{"id":"F2006B02411","name":"AD/ANSON/14 Amdt 1 - Main Undercarriage Shock Absorber Struts and Radius Rods - Inspection","slug":"ad-anson-14-amdt-1-main-undercarriage-shock-absorber-struts-and-radius-rods-inspection","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":41654,"registerId":"commonwealth-F2006B02411-current","compilationNumber":null,"startDate":"2026-04-01","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/ANSON/14 Amdt 1 - Main Undercarriage Shock Absorber Struts and Radius Rods - 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)  Avro Anson and Avro 19 Series Aeroplanes\n\n \n\nAD/ANSON/14\n\nAmdt 1\n\n\nMain Undercarriage Shock Absorber Struts and Radius Rods - Inspection\n\n\n11/67\n\n \n\nApplicability: Anson and Avro 19.\n\n \n\nDocument: Avro TSB No. 80 paragraph 3.8 and TSB 77. Compliance:  At intervals not exceeding 100 hours time in service.\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":"Based on the text supplied, the directive's scope is limited to mandating inspections of the main undercarriage shock absorber struts and radius rods on Avro Anson and Avro 19 aeroplanes and references specific Avro TSBs; there is no indication in the provided text that this scope has been broadened or narrowed from an earlier intent."},"complexity_factors":["Narrow applicability: applies only to Avro Anson and Avro 19 (Applicability: Anson and Avro 19)","Single clear compliance metric: inspection interval specified as not exceeding 100 hours time in service (Compliance: At intervals not exceeding 100 hours time in service)","Dependence on external technical documents (Avro TSB No. 80 para 3.8 and TSB 77) for inspection procedures and criteria (Document: Avro TSB No. 80 paragraph 3.8 and TSB 77)","Operational enforcement and record-keeping requirement implicit in recurring inspection interval (Compliance: ...100 hours time in service)","Potential need for specialist maintenance skills to inspect specific undercarriage components (inferred from subject-matter: shock absorber struts and radius rods)"],"plain_english_summary":"What this instrument changes, mechanically:\n\n- It requires routine inspections of the main undercarriage shock absorber struts and the radius rods on Avro Anson and Avro 19 aeroplanes. (Applicability: Anson and Avro 19)\n- The inspections must be carried out in line with the referenced technical service material (Avro TSB No. 80 paragraph 3.8 and TSB 77). (Document: Avro TSB No. 80 paragraph 3.8 and TSB 77)\n- The interval for these inspections is specified: not exceeding 100 hours time in service. (Compliance: At intervals not exceeding 100 hours time in service)\n\nStated purpose and source material:\n\n- The directive refers operators to specific Avro technical service bulletins as the procedural or evidentiary basis for the inspections. (Document: Avro TSB No. 80 paragraph 3.8 and TSB 77)\n- The AD is issued under the Commonwealth civil aviation framework and appears in the Civil Aviation Safety Authority schedule of airworthiness directives, making the inspection requirement a regulatory obligation for the named aircraft. (COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY SCHEDULE OF AIRWORTHINESS DIRECTIVES)\n\nWho pays and who decides:\n\n- Aircraft owners or operators are responsible for arranging and paying for the inspections and any follow-on maintenance or repairs required by those inspections. (Compliance: At intervals not exceeding 100 hours time in service; Applicability: Anson and Avro 19)\n- The regulatory authority (Civil Aviation Safety Authority, per the schedule heading) issues the directive and sets the compliance requirement. (COMMONWEALTH OF AUSTRALIA... SCHEDULE OF AIRWORTHINESS DIRECTIVES)\n\nIncentives, compliance burden and implementation mechanics:\n\n- The directive creates a recurring operational cost for affected aircraft: inspection labour, possible downtime, parts and any corrective maintenance discovered during inspections. (Compliance: At intervals not exceeding 100 hours time in service)\n- The requirement channels inspections to the procedures or findings in the two Avro TSB documents cited; operators must follow or rely on that technical material when performing inspections. (Document: Avro TSB No. 80 paragraph 3.8 and TSB 77)\n- Compliance requires record-keeping of inspection intervals (time in service tracking) and the ability to secure qualified personnel or facilities to perform the inspections and any necessary repairs.\n\nTrade-offs, risks and practical effects:\n\n- The measure concentrates obligations (and costs) on owners/operators of Anson and Avro 19 aircraft while the technical guidance is concentrated in the cited Avro TSBs. (Applicability & Document citations)\n- The requirement may increase demand for qualified airframe/undercarriage inspectors and maintenance work for these components; it also imposes regular downtime every 100 hours TIS for inspection activity. (Compliance: At intervals not exceeding 100 hours time in service)\n- Implementation risks include failure to track time-in-service properly, inconsistent application of the referenced TSBs, or limited availability of technicians experienced with these legacy aircraft.\n\nWhat the directive does not state explicitly (but follows mechanically from the text):\n\n- The AD does not itself set remedial actions or thresholds in the text provided; it points to the Avro TSBs for the technical inspection criteria and procedures. (Document: Avro TSB No. 80 paragraph 3.8 and TSB 77)\n- The AD applies only to the named aircraft models; it does not broaden scope beyond Anson and Avro 19 in the text shown. (Applicability: Anson and Avro 19)\n\nNet effect, in plain terms:\n\n- If you operate an Avro Anson or Avro 19, you must have the main undercarriage shock absorber struts and radius rods inspected in accordance with the cited Avro TSBs at intervals of no more than 100 hours time in service. The operator pays for those inspections and any repairs; the regulator requires them and the TSBs supply the technical detail to be followed. (Applicability; Document; Compliance)"},"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a discrete, targeted safety directive for specific vintage aircraft. It has not expanded beyond its original purpose of mandating landing gear inspections for the Anson/Avro 19 fleet."},"complexity_factors":["Extremely short document — approximately 150 words total","Only 2 defined terms implicitly used ('time in service', 'TSB')","No cross-references to other legislation beyond the parent Civil Aviation Regulations 1998","Single compliance requirement with straightforward interval (100 hours)","No conditional logic, exceptions, or nested provisions","Simple applicability test (aircraft type only, no operational conditions)"],"plain_english_summary":"This is an **Airworthiness Directive** (a mandatory safety order) issued by Australia's Civil Aviation Safety Authority for **Avro Anson and Avro 19 aircraft**.\n\n**What it does:**\n- Requires regular **inspections of the main undercarriage shock absorber struts and radius rods** — these are critical parts of the landing gear that absorb impact and maintain wheel alignment.\n\n**Who it affects:**\n- Owners and operators of **Anson and Avro 19 series aeroplanes** (vintage twin-engine aircraft originally from the 1930s-40s).\n\n**What must be done:**\n- Operators must follow **Avro Technical Service Bulletin (TSB) No. 80, paragraph 3.8 and TSB 77** — these are manufacturer instructions for how to inspect these parts.\n- **Compliance interval:** These inspections must happen **every 100 hours of flight time** (\"time in service\" means actual flying hours, not calendar time).\n\n**Why it matters:**\n- Landing gear failures can be catastrophic. This directive ensures potential cracks, corrosion, or wear in these 80+ year-old aircraft designs are caught before they cause accidents. The 100-hour interval reflects the age and stress these vintage components endure."}},"importantCases":[],"_links":{"self":"/api/acts/ad-anson-14-amdt-1-main-undercarriage-shock-absorber-struts-and-radius-rods-inspection","history":"/api/acts/ad-anson-14-amdt-1-main-undercarriage-shock-absorber-struts-and-radius-rods-inspection/history","analysis":"/api/acts/ad-anson-14-amdt-1-main-undercarriage-shock-absorber-struts-and-radius-rods-inspection/analysis","conflicts":"/api/acts/ad-anson-14-amdt-1-main-undercarriage-shock-absorber-struts-and-radius-rods-inspection/conflicts","importantCases":"/api/acts/ad-anson-14-amdt-1-main-undercarriage-shock-absorber-struts-and-radius-rods-inspection/important-cases","documents":"/api/acts/ad-anson-14-amdt-1-main-undercarriage-shock-absorber-struts-and-radius-rods-inspection/documents"}}