{"id":"F2006B04084","name":"AD/BEECH 60/23 Amdt 1 - Aft Facing Seat Back Supports","slug":"ad-beech-60-23-amdt-1-aft-facing-seat-back-supports","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":43757,"registerId":"commonwealth-F2006B04084-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/BEECH 60/23 Amdt 1 - Aft Facing Seat Back Supports","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 60 (Duke) Series Aeroplanes\n\n \n\nAD/BEECH 60/23\n\nAmdt 1\n\n\nAft Facing Seat Back Supports 7/74\n\n \n\nApplicability:  All models 60 and A60 equipped with optional aft facing seats. Requirement:  Action in accordance with Beechcraft SI No. 0591-314, Rev. 1. Compliance:   Within 100 hours’ time in service after 7 June 1974.\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":3,"scope_assessment":{"changed":true,"description":"The instrument is labelled as Amendment 1 (Amdt 1), indicating it amends an earlier AD. The document provided does not specify which provisions were changed from the original AD, only the current applicability (all Model 60 and A60 with optional aft‑facing seats), the requirement to follow Beechcraft SI No. 0591‑314 Rev. 1, and the 100‑hour compliance window after 7 June 1974. To determine precisely how the scope has changed, the original AD text must be compared with this amended text; that comparison is not contained in the supplied document."},"complexity_factors":["Short, focused scope limited to specific models and optional equipment (Applicability).","Mandates compliance by reference to an external manufacturer service instruction rather than including technical detail in the AD (Requirement).","A fixed, short compliance window measured in flight hours (100 hours after 7 June 1974) which affects scheduling but is simple to calculate (Compliance).","Lack of in‑text alternative compliance procedures or approval pathways increases dependence on external documents or regulator guidance (Requirement).","Minimal text and limited operative provisions reduce legal complexity but shift technical complexity to the referenced service instruction."],"plain_english_summary":"This directive mandates that owners/operators of Beechcraft Model 60 and A60 aeroplanes fitted with the optional aft‑facing seats carry out the work specified in Beechcraft Service Instruction No. 0591‑314, Rev. 1, within 100 hours’ time‑in‑service after 7 June 1974. It affects those owners/operators and the maintenance organisations who must perform the work; costs and operational downtime fall on owners, and the AD points to the manufacturer’s service instruction as the sole compliance method."},"kimi_summary":{"content_quality":"ok","complexity_score":1,"scope_assessment":{"changed":false,"description":"This is a discrete, single-issue airworthiness directive focused specifically on seat back supports for one aircraft type. It has not expanded beyond its original narrow safety purpose."},"complexity_factors":["Extremely short document (under 150 words)","No defined terms section","No cross-references to other legislation beyond a single service instruction reference","Simple conditional logic: applies to all specified models with optional equipment","Single compliance requirement with clear deadline","No exceptions, exemptions, or nested conditions"],"plain_english_summary":"**What this is:** This is an Airworthiness Directive (AD) — essentially a mandatory safety notice issued by Australia's Civil Aviation Safety Authority (CASA) for specific aircraft.\n\n**What it does:** It requires owners and operators of certain Beechcraft Duke aeroplanes (models 60 and A60) to inspect or fix the supports for rear-facing passenger seats. The directive references a specific Beechcraft Service Instruction (SI No. 0591-314, Rev. 1) that details what needs to be done.\n\n**Who it affects:** Anyone who owns or operates a Beechcraft 60 or A60 Duke aircraft that has the optional rear-facing seats installed.\n\n**Why it matters:** Seat back supports are critical safety equipment. If they fail during turbulence or an accident, passengers could be seriously injured. This AD ensures these supports meet safety standards.\n\n**The deadline:** The work had to be completed within 100 hours of flying time after 7 June 1974. (Note: This is a historical directive from 1974, so compliant aircraft would have completed this long ago.)"}},"importantCases":[],"_links":{"self":"/api/acts/ad-beech-60-23-amdt-1-aft-facing-seat-back-supports","history":"/api/acts/ad-beech-60-23-amdt-1-aft-facing-seat-back-supports/history","analysis":"/api/acts/ad-beech-60-23-amdt-1-aft-facing-seat-back-supports/analysis","conflicts":"/api/acts/ad-beech-60-23-amdt-1-aft-facing-seat-back-supports/conflicts","importantCases":"/api/acts/ad-beech-60-23-amdt-1-aft-facing-seat-back-supports/important-cases","documents":"/api/acts/ad-beech-60-23-amdt-1-aft-facing-seat-back-supports/documents"}}