{"id":"F2006B03941","name":"AD/BEECH 50/18 Amdt 3 - Elevator Control Rod","slug":"ad-beech-50-18-amdt-3-elevator-control-rod","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":43550,"registerId":"commonwealth-F2006B03941-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/BEECH 50/18 Amdt 3 - Elevator Control Rod","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 50 (Twin Bonanza) Series Aeroplanes\n\n \n\nAD/BEECH 50/18\n\nAmdt 3\n\n\nElevator Control Rod 12/78\n\n \n\nApplicability: All model 50 with S/Nos. H-1 to H-11;\n\n \n\nAll models B50 and C50 with S/Nos. CH-12 to CH-360;\n\n \n\nAll models D50, D50A, D50B, D50C and D50E with S/Nos. DH-1 to DH-347; All model E50 with S/Nos. EH-1 to EH-70;\n\nAll model F50 with S/Nos. FH-71 to FH-96;\n\n \n\nAll model G50 with S/Nos. GH-94, GH-97 to GH-119; All model H50 with S/Nos. HH-120 to HH-149;\n\nAll model J50 with S/Nos. JH-150 to JH-176.\n\n \n\nRequirement: Action in accordance with Beechcraft SI No. 0334-152, Rev. III. Compliance:  As per Requirement Document.\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 Amendment 3 to an existing Airworthiness Directive. The scope remains tightly focused on the original safety issue (elevator control rod integrity) for the specific aircraft models originally identified. No expansion beyond original intent."},"complexity_factors":["Very short document (approximately 200 words)","Only 2 substantive requirements: applicability list and reference to external technical document","No defined terms section","No conditional logic or nested exceptions","Single cross-reference to manufacturer service instruction (external technical standard)","Applicability determined by simple serial number ranges"],"plain_english_summary":"This is an **Airworthiness Directive** (AD) — a mandatory safety order issued by Australia's Civil Aviation Safety Authority (CASA). It requires owners and operators of specific **Beechcraft 50 series aircraft** (known as Twin Bonanzas) to inspect or fix a problem with the **elevator control rod**.\n\n**What it does:**\n- Mandates specific maintenance actions on the elevator control rod (a critical component that controls the aircraft's pitch — whether the nose goes up or down)\n- Requires compliance with Beechcraft Service Instruction No. 0334-152, Revision III (the manufacturer's official repair/inspection procedure)\n\n**Who it affects:**\n- Owners and operators of specific Beechcraft 50 models with particular serial numbers, including:\n  - Model 50 (serial H-1 to H-11)\n  - Models B50 and C50 (serial CH-12 to CH-360)\n  - Models D50, D50A, D50B, D50C, D50E (serial DH-1 to DH-347)\n  - Models E50, F50, G50, H50, and J50 (specific serial ranges)\n\n**Why it matters:**\n- Elevator control failures can cause catastrophic loss of control\n- This AD prevents accidents by ensuring a known defect is addressed\n- Non-compliance grounds the aircraft — it cannot legally fly until fixed"},"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":true,"description":"This instrument is titled Amendment 3 to AD/BEECH 50/18, which indicates it modifies a prior version of the same airworthiness directive. The text provided does not state what content was changed by this amendment. The operative scope presented here applies the AD to specified Beechcraft 50-series serial numbers and requires compliance with Beechcraft SI No. 0334-152, Rev. III (Applicability; Requirement; Compliance), but the document does not identify how that scope differs from earlier versions."},"complexity_factors":["Reference to an external technical document (Beechcraft SI No. 0334-152, Rev. III) rather than including procedural detail in the AD itself (Requirement).","Narrow, serial-number-based applicability requiring operators to check aircraft identification (Applicability lists multiple model-specific S/N ranges).","Absence of explicit compliance timing, steps or alternatives in the AD text (Compliance: \"As per Requirement Document\"), which requires consulting the referenced Requirement Document for specifics.","Amendment status (Amdt 3) implies prior versions exist and potential differences must be reconciled by operators/maintenance organisations.","Regulatory bindingness under Civil Aviation Regulations Part 39 creates enforceable obligations though the AD text is concise (header)."],"plain_english_summary":"This AD requires specified Beechcraft 50‑series aeroplanes to have the elevator control rod work completed by following Beechcraft Service Instruction No. 0334‑152, Rev. III. It applies to owners and operators of the listed serial‑numbered aircraft.\n\nIt matters because it enforces a safety fix under Part 39, placing costs, downtime and scheduling responsibility on those operators while deferring technical detail and timing to the manufacturer’s service instruction."}},"importantCases":[],"_links":{"self":"/api/acts/ad-beech-50-18-amdt-3-elevator-control-rod","history":"/api/acts/ad-beech-50-18-amdt-3-elevator-control-rod/history","analysis":"/api/acts/ad-beech-50-18-amdt-3-elevator-control-rod/analysis","conflicts":"/api/acts/ad-beech-50-18-amdt-3-elevator-control-rod/conflicts","importantCases":"/api/acts/ad-beech-50-18-amdt-3-elevator-control-rod/important-cases","documents":"/api/acts/ad-beech-50-18-amdt-3-elevator-control-rod/documents"}}