{"id":"F2006B02299","name":"AD/AL 60/3 - Installation of Limit Stops In Seat Rails","slug":"ad-al-60-3-installation-of-limit-stops-in-seat-rails","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":41529,"registerId":"commonwealth-F2006B02299-current","compilationNumber":null,"startDate":"2026-04-01","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/AL 60/3 - Installation of Limit Stops In Seat Rails","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)  Aermacchi - Lockheed AL 60 Series Aeroplanes\n\n \n\nAD/AL 60/3 Installation of Limit Stops In Seat Rails 6/63\n\nApplicability: Models AL 60 and AL 60B.\n\n \n\nDocument: Aermacchi Lockheed 60 Mod. Bulletin No. 10. Compliance: Before 1 September 1971.\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\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 a discrete, single-issue directive focused solely on seat rail modifications. It has not expanded beyond its original narrow safety purpose. The document appears complete as issued in 1963, with no evidence of subsequent amendments or scope creep."},"complexity_factors":["Extremely short document — approximately 100 words of substantive content","No defined terms section; all language is plain technical aviation terminology","No cross-references to other legislation beyond the enabling Civil Aviation Regulations 1998","Single, unambiguous compliance requirement with a fixed deadline","No conditional logic, exceptions, or nested provisions","Simple binary applicability test (Model AL 60 or AL 60B? Yes/No)"],"plain_english_summary":"This is an **Airworthiness Directive (AD)** — essentially a mandatory safety order issued by Australia's Civil Aviation Safety Authority (CASA) under the Civil Aviation Regulations 1998.\n\n**What it does:**\nIt requires owners and operators of specific Aermacchi-Lockheed aircraft (the AL 60 and AL 60B models) to install \"limit stops\" in the seat rails. These are physical barriers that prevent seats from sliding too far forward or backward during flight.\n\n**Who it affects:**\nAnyone who owns, operates, or maintains these particular Italian-designed utility aircraft in Australia.\n\n**Why it matters:**\nWithout these stops, aircraft seats could shift unexpectedly — potentially jamming controls, blocking emergency exits, or causing pilot incapacitation. The directive references a manufacturer bulletin (Mod. Bulletin No. 10) and set a hard deadline of **1 September 1971** for compliance.\n\n**Key point:** This is a **historical directive** from 1963 (the \"6/63\" indicates June 1963). While it may still technically apply to any surviving aircraft of this type, it primarily serves as an archived safety record showing how aviation regulators addressed specific mechanical risks decades ago."},"flash_summary":{"complexity_score":2,"scope_assessment":{"changed":false,"description":"The AD as presented sets a single, specific technical requirement for Models AL 60 and AL 60B, references a single modification bulletin for the method, and specifies a compliance date. There is no indication in the provided text that the scope has been expanded, narrowed, or otherwise altered from its original, stated requirement."},"complexity_factors":["Narrow applicability limited to two aircraft models (AL 60 and AL 60B). (Applicability)","Single, discrete technical action required (installation of limit stops in seat rails). (Title)","Clear compliance deadline provided (before 1 September 1971). (Compliance)","Technical execution delegated to an external document (Aermacchi Lockheed 60 Mod. Bulletin No. 10), requiring operators to obtain and follow that bulletin. (Document)","Operational impacts limited to cost, downtime and procurement of parts/skills rather than changes to regulatory status or ongoing obligations. (Applicability, Compliance)"],"plain_english_summary":"This AD mandates installation of limit stops in the seat rails of Aermacchi‑Lockheed AL 60 and AL 60B aircraft, to be carried out per Aermacchi Lockheed 60 Mod. Bulletin No. 10 and completed by 1 September 1971. It affects owners/operators (who pay for parts, labour and downtime) and the maintenance organisations that perform the work, and is a time‑bound safety requirement issued by the aviation authority."}},"importantCases":[],"_links":{"self":"/api/acts/ad-al-60-3-installation-of-limit-stops-in-seat-rails","history":"/api/acts/ad-al-60-3-installation-of-limit-stops-in-seat-rails/history","analysis":"/api/acts/ad-al-60-3-installation-of-limit-stops-in-seat-rails/analysis","conflicts":"/api/acts/ad-al-60-3-installation-of-limit-stops-in-seat-rails/conflicts","importantCases":"/api/acts/ad-al-60-3-installation-of-limit-stops-in-seat-rails/important-cases","documents":"/api/acts/ad-al-60-3-installation-of-limit-stops-in-seat-rails/documents"}}