{"id":"F2006B05931","name":"AD/PA-36/15 Amdt 1 - Tail Wheel Assembly - Modification","slug":"ad-pa-36-15-amdt-1-tail-wheel-assembly-modification","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":136027,"registerId":"commonwealth-F2006B05931-current","compilationNumber":null,"startDate":"2026-04-03","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/PA-36/15 Amdt 1 - Tail Wheel Assembly - 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)  Piper PA-36 (Pawnee Brave) Series Aeroplanes\n\n \n\nAD/PA-36/15\n\nAmdt 1\n\n\nTail Wheel Assembly - Modification 6/77\n\n \n\nApplicability: All models with S/Nos. 36-7360001 to 36-7660135. Document:  Piper SB No. 506.\n\nCompliance: Within 100 hours time in service after 30 June 1977.\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\n \n","sortOrder":0}],"analysis":{"flash_summary":{"complexity_score":2,"scope_assessment":{"changed":false,"description":"The supplied text states the requirement, the precise serial-number range, the referenced service bulletin, and the compliance timing. The source contains no information indicating any change from an earlier or original intent; it establishes a narrowly scoped mandatory modification and its deadline without broader scope adjustments."},"complexity_factors":["Narrow, specific applicability by aircraft serial number (Applicability: 36-7360001 to 36-7660135).","Single, prescriptive action required (tail wheel assembly modification as per title).","Clear, short compliance window tied to flight hours (100 hours time in service after 30 June 1977).","Dependence on an external technical document for procedural detail (Piper SB No. 506).","Lack of procedural or enforcement detail in the source increases practical uncertainty (no statements about who may perform work or proof of compliance)."],"plain_english_summary":"This directive from the Civil Aviation Safety Authority mandates a tail‑wheel assembly modification on Piper PA‑36 (Pawnee Brave) aircraft with serial numbers 36‑7360001 to 36‑7660135, to be carried out per Piper Service Bulletin No. 506.\n\nAffected owners/operators must schedule and fund the work and complete it within 100 hours time‑in‑service after 30 June 1977; the SB provides the required technical method of compliance."},"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 (tail wheel assembly) on a specific aircraft model range. It has not expanded beyond its original technical safety purpose. The 'Amdt 1' indicates this is an amendment to a previous directive, but this is standard maintenance of airworthiness instructions rather than scope creep."},"complexity_factors":["Extremely short document (single page directive)","Only 4 defined elements: applicability range, document reference, compliance deadline, and modification number","No cross-references to other legislation beyond the parent Civil Aviation Regulations 1998","Simple conditional logic: if you own this specific aircraft model in this serial number range, you must do this specific modification by this deadline","No nested exceptions or conditional exemptions","Single compliance pathway with clear time-based trigger (100 hours after fixed date)"],"plain_english_summary":"This is an **Airworthiness Directive (AD)** — essentially a mandatory safety order issued by Australia's Civil Aviation Safety Authority (CASA). It requires owners and operators of specific **Piper PA-36 Pawnee Brave aircraft** to modify the tail wheel assembly.\n\n**Who it affects:**\n- Owners and operators of Piper PA-36 series aeroplanes with serial numbers between 36-7360001 and 36-7660135\n\n**What it requires:**\n- A modification to the tail wheel assembly (specifically Modification 6/77)\n- The work must follow Piper Service Bulletin No. 506\n- The modification must be completed within **100 hours of flying time** after 30 June 1977\n\n**Why it matters:**\nAirworthiness Directives are legally binding safety instructions. If you don't comply, your aircraft is considered unairworthy — meaning you can't legally fly it. This particular directive addresses a specific safety issue with the tail wheel assembly that could affect aircraft control or safety during ground operations or landing."}},"importantCases":[],"_links":{"self":"/api/acts/ad-pa-36-15-amdt-1-tail-wheel-assembly-modification","history":"/api/acts/ad-pa-36-15-amdt-1-tail-wheel-assembly-modification/history","analysis":"/api/acts/ad-pa-36-15-amdt-1-tail-wheel-assembly-modification/analysis","conflicts":"/api/acts/ad-pa-36-15-amdt-1-tail-wheel-assembly-modification/conflicts","importantCases":"/api/acts/ad-pa-36-15-amdt-1-tail-wheel-assembly-modification/important-cases","documents":"/api/acts/ad-pa-36-15-amdt-1-tail-wheel-assembly-modification/documents"}}