{"id":"F2006B11147","name":"AD/LEARJET/3 - Rudder Pedal Heel Plates - Inspection","slug":"ad-learjet-3-rudder-pedal-heel-plates-inspection","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":56836,"registerId":"commonwealth-F2006B11147-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/LEARJET/3 - Rudder Pedal Heel Plates - Inspection","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)  Gates Learjet 24 & 25 Series Aeroplanes\n\n \n\nAD/LEARJET/3 Rudder Pedal Heel Plates - Inspection 6/73\n\nApplicability: All model 24 with S/Nos. 24-100 to 24-266 and model 25 with S/Nos. 25-003 to 25-\n\n113.\n\n \n\nDocument: Gates Learjet SB No. 23/24/25-244.\n\n \n\nCompliance: Within 100 hours time in service after 31 July 1973.\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\n \n","sortOrder":0}],"analysis":{"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a discrete, single-issue airworthiness directive from 1973. It has not expanded beyond its original narrow purpose of mandating a specific inspection on specific aircraft models. The scope remains tightly confined to the rudder pedal heel plate inspection requirement."},"complexity_factors":["Extremely short document (approximately 150 words)","No defined terms section — all language is plain operational English","No cross-references to other legislation beyond the parent Civil Aviation Regulations 1998","Single, unambiguous compliance requirement (inspect within 100 hours)","Clear applicability criteria using simple serial number ranges","No conditional logic, exceptions, or nested provisions","References only one external technical document (Service Bulletin)"],"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) that requires specific maintenance action on certain aircraft.\n\n**What it does:** It orders owners and operators of specific Gates Learjet 24 and 25 series aircraft to **inspect the rudder pedal heel plates** (the metal plates at the bottom of the foot controls that steer the plane on the ground). The inspection must follow the procedures in Gates Learjet Service Bulletin No. 23/24/25-244.\n\n**Who it affects:** \n- **Model 24 aircraft** with serial numbers 24-100 through 24-266\n- **Model 25 aircraft** with serial numbers 25-003 through 25-113\n\n**When it must be done:** Within 100 hours of flight time after 31 July 1973.\n\n**Why it matters:** Airworthiness Directives are legally binding safety instructions. If operators don't comply, their aircraft cannot legally fly. This particular AD likely addresses a discovered defect or wear pattern in the rudder pedal heel plates that could affect aircraft control or safety."},"flash_summary":{"complexity_score":2,"scope_assessment":{"changed":false,"description":"Based on the text supplied, the scope is an inspection requirement for rudder pedal heel plates on the listed Learjet 24 and 25 serial numbers (see “Applicability” and “Compliance”). The AD does not indicate any expansion or narrowing relative to that stated inspection obligation; it delegates technical content and remedies to Gates Learjet Service Bulletin No. 23/24/25-244 (see “Document”)."},"complexity_factors":["Narrow applicability limited to specific serial-number ranges (Applicability).","Single, time-limited action: one inspection within 100 hours time in service after a quoted date (Compliance).","Reliance on an external service bulletin for technical procedure and corrective actions (Document).","Lack of detail in the AD text about remedial steps, penalties, or record-keeping increases dependence on the referenced SB for implementation.","Historical compliance deadline tied to a fixed calendar date could create ambiguity for later review or enforcement."],"plain_english_summary":"This Airworthiness Directive mandates a one-time inspection of rudder pedal heel plates on specified Gates Learjet 24 and 25 aircraft, to be carried out per Gates Learjet Service Bulletin No. 23/24/25-244 within 100 hours time-in-service after 31 July 1973. It affects owners/operators of the listed serial-numbered aircraft, who must schedule the inspection and bear the cost; technical and corrective actions are delegated to the referenced service bulletin."}},"importantCases":[],"_links":{"self":"/api/acts/ad-learjet-3-rudder-pedal-heel-plates-inspection","history":"/api/acts/ad-learjet-3-rudder-pedal-heel-plates-inspection/history","analysis":"/api/acts/ad-learjet-3-rudder-pedal-heel-plates-inspection/analysis","conflicts":"/api/acts/ad-learjet-3-rudder-pedal-heel-plates-inspection/conflicts","importantCases":"/api/acts/ad-learjet-3-rudder-pedal-heel-plates-inspection/important-cases","documents":"/api/acts/ad-learjet-3-rudder-pedal-heel-plates-inspection/documents"}}