{"id":"F2006B03961","name":"AD/BEECH 55/10 Amdt 2 - Elevator Trim Tab System","slug":"ad-beech-55-10-amdt-2-elevator-trim-tab-system","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":43570,"registerId":"commonwealth-F2006B03961-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/BEECH 55/10 Amdt 2 - Elevator Trim Tab System","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 55/10\n\nAmdt 2\n\n\nElevator Trim Tab System 7/75\n\n \n\nApplicability: All models as listed in the Requirement Document. Requirement: Action in accordance with Beechcraft SI No. 0610-152, Rev. 2. Compliance:              As detailed in the 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\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":4,"scope_assessment":{"changed":true,"description":"This entry is labelled Amendment 2 to AD/BEECH 55/10, and the operative Requirement references Beechcraft SI No. 0610-152, Revision 2. The instrument therefore updates the AD to refer to the Rev. 2 service instruction and is presented as a successor to earlier text. The AD continues to require that affected aircraft (those listed in the Requirement Document) be maintained in accordance with the specified Beechcraft service instruction; the detailed scope (which specific serial numbers or sub-models are affected, and the precise compliance timing) is defined in the external Requirement Document rather than in the AD text itself (see \"Applicability\", \"Requirement\", \"Compliance\")."},"complexity_factors":["Short primary instrument with substantive detail delegated to external documents (Requirement Document; Beechcraft SI No. 0610-152, Rev. 2) — increases reliance on other texts for full understanding (see \"Applicability\", \"Requirement\", \"Compliance\").","Applicability defined by an external \"Requirement Document\" rather than listed in-text, which requires users to obtain that document to determine whether a given aircraft is affected (see \"Applicability\").","Technical actions are specified by a manufacturer service instruction (SI) rather than by precise regulatory text, so technical complexity sits in the SI (see \"Requirement\").","Compliance timing and procedures are described only as \"As detailed in the Requirement Document\", creating potential ambiguity about deadlines and acceptable methods until that document is consulted (see \"Compliance\").","Regulatory amendment status (Amdt 2) indicates prior versions exist; users may need to compare versions to confirm what changed.","Practical implementation requires coordination between regulator, operator and maintenance organisations (implied by structure of directive)."],"plain_english_summary":"What this instrument is: This is Airworthiness Directive AD/BEECH 55/10 Amendment 2, issued under the Civil Aviation Regulations 1998 (Part 39) by the Civil Aviation Safety Authority (CASA). It addresses the elevator trim tab system on Beechcraft 55, 58 and 95-55 (Baron) series aeroplanes and is labelled \"Elevator Trim Tab System 7/75\".\n\nWhat it requires, mechanically: The directive makes compliance mandatory for the aeroplanes listed in the Requirement Document (see \"Applicability\"). It requires operators to carry out the specific work described in Beechcraft Service Instruction No. 0610-152, Revision 2 (see \"Requirement\"). The timing, method and other details of compliance are set out in the Requirement Document (see \"Compliance\").\n\nWho decides and who acts: CASA is the issuing authority (header: Civil Aviation Safety Authority). Aircraft owners/operators of the models listed in the Requirement Document are the parties required to have the work done. The technical steps to be performed are those contained in the Beechcraft Service Instruction No. 0610-152, Rev. 2.\n\nWho pays and what changes for them: The owners/operators of affected aircraft will incur the costs of performing the required actions (parts, labor, and any associated downtime). Maintenance organisations contracted by those owners/operators will carry out the tasks specified in the Beechcraft service instruction.\n\nHow it is implemented and where discretion lies: The directive itself is short and delegates the operational detail to two documents: (1) the Requirement Document, which lists affected models and sets compliance particulars (Applicability; Compliance), and (2) Beechcraft SI No. 0610-152, Rev. 2, which prescribes the technical actions (Requirement). Interpretation of timing, inspection intervals, and exact work steps therefore depends on those external documents rather than the text of the AD itself.\n\nPractical effects and trade-offs to watch for: Because the AD points to a separate service instruction for the required actions, the immediate administrative burden on operators is to obtain and follow that SI and the Requirement Document. That typically involves scheduling maintenance (possible aircraft downtime), purchasing any required parts or components, and keeping records of compliance. The AD shifts the detailed technical judgment to the published service instruction; operators will need to rely on Beechcraft’s procedures, and maintenance providers will implement them. The directive creates concentrated obligations on the owners/operators of the listed Beechcraft models and produces demand for maintenance work; the text does not specify cost-sharing, subsidies or exemptions.\n\nWhere to look for the specific steps: The AD text itself identifies the mandatory instruction (Beechcraft SI No. 0610-152, Rev. 2) and refers implementers to the Requirement Document for applicability and compliance timing. To know exactly what inspections or replacements are required, and by when, consult those two documents cited under \"Applicability\", \"Requirement\" and \"Compliance\" in the AD."},"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a standard, narrow Airworthiness Directive focused on a specific mechanical system in specific aircraft models. It has not expanded beyond its original safety purpose."},"complexity_factors":["Extremely short document (approximately 150 words)","Only 1 substantive requirement referencing an external technical document","No defined terms section — relies entirely on external Beechcraft Service Instruction","No conditional logic or nested exceptions","Single applicability criterion (aircraft model series)","Minimal cross-referencing (only to CASR Part 39 and one Beechcraft document)"],"plain_english_summary":"This is an **Airworthiness Directive (AD)** issued by Australia's Civil Aviation Safety Authority (CASA). It applies to specific **Beechcraft Baron aircraft** (models 55, 58, and 95-55 series).\n\n**What it does:**\n- Requires owners and operators of these aircraft to inspect and/or modify the **elevator trim tab system** — the part of the tail that helps pilots control the plane's pitch (nose up/down) without constant pressure on the control wheel.\n- The directive references a specific **Beechcraft Service Instruction** (SI No. 0610-152, Revision 2) which contains the detailed technical steps.\n\n**Who it affects:**\n- Owners and operators of Beechcraft Baron 55, 58, and 95-55 series aeroplanes.\n- Maintenance engineers who work on these aircraft.\n\n**Why it matters:**\n- Elevator trim tab failures can cause sudden, unexpected pitch changes that may lead to loss of control. This AD ensures a known safety issue is addressed before it causes an accident.\n- Compliance is **mandatory** — aircraft cannot legally fly until the required action is completed by the deadline specified in the referenced document.\n\n**Key terms explained:**\n- **Airworthiness Directive (AD):** A legally enforceable notice from CASA requiring specific maintenance or inspections to correct unsafe conditions in aircraft.\n- **Elevator trim tab:** A small adjustable surface on the elevator (the moving part of the horizontal tail) that reduces the force pilots need to hold to keep the aircraft level.\n- **Compliance:** The deadline by which the required action must be finished."}},"importantCases":[],"_links":{"self":"/api/acts/ad-beech-55-10-amdt-2-elevator-trim-tab-system","history":"/api/acts/ad-beech-55-10-amdt-2-elevator-trim-tab-system/history","analysis":"/api/acts/ad-beech-55-10-amdt-2-elevator-trim-tab-system/analysis","conflicts":"/api/acts/ad-beech-55-10-amdt-2-elevator-trim-tab-system/conflicts","importantCases":"/api/acts/ad-beech-55-10-amdt-2-elevator-trim-tab-system/important-cases","documents":"/api/acts/ad-beech-55-10-amdt-2-elevator-trim-tab-system/documents"}}