{"id":"F2006B02738","name":"AD/B727/38 - Main Landing Gear Actuator Link Assembly - Replacement","slug":"ad-b727-38-main-landing-gear-actuator-link-assembly-replacement","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":42080,"registerId":"commonwealth-F2006B02738-current","compilationNumber":null,"startDate":"2026-04-01","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/B727/38 - Main Landing Gear Actuator Link Assembly - Replacement","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)  Boeing 727 Series Aeroplanes\n\n \n\nAD/B727/38  Main Landing Gear Actuator Link Assembly - Replacement\n\n\n2/67\n\n \n\nApplicability: All models. Document: Boeing SB No. 32-97. Compliance: Forthwith.\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\n \n\n \n\n \n\n \n","sortOrder":0}],"analysis":{"flash_summary":{"complexity_score":2,"scope_assessment":{"changed":false,"description":"The supplied text sets out a clear, narrow requirement (replacement of the main landing gear actuator link assembly) with application to all Boeing 727 models and immediate compliance. There is no indication in the provided excerpt that the scope has been altered from the instrument's apparent objective: it prescribes a mandatory replacement for the stated fleet and references Boeing SB No. 32-97 for technical instructions."},"complexity_factors":["Very short and specific directive: single mandatory action (replacement) stated plainly.","Wide applicability: applies to all Boeing 727 models increases operational scope.","External technical dependence: relies on Boeing SB No. 32-97 for procedural detail, shifting technical complexity to that document.","Immediate deadline: the word \"Forthwith\" compresses time for logistics and planning, increasing practical complexity.","Lack of explanatory material in the supplied text: absence of rationale or compliance alternatives means implementers must infer context or consult other sources."],"plain_english_summary":"This mandatory directive requires all Boeing 727 operators to replace the main landing gear actuator link assembly using Boeing Service Bulletin No. 32‑97, with compliance required forthwith. It falls on owners/operators (and their maintenance organisations) to obtain the bulletin, procure parts, perform the work, and bear the costs and operational disruption. The instrument itself gives no explicit rationale, exemptions, or alternative-compliance route."},"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a discrete, targeted safety directive focused on a specific mechanical component. It has not expanded beyond its original purpose of addressing a known defect in the Boeing 727 landing gear system. The scope remains precisely limited to the actuator link assembly replacement."},"complexity_factors":["Extremely short document — only 4 substantive lines of regulatory text","No defined terms section — relies entirely on external Boeing technical document (SB 32-97)","No conditional logic or exceptions — single mandatory action applicable to all models","No cross-references to other legislation beyond generic enabling regulation (CAR 1998 Part 39)","Simple command structure: applicability + document reference + compliance deadline"],"plain_english_summary":"**What this is:** This is an **Airworthiness Directive (AD)** — a mandatory safety order issued by Australia's Civil Aviation Safety Authority (CASA) under the Civil Aviation Regulations 1998.\n\n**What it does:** It requires the **replacement of the main landing gear actuator link assembly** on all Boeing 727 series aircraft.\n\n**Who it affects:** Anyone who operates, maintains, or owns Boeing 727 aeroplanes in Australia.\n\n**Why it matters:** Landing gear failures can be catastrophic. This directive addresses a specific safety defect in the actuator link assembly — a critical component that helps extend and retract the main landing gear. The directive references Boeing Service Bulletin No. 32-97, which contains the technical instructions for the replacement.\n\n**Key requirements:**\n- **Applicability:** All Boeing 727 models\n- **Compliance deadline:** \"Forthwith\" — meaning immediately, without delay\n- **Action required:** Replace the main landing gear actuator link assembly as specified in Boeing Service Bulletin 32-97\n\n**In short:** If you're flying or fixing a Boeing 727 in Australia, you must replace this specific landing gear part right away to keep the aircraft airworthy."}},"importantCases":[],"_links":{"self":"/api/acts/ad-b727-38-main-landing-gear-actuator-link-assembly-replacement","history":"/api/acts/ad-b727-38-main-landing-gear-actuator-link-assembly-replacement/history","analysis":"/api/acts/ad-b727-38-main-landing-gear-actuator-link-assembly-replacement/analysis","conflicts":"/api/acts/ad-b727-38-main-landing-gear-actuator-link-assembly-replacement/conflicts","importantCases":"/api/acts/ad-b727-38-main-landing-gear-actuator-link-assembly-replacement/important-cases","documents":"/api/acts/ad-b727-38-main-landing-gear-actuator-link-assembly-replacement/documents"}}