{"id":"F2006B05638","name":"AD/PA-28/84 - Nose Landing Gear - Inspection and Modification Parts I and II","slug":"ad-pa-28-84-nose-landing-gear-inspection-and-modification-parts-i-and-ii","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":135307,"registerId":"commonwealth-F2006B05638-current","compilationNumber":null,"startDate":"2026-04-03","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/PA-28/84 - Nose Landing Gear - Inspection and Modification Parts I and II","content":"COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 \\- 105 CIVIL AVIATION SAFETY AUTHORITY\n\nSCHEDULE OF AIRWORTHINESS DIRECTIVES\n\n![](image.001.png)  \nPiper PA-28 Series Aeroplanes\n\nAD/PA-28/84 Nose Landing Gear \\- Inspection and Modification Parts I and II\n\n  \n5/82\n\n| Applicability: | PART I -  | All models PA-28R-201T Turbo Arrow III S/Nos. 28R-7703001 to 28R- 7803373 and PA-28RT-201T Turbo Arrow IV S/Nos. 28R-7931001 to28R- 8131193.                                                            |\n| -------------- | --------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |\n|                | PART II - | All models PA-28R-200 Arrow II S/Nos. 28R-7635522 to 28R-7635545. All models PA-28R-201 Arrow III S/Nos. 28R-7737001 to 28R-7837317.All models PA-28RT-201 Arrow IV S/Nos. 28R-7918001 to 28R- 8118082. |\n\nDocument: Piper SB No. 724 Parts I and II.\n\nNote: FAA AD 82-06-011 refers.\n\nCompliance: Within 100 hours time in service after 31 May 1982.\n\nBackground: There have been incidents involving inadvertent retraction of the nose landing gear. These incidents were caused by failures of various components of the nose landing gear retraction/extension system including the down lock, link and brace assemblies, actuator housings and attachment brackets.","sortOrder":0}],"analysis":{"flash_summary_failed":{"failed":true,"reason":"Unauthenticated. Configure AI_GATEWAY_API_KEY or use a provider module. Learn more: https://ai-sdk.dev/unauthenticated-ai-gateway","source":"analysis-cron"},"flash_summary":{"complexity_score":5,"scope_assessment":{"changed":false,"description":"The directive's scope matches its stated purpose in the text: it targets inspection and modification of nose landing gear components on the listed PA‑28R/RT serial‑number ranges to address inadvertent retraction caused by component failures. The measures are confined to the models/serials listed and to work described in Piper SB No. 724, with a specified 100‑hour compliance window."},"complexity_factors":["Multiple model variants and distinct serial‑number ranges split between Part I and Part II, so applicability must be checked against serial number lists (Applicability).","Mandates both inspection and modification actions that are to be carried out in accordance with a manufacturer service bulletin (Piper SB No. 724 Parts I & II), creating dependence on that SB for technical steps (Document).","Short, specific compliance window: actions must be completed within 100 hours time‑in‑service after 31 May 1982, which creates scheduling pressure for operators (Compliance).","Several different component types across the nose‑gear retraction/extension system are implicated (down lock; link and brace assemblies; actuator housings; attachment brackets), increasing technical scope and potential parts/skills needed (Background).","Cross‑reference to FAA AD 82‑06‑011 signals parallel regulatory action and may require coordination or matching records (Note).","Separate Part I/Part II treatment means different operator groups face different obligations; checking applicability is nontrivial (Applicability).","The requirement to 'modify' (as distinct from inspect) implies procurement of parts and specialised maintenance procedures as set out in the SB (Document)."],"plain_english_summary":"This Airworthiness Directive requires inspection and modification of the nose landing gear on specified Piper PA‑28R/RT models and serial‑number ranges. Owners/operators of those aircraft must follow Piper Service Bulletin No. 724 (Parts I & II) and complete the required work within 100 hours time‑in‑service after 31 May 1982 to address failures of the down lock, link and brace assemblies, actuator housings and attachment brackets that have caused inadvertent retraction."},"kimi_summary":{"content_quality":"ok","complexity_score":3,"scope_assessment":{"changed":false,"description":"This is a discrete, targeted safety directive addressing a specific mechanical failure mode in specific aircraft models. It has not expanded beyond its original purpose of mandating nose landing gear inspections and modifications for the identified Piper PA-28 variants."},"complexity_factors":["Short, single-purpose directive with clear applicability table","Only 2 defined applicability groups (Part I and Part II) based on model and serial number ranges","Simple compliance condition: 'within 100 hours time in service after 31 May 1982'","No nested exceptions or conditional logic — straightforward mandatory action","References external technical document (Piper SB No. 724) for actual modification details rather than embedding them","Single cross-reference to FAA AD 82-06-011 for additional context"],"plain_english_summary":"Owners and operators of certain Piper PA‑28 Arrow II/III/IV models must inspect and modify the nose landing gear to prevent unintended retraction or collapse. This mandatory CASA Airworthiness Directive responds to incidents caused by failed down locks, link/brace assemblies, actuators, and brackets.\n\nAffected aircraft must complete the work within 100 flight hours after 31 May 1982, following Piper Service Bulletin No. 724; a related FAA AD (82‑06‑011) also applies."}},"importantCases":[],"_links":{"self":"/api/acts/ad-pa-28-84-nose-landing-gear-inspection-and-modification-parts-i-and-ii","history":"/api/acts/ad-pa-28-84-nose-landing-gear-inspection-and-modification-parts-i-and-ii/history","analysis":"/api/acts/ad-pa-28-84-nose-landing-gear-inspection-and-modification-parts-i-and-ii/analysis","conflicts":"/api/acts/ad-pa-28-84-nose-landing-gear-inspection-and-modification-parts-i-and-ii/conflicts","importantCases":"/api/acts/ad-pa-28-84-nose-landing-gear-inspection-and-modification-parts-i-and-ii/important-cases","documents":"/api/acts/ad-pa-28-84-nose-landing-gear-inspection-and-modification-parts-i-and-ii/documents"}}