{"id":"F2006B03992","name":"AD/BEECH 55/46 - Current Limiter Terminal Block Assemblies","slug":"ad-beech-55-46-current-limiter-terminal-block-assemblies","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":43601,"registerId":"commonwealth-F2006B03992-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/BEECH 55/46 - Current Limiter Terminal Block Assemblies","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 55, 58 and 95-55 (Baron) Series Aeroplanes\n\n \n\nAD/BEECH 55/46 Current Limiter Terminal Block Assemblies 10/76\n\nApplicability: All models E55 & E55A S/Nos. TE-969 thru TE-1009, TE-1011 thru TE-1021, TE- 1023 thru TE-1029, TE-1032 thru TE-1034; 58 and 58A S/Nos. TH-441 thru TH-482, TH-484 thru TH-541, TH-543 thru TH-547, TH-549 thru TH-555, TH-557 thru TH- 595, TH-597 thru TH-602, TH-604, TH-605, TH-607 and TH-609.\n\n \n\nRequirement: Action in accordance with Beechcraft SI No. 0754-350.\n\n \n\nNote: FAA AD 76-13-05 refers.\n\n \n\nCompliance: Within 100 hours’ time in service after 29 October 1976.\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\n \n","sortOrder":0}],"analysis":{"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":false,"description":"The text sets its own scope by listing the affected models and serial numbers and prescribing a single required action with a fixed compliance timeframe. The AD does not indicate any amendment, expansion, or narrowing from a prior scope within the text provided, so there is no evidence in the instrument itself that its scope has changed from any earlier intent."},"complexity_factors":["Serial-number-specific applicability (lists many specific serial numbers) — increases administrative complexity for operators confirming applicability (Applicability).","Reference to an external technical document (Beechcraft SI No. 0754-350) — requires access to and execution of a separate service instruction (Requirement).","Fixed compliance clock tied to a historical date and hours-in-service threshold (100 hours after 29 October 1976) — creates a clear but time-constrained compliance obligation (Compliance).","Cross-reference to a foreign regulator's directive (FAA AD 76-13-05) — may require consultation of additional regulatory material (Note).","Absence of explanatory material or alternative compliance paths in the text — leaves technical detail and any potential exceptions to the referenced service instruction or other documents (Requirement; Note)."],"plain_english_summary":"This AD requires owners/operators of certain Beechcraft Baron E55/E55A/58/58A aircraft (specific serial numbers) to carry out the modification/maintenance in Beechcraft Service Instruction No. 0754‑350 within 100 hours’ time-in-service after 29 October 1976. It is mandatory, imposes direct compliance costs and scheduling burdens on operators and their maintenance providers, and cross-references FAA AD 76‑13‑05."},"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a discrete, time-bound safety directive from 1976 addressing a specific technical defect in specific aircraft. It has not expanded beyond its original narrow scope of mandating electrical system inspections for identified Beechcraft Baron models."},"complexity_factors":["Very short document (under 200 words)","Only 4 substantive paragraphs: applicability, requirement, note, and compliance","Single cross-reference to external technical document (Beechcraft SI No. 0754-350)","Simple conditional logic: applies to specific serial numbers only","No defined terms section","No nested exceptions or conditional sub-clauses","Clear, unambiguous compliance deadline"],"plain_english_summary":"This is an **Airworthiness Directive (AD)** — essentially a mandatory safety order issued by Australia's Civil Aviation Safety Authority (CASA). It requires owners and operators of specific **Beechcraft Baron aircraft** (models E55, E55A, 58, and 58A with certain serial numbers) to inspect or fix a problem with **current limiter terminal block assemblies** — electrical components that protect circuits from overload.\n\n**What must be done:** Aircraft owners must follow the instructions in **Beechcraft Service Instruction No. 0754-350** (a technical bulletin from the manufacturer) to address potential safety issues with these electrical components.\n\n**Who it affects:** Owners and operators of approximately 100 specific Beechcraft Baron aeroplanes built in the mid-1970s, identified by their serial numbers.\n\n**When:** The work had to be completed within **100 hours of flying time** after 29 October 1976.\n\n**Why it matters:** Faulty current limiters could cause electrical failures or fire hazards in flight. This directive ensures these specific aircraft were made safe to fly. The note referencing \"FAA AD 76-13-05\" indicates this aligns with a matching US safety order, showing international coordination on aviation safety."}},"importantCases":[],"_links":{"self":"/api/acts/ad-beech-55-46-current-limiter-terminal-block-assemblies","history":"/api/acts/ad-beech-55-46-current-limiter-terminal-block-assemblies/history","analysis":"/api/acts/ad-beech-55-46-current-limiter-terminal-block-assemblies/analysis","conflicts":"/api/acts/ad-beech-55-46-current-limiter-terminal-block-assemblies/conflicts","importantCases":"/api/acts/ad-beech-55-46-current-limiter-terminal-block-assemblies/important-cases","documents":"/api/acts/ad-beech-55-46-current-limiter-terminal-block-assemblies/documents"}}