{"id":"F2006B03531","name":"AD/BAe 146/83 - Fuselage Underhead Radiused Rivets","slug":"ad-bae-146-83-fuselage-underhead-radiused-rivets","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":43098,"registerId":"commonwealth-F2006B03531-current","compilationNumber":null,"startDate":"2026-04-01","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"AIRWORTHINESS DIRECTIVE","sectionType":"part","heading":"AIRWORTHINESS DIRECTIVE","content":"# AIRWORTHINESS DIRECTIVE\n\n![](image.002.png)\n\n![](image.002.png)  \nFor the reasons set out in the background section, the CASA delegate whose signature appears below issues the following Airworthiness Directive (AD) under subregulation 39.1 (1) of CAR 1998. The AD requires that the action set out in the requirement section (being action that the delegate considers necessary to correct the unsafe condition) be taken in relation to the aircraft or aeronautical product mentioned in the applicability section: (a) in the circumstances mentioned in the requirement section; and (b) in accordance with the instructions set out in the requirement section; and (c) at the time mentioned in the compliance section.","sortOrder":0},{"sectionNumber":"AD/BAe 146/83 Fuselage Underhead Radiuse","sectionType":"part","heading":"AD/BAe 146/83 Fuselage Underhead Radiused Rivets 13/2000","content":"# AD/BAe 146/83 Fuselage Underhead Radiused Rivets 13/2000\n\nApplicability: Model BAe 146 Series 200 aircraft, constructors numbers:\n\nE2022, E2023, E2024, E2025, E2028, E2030, E2031, E2034, E2036, E2039, E2040, E2041, E2042, E2043, E2044, E2045, E2046, E2047, E2048.\n\nRequirement: Inspect in accordance with BAe Systems Mandatory Service Bulletin 53-087 Revision 1 or Revision 2.\n\nCompliance: As specified in the Requirement document.\n\nThis Airworthiness Directive becomes effective on 28 December 2000.\n\nBackground: The manufacturer has received reports of abraded underhead radiused rivets, found during fuselage skin polishing operations following paint removal. An inspection of all underhead radiused rivets on any part of the fuselage which has undergone skin polishing, and an inspection of the skin thickness adjacent to severely abraded rivets, is required.\n\n![Signature of David Villiers, Delegate of the Civil Aviation Safety Authority.](image.003.png)  \n\nDavid Alan Villiers\n\nDelegate of the Civil Aviation Safety Authority 10 November 2000\n\n![](image.002.png)  \n\nThe above AD is notified in the Commonwealth of Australia Gazette on 22 November 2000.","sortOrder":1}],"analysis":{"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":false,"description":"The AD’s scope aligns with its stated purpose: it targets abraded underhead radiused rivets on fuselage areas subjected to skin polishing and limits action to the listed constructor numbers. The AD requires inspections and adjacent skin‑thickness checks and relies on BAe’s Mandatory Service Bulletin for procedural and timing detail (Applicability; Requirement; Background)."},"complexity_factors":["Narrow applicability: specific BAe 146 Series 200 constructor numbers are listed (Applicability).","Substantive action delegated to an external document: inspection procedures and timing are set by BAe Systems Mandatory Service Bulletin 53‑087 Rev 1 or 2 (Requirement; Compliance).","Technical inspection task: visual/measurement checks of rivet condition and adjacent skin thickness may require access after paint removal and competent maintenance personnel (Background; Requirement).","Enforcement and timing are governed by the AD but not spelled out in full within the text—operators must follow the Service Bulletin’s specified compliance schedule (Compliance).","Costs and operational disruption fall on operators for inspections and remedial work; CASA delegate enforces the AD (Requirement; Background)."],"plain_english_summary":"This Airworthiness Directive requires operators of the listed BAe 146 Series 200 aircraft to inspect underhead radiused rivets on fuselage areas that have been skin‑polished and to measure skin thickness beside any severely abraded rivets, using BAe Systems Mandatory Service Bulletin 53‑087 (Rev 1 or 2). CASA issued the AD after reports of abraded rivets found during paint removal. Operators must carry out and pay for the inspections and any repairs; CASA enforces compliance under the AD."},"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This AD maintains its original narrow scope. It addresses a specific manufacturing/maintenance issue (abraded rivets from polishing operations) on a limited fleet of aircraft. There is no evidence of scope creep; the directive precisely targets the reported safety issue without expanding into broader operational requirements."},"complexity_factors":["Very short document (approximately 250 words)","Only 3 operative sections: Applicability, Requirement, and Compliance","Single defined term reference (subregulation 39.1(1) of CAR 1998 — the legal power to issue the directive)","No nested exceptions or conditional logic","Simple, direct instruction: inspect specific aircraft per specific technical document","Limited scope — applies to only 18 specific aircraft by construction number rather than broad categories"],"plain_english_summary":"This Airworthiness Directive requires operators of 18 specific BAe 146 Series 200 aircraft to inspect fuselage rivets after paint removal/skin polishing because some underhead radiused rivets have been abraded. Using BAe Systems Mandatory Service Bulletin 53‑087 (Rev 1 or 2), inspections must check affected rivets and adjacent skin thickness. It took effect 28 December 2000 to protect fuselage structural integrity."},"flash_summary_failed":{"failed":true,"reason":"A positive credit balance is required for all requests, including BYOK, so fallback providers remain available. Add credits at https://vercel.com/d?to=%2F%5Bteam%5D%2F%7E%2Fai%3Fmodal%3Dtop-up to continue.","source":"analysis-cron"}},"importantCases":[],"_links":{"self":"/api/acts/ad-bae-146-83-fuselage-underhead-radiused-rivets","history":"/api/acts/ad-bae-146-83-fuselage-underhead-radiused-rivets/history","analysis":"/api/acts/ad-bae-146-83-fuselage-underhead-radiused-rivets/analysis","conflicts":"/api/acts/ad-bae-146-83-fuselage-underhead-radiused-rivets/conflicts","importantCases":"/api/acts/ad-bae-146-83-fuselage-underhead-radiused-rivets/important-cases","documents":"/api/acts/ad-bae-146-83-fuselage-underhead-radiused-rivets/documents"}}