{"id":"F2006B05411","name":"AD/PA-20/7 Amdt 1 - Fuselage Fabric in Area of Wind Shield Top Attachment Channel - Modification","slug":"ad-pa-20-7-amdt-1-fuselage-fabric-in-area-of-wind-shield-top-attachment-channel-modification","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":46065,"registerId":"commonwealth-F2006B05411-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/PA-20/7 Amdt 1 - Fuselage Fabric in Area of Wind Shield Top Attachment Channel - 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-20 (Pacer) Series Aeroplanes\n\n \n\nAD/PA-20/7\n\nAmdt 1\n\n\nFuselage Fabric in Area of Wind Shield Top Attachment Channel - Modification\n\n\n4/69\n\n \n\nApplicability: All models not incorporating SL 362. Document:  1. Piper SB No 174; or\n\n2. FAA AD 61-6-6.\n\n \n\nCompliance: At intervals not exceeding 100 hours time in service or 6 months whichever occurs first.\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 standard, narrow Airworthiness Directive focused on a specific technical modification for a specific aircraft type. It has not expanded beyond its original safety purpose."},"complexity_factors":["Extremely short document — only a few paragraphs","No defined terms section — all language is plain operational terminology","Single, clear applicability criterion (all models not incorporating SL 362)","Simple compliance schedule (100 hours or 6 months, whichever first)","No nested exceptions, conditional logic, or cross-references to other legislation beyond two external technical documents (Piper SB and FAA AD)","No penalty provisions, appeal mechanisms, or administrative procedures included"],"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 owners and operators of specific aircraft to make a physical modification or inspection.\n\n**Who it affects:** Owners and operators of **Piper PA-20 (Pacer) series aeroplanes** — small, single-engine planes popular in general aviation. Specifically, it applies to all models that have **not** already incorporated a factory service bulletin called \"SL 362\".\n\n**What it requires:**\n- **The problem:** The fabric covering the fuselage (the cloth skin of the plane's body) near where the windshield attaches at the top can deteriorate or fail.\n- **The fix:** A modification to address this fabric issue in the area around the windshield top attachment channel.\n- **How often:** The inspection or modification must be repeated **every 100 hours of flight time or every 6 months** — whichever comes first.\n\n**Why it matters:** This is a **safety-critical requirement**. If the fabric fails in this area, it could compromise the structural integrity of the aircraft or allow water/air infiltration, potentially leading to loss of control or other serious safety hazards. Compliance is **legally mandatory** — you cannot legally fly the aircraft without meeting this requirement.\n\n**Technical references:** The directive points to two documents that describe exactly how to do the work:\n1. Piper Service Bulletin No. 174 (from the manufacturer)\n2. FAA Airworthiness Directive 61-6-6 (the US equivalent safety order)"},"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":true,"description":"The instrument is styled as Amendment 1 to AD/PA-20/7, which indicates it modifies a pre-existing directive. The supplied text does not include the original AD language, so the specific nature of the change (what was added, removed, or altered) cannot be determined from the text provided. The operative mechanics now shown are: an applicability rule excluding models with SL 362 (Applicability), mandatory compliance by reference to Piper SB No. 174 or FAA AD 61-6-6 (Document), and a recurring compliance interval of 100 hours or 6 months (Compliance)."},"complexity_factors":["Cross-references to external technical documents (Piper SB No. 174; FAA AD 61-6-6) rather than detailed procedures in the AD text","Recurring compliance interval (100 hours or 6 months) creating ongoing obligations","Applicability exclusion (models incorporating SL 362) requiring owners to determine status of SL 362 for each airframe","Minimal procedural detail in the AD itself, increasing reliance on external documents and correct interpretation by maintenance personnel"],"plain_english_summary":"This AD mandates recurring work on the fuselage fabric at the windshield top attachment channel for Piper PA‑20s that do not incorporate SL 362, to be done per Piper Service Bulletin No. 174 or FAA AD 61‑6‑6. Inspections/modifications are required every 100 flight hours or six months. Owners/operators of affected PA‑20s bear the cost and scheduling impact."}},"importantCases":[],"_links":{"self":"/api/acts/ad-pa-20-7-amdt-1-fuselage-fabric-in-area-of-wind-shield-top-attachment-channel-modification","history":"/api/acts/ad-pa-20-7-amdt-1-fuselage-fabric-in-area-of-wind-shield-top-attachment-channel-modification/history","analysis":"/api/acts/ad-pa-20-7-amdt-1-fuselage-fabric-in-area-of-wind-shield-top-attachment-channel-modification/analysis","conflicts":"/api/acts/ad-pa-20-7-amdt-1-fuselage-fabric-in-area-of-wind-shield-top-attachment-channel-modification/conflicts","importantCases":"/api/acts/ad-pa-20-7-amdt-1-fuselage-fabric-in-area-of-wind-shield-top-attachment-channel-modification/important-cases","documents":"/api/acts/ad-pa-20-7-amdt-1-fuselage-fabric-in-area-of-wind-shield-top-attachment-channel-modification/documents"}}