’s scope is self-contained in the text: it applies only to the enumerated Beechcraft 35 variants that have the FAA STC SA2653WE modification and mandates replacement of specified Beryl filtrator P/Ns within the stated timeframe (Applicability; Requirements 1–3; Compliance). The AD text contains no indication that the scope has been broadened or narrowed from that stated."},"complexity_factors":["Applicability limited to aircraft modified under FAA STC SA2653WE — requires verification of modification status (Applicability).","Model‑specific mapping of old P/Ns to permitted replacement P/Ns across three groups of models — increases administrative tracking (Requirements 1–3).","Multiple acceptable replacement part options per model group, requiring selection and procurement by operator (Requirements 1–3).","Fixed compliance window (100 hours TIS after 28 Feb 1974) creates scheduling and operational impact for operators (Compliance).","Clear, prescriptive regulatory action with no alternative compliance path or deferred relief stated in the text (Requirements; Compliance)."],"plain_english_summary":"This Airworthiness Directive requires owners/operators of specified Beechcraft 35‑series aeroplanes modified by FAA Supplemental Type Certificate SA2653WE to remove particular Beryl Aviation “filtrator” assemblies and install specified replacement part numbers. Compliance is required within 100 hours time-in-service after 28 February 1974. Affected parties (owners/operators and maintenance organisations) bear the cost of replacement and must identify the correct part and STC status before compliance (Applicability; Requirements 1–3; Compliance)."}},"importantCases":[],"_links":{"self":"/api/acts/ad-beech-35-46-beryl-aviation-filtrator-assembly","history":"/api/acts/ad-beech-35-46-beryl-aviation-filtrator-assembly/history","analysis":"/api/acts/ad-beech-35-46-beryl-aviation-filtrator-assembly/analysis","conflicts":"/api/acts/ad-beech-35-46-beryl-aviation-filtrator-assembly/conflicts","importantCases":"/api/acts/ad-beech-35-46-beryl-aviation-filtrator-assembly/important-cases","documents":"/api/acts/ad-beech-35-46-beryl-aviation-filtrator-assembly/documents"}}