{"id":"F2006B11302","name":"AD/ML-M5/5 Amdt 1 - Rudder Bar - Inspection and Modification","slug":"ad-ml-m5-5-amdt-1-rudder-bar-inspection-and-modification","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":57135,"registerId":"commonwealth-F2006B11302-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/ML-M5/5 Amdt 1 - Rudder Bar - Inspection and Modification","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)  Maule M-5 Series Aeroplanes\n\n \n\nAD/ML-M5/5\n\nAmdt 1\n\n\nRudder Bar - Inspection and Modification 10/82\n\n \n\nApplicability: All models with rudder bars which have not been modified in accordance with Maule Aircraft Corporation Service Bulletin No. 2.\n\n \n\nRequirement: Inspect and modify the rudder bar in accordance with Maule Aircraft Corporation Service Bulletin No. 2.\n\n \n\nCompliance: Within the next 100 hours time in service after 31 October, 1982.\n\n \n\nBackground: Reinforcement of the rudder bar in accordance with SB No. 2 reduces the possibility of fatigue cracking and will obviate the necessity for the repetitive special inspections previously required.\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 directive's scope is unchanged from its stated terms: it applies to all M-5 models with rudder bars not modified in accordance with Maule Aircraft Corporation Service Bulletin No. 2, and it requires inspection and modification per that Service Bulletin within the stated 100-hour compliance window. (Applicability; Requirement; Compliance.)"},"complexity_factors":["Narrow technical scope limited to rudder bars on Maule M-5 series (Applicability).","Single, specific mandated action: inspect and modify per Service Bulletin No. 2 (Requirement).","Fixed and simple compliance timeframe: within 100 hours time in service after 31 October 1982 (Compliance).","Dependence on an external technical document (Maule Service Bulletin No. 2) to define the modification increases practical steps required.","No layered exceptions, approvals, or ongoing reporting obligations in the text—low regulatory procedural complexity."],"plain_english_summary":"### What this directive does\n\nThis airworthiness directive tells owners/operators of Maule M-5 series aeroplanes to inspect and, if necessary, modify the rudder bar according to Maule Aircraft Corporation Service Bulletin No. 2. (Applicability; Requirement.)\n\n### Who it affects\n\nIt applies to all Maule M-5 models that have rudder bars which have not already been modified in accordance with Service Bulletin No. 2. The owner/operator of an affected aeroplane is the party who must arrange and pay for the inspection and any modification. (Applicability; Requirement.)\n\n### What must happen and by when\n\nThe inspection and modification must be carried out in accordance with Service Bulletin No. 2 within the next 100 hours time in service after 31 October 1982. That is the fixed compliance window set by the directive. (Requirement; Compliance.)\n\n### Why the change was required (stated reason)\n\nThe directive states that reinforcing the rudder bar per SB No. 2 reduces the possibility of fatigue cracking and will remove the need for the repetitive special inspections that had previously been required. (Background.)\n\n### Practical mechanics, incentives and costs\n\n- Who pays: the aircraft owner/operator pays for obtaining SB No. 2, performing the inspection, and doing any modification (Requirement). \n- Who decides: the directive prescribes the required work (Requirement); the owner/operator decides how and when (subject to the compliance deadline) to have the work carried out. \n- Behaviour change: affected owners/operators will replace repeated special inspections with a one-time reinforcement modification if they follow the Service Bulletin (Background). \n- Costs and trade-offs: there is an upfront maintenance cost and downtime to carry out the modification within the compliance window; the directive claims that this cost substitutes for ongoing recurring inspection costs (Background). \n- Compliance burden: the directive sets a single, concrete compliance obligation and a fixed hours/time deadline (Compliance; Requirement). \n- Implementation risk: the stated safety risk is fatigue cracking of the rudder bar if the reinforcement is not fitted (Background). The directive itself does not specify enforcement measures or penalties. \n\n### Dependencies and practical notes\n\n- The action required is defined by reference to an external document (Maule Aircraft Corporation Service Bulletin No. 2). Affected parties must obtain and follow that Service Bulletin to meet the directive’s requirement. (Requirement.)"},"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a discrete, targeted safety directive focused specifically on rudder bar integrity for one aircraft series. It has not expanded beyond its original technical safety purpose."},"complexity_factors":["Extremely short document (under 200 words)","Only 4 operative sections: Applicability, Requirement, Compliance, and Background","No defined terms section","No cross-references to other legislation or regulations","Single, unambiguous compliance action with clear deadline","No conditional logic, exceptions, or nested provisions","Refers to external technical document (Service Bulletin No. 2) but does not reproduce its contents"],"plain_english_summary":"This is an **Airworthiness Directive** — a mandatory safety order issued by Australia's Civil Aviation Safety Authority (CASA) for specific aircraft.\n\n**What it does:**\nOrders owners and operators of **Maule M-5 series aeroplanes** to inspect and modify the rudder bar (the foot-operated control that steers the plane on the ground) following a specific manufacturer's service bulletin.\n\n**Who it affects:**\nAnyone who owns or operates a Maule M-5 aircraft that **hasn't already been modified** according to Maule Aircraft Corporation Service Bulletin No. 2.\n\n**What must be done:**\n- **Inspect** the rudder bar\n- **Modify** it according to the manufacturer's Service Bulletin No. 2\n- **When:** Within the next 100 hours of flight time after 31 October 1982\n\n**Why it matters:**\nThe rudder bar can develop **fatigue cracking** (tiny cracks caused by repeated stress) that could lead to failure. The modification strengthens the part and eliminates the need for repeated special inspections later on. This is a one-time fix to prevent a potential safety hazard.\n\n**Key point:** This directive replaces ongoing repetitive inspections with a permanent structural improvement."}},"importantCases":[],"_links":{"self":"/api/acts/ad-ml-m5-5-amdt-1-rudder-bar-inspection-and-modification","history":"/api/acts/ad-ml-m5-5-amdt-1-rudder-bar-inspection-and-modification/history","analysis":"/api/acts/ad-ml-m5-5-amdt-1-rudder-bar-inspection-and-modification/analysis","conflicts":"/api/acts/ad-ml-m5-5-amdt-1-rudder-bar-inspection-and-modification/conflicts","importantCases":"/api/acts/ad-ml-m5-5-amdt-1-rudder-bar-inspection-and-modification/important-cases","documents":"/api/acts/ad-ml-m5-5-amdt-1-rudder-bar-inspection-and-modification/documents"}}