{"id":"F2006B03791","name":"AD/BEECH 33/24 - Beryl Aviation Filtrator Assembly","slug":"ad-beech-33-24-beryl-aviation-filtrator-assembly","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":43387,"registerId":"commonwealth-F2006B03791-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/BEECH 33/24 - 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 33 and 35-33 (Debonair/Bonanza) Series Aeroplanes\n\nAD/BEECH 33/24 Beryl Aviation Filtrator Assembly 10/75\n\nApplicability: Models 35-33, 35-A33, 35-B33, 35-C33, 35-C33A, E33, E33A, E33C, F33, F33A,\n\nF33C, and G33 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 35-33, 35-A33, 35-B33, 35-C33, E33, F33 and G33, remove the Beryl Aviation filtrator assembly P/N B-1114-1 and install either P/N B-1114-M or P/N B-1114-RM.\n\n2. For Beech Models 35C-33A, E33A, E33C, F33A, F33C, 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\nNote: FAA AD No. 75-05-02 refers.\n\nCompliance: Within 100 hours time in service after 28 November 1975.","sortOrder":0}],"analysis":{"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":false,"description":"The directive implements a targeted replacement of two specific Beryl Aviation filtrator assemblies on defined Beechcraft models modified under FAA STC No. SA2653WE. The text prescribes particular replacement part numbers and a compliance timeframe; there is no indication in the provided instrument that the scope was broadened or narrowed relative to its stated requirements."},"complexity_factors":["Technical specificity: exact part numbers (P/N B-1114-1, B-1114-M, B-1114-RM, B-1116-1, B-1116-M, B-1116-RM) are prescribed, requiring precise identification and procurement.","Model-by-model applicability: a detailed list of aircraft models plus a condition that the aircraft must have been modified under FAA STC No. SA2653WE.","Dependency on external instrument: cross-reference to FAA AD No. 75-05-02 for related authority or rationale.","Fixed compliance window: a specific deadline (within 100 hours TIS after 28 Nov 1975) imposes scheduling constraints.","Limited alternative options: only two replacement P/Ns allowed for each original part, narrowing procurement choices."],"plain_english_summary":"This directive orders owners/operators of certain Beechcraft 33/35-33 series aircraft modified under FAA STC SA2653WE to remove specified Beryl Aviation air‑oil separator assemblies and install one of two approved replacement part numbers for each original part, within 100 hours TIS after 28 Nov 1975. It imposes parts purchase, labor and downtime costs, limits acceptable replacements to named P/Ns (creating procurement constraints), and cites FAA AD No. 75-05-02 as related authority."},"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a discrete, single-issue airworthiness directive from 1975 addressing a specific defective part. It has not expanded beyond its original purpose of mandating replacement of the Beryl Aviation filtrator assembly on affected Beechcraft models."},"complexity_factors":["Very short document (under 300 words)","Only 2 conditional requirements based on aircraft model","Simple part number substitutions with clear alternatives","Single compliance deadline with straightforward calculation (100 hours time in service after fixed date)","No nested definitions or cross-references to other legislation (only a note referencing related FAA directive)","Limited applicability criteria (specific models + specific modification history)"],"plain_english_summary":"**What this is:** This is an Airworthiness Directive (AD) — essentially a mandatory safety order issued by Australia's Civil Aviation Safety Authority (CASA). Think of it like a compulsory recall notice, but for aircraft parts rather than cars.\n\n**What it does:** It orders owners and operators of specific Beechcraft Bonanza and Debonair aeroplanes to replace a faulty engine part called the \"Beryl Aviation Filtrator Assembly.\" \n\n**Who it affects:** Owners of specific Beechcraft models (35-33, 35-A33, 35-B33, 35-C33, 35-C33A, E33, E33A, E33C, F33, F33A, F33C, and G33) — but **only** if the aircraft was modified under a specific American aviation certificate (FAA Supplemental Type Certificate No. SA2653WE). This modification added an engine crankcase breather and vacuum pump air-oil separator.\n\n**The specific fix:**\n- For most models: Remove part number B-1114-1 and replace it with either B-1114-M or B-1114-RM\n- For models 35C-33A, E33A, E33C, F33A, and F33C: Remove part number B-1116-1 and replace it with either B-1116-M or B-1116-RM\n\n**When it had to be done:** Within 100 hours of flying time after 28 November 1975.\n\n**Why it matters:** Airworthiness Directives are legally binding. Flying without complying can ground an aircraft or invalidate insurance. This particular AD addresses a safety issue with the original Beryl Aviation filtrator assembly — likely a defect that could cause engine problems or oil contamination. The reference to FAA AD 75-05-02 suggests this was a known problem that American regulators had already identified.\n\n**Key takeaway:** If you owned one of these Beechcrafts with this specific modification, you had to swap out this oil separator part within your next 100 flying hours or face regulatory consequences."}},"importantCases":[],"_links":{"self":"/api/acts/ad-beech-33-24-beryl-aviation-filtrator-assembly","history":"/api/acts/ad-beech-33-24-beryl-aviation-filtrator-assembly/history","analysis":"/api/acts/ad-beech-33-24-beryl-aviation-filtrator-assembly/analysis","conflicts":"/api/acts/ad-beech-33-24-beryl-aviation-filtrator-assembly/conflicts","importantCases":"/api/acts/ad-beech-33-24-beryl-aviation-filtrator-assembly/important-cases","documents":"/api/acts/ad-beech-33-24-beryl-aviation-filtrator-assembly/documents"}}