{"id":"F2006B09648","name":"AD/F100/46 - Replaceable Frame Strut Attachment Bolts","slug":"ad-f100-46-replaceable-frame-strut-attachment-bolts","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":54469,"registerId":"commonwealth-F2006B09648-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"AIRWORTHINESS DIRECTIVE","sectionType":"part","heading":"AIRWORTHINESS DIRECTIVE","content":"# AIRWORTHINESS DIRECTIVE\n\n![](image.001.png)\n\n![](image.001.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.\n\nFokker F100 (F28 Mk 100) Series Aeroplanes","sortOrder":0},{"sectionNumber":"AD/F100/46 Replaceable Frame Strut Attac","sectionType":"part","heading":"AD/F100/46 Replaceable Frame Strut Attachment Bolts 8/2001","content":"# AD/F100/46 Replaceable Frame Strut Attachment Bolts 8/2001\n\nApplicability: All Model F.28 Mk. 0100 and Mk. 0070 aircraft. Requirement: Action in accordance with RLD AD 2001-055.\n\nNote: Fokker Service Bulletin F100-53-096, dated 11 April 2001, refers.\n\nCompliance: Before 20 July 2002.\n\nThis Airworthiness Directive becomes effective on 9 August 2001.\n\nBackground: A Fokker 70/100 operator reported excessive movement of an airframe strut on the left hand side of the fuselage at station 22706. This strut is the connection between the floor beams and the fuselage frame and is designed to be replaceable. This Directive requires a one-time inspection for missing bolts in the replaceable frame struts.\n\n![Signature of David Villiers, Delegate of the Civil Aviation Safety Authority.](image.002.png)  \n\nDavid Alan Villiers\n\nDelegate of the Civil Aviation Safety Authority 27 June 2001\n\n![](image.001.png)  \n\nThe above AD is notified in the Commonwealth of Australia Gazette on 11 July 2001.","sortOrder":1}],"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"},"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This AD remains tightly focused on its original purpose: addressing a specific structural defect (missing bolts in replaceable frame struts) identified in Fokker 70/100 aircraft. The scope has not expanded beyond this single safety issue."},"complexity_factors":["Very short document (approximately 250 words)","Only 2 defined applicability criteria (aircraft models)","Single requirement referencing external document (RLD AD 2001-055) rather than spelling out technical steps","No nested exceptions or conditional logic","Simple compliance deadline (single date, no flight hours/cycles alternative)","Minimal cross-referencing (only to Dutch AD and Fokker Service Bulletin)"],"plain_english_summary":"This AD mandates a one-time inspection of Fokker F100 (F.28 Mk. 0100) and F70 (F.28 Mk. 0070) aircraft to check for missing bolts in replaceable frame struts that attach floor beams to the fuselage. Operators must follow RLD AD 2001-055 and Fokker Service Bulletin F100-53-096.\n\nCompliance is required before 20 July 2002 because reported excessive strut movement indicates missing bolts could undermine airframe structural integrity."},"flash_summary":{"complexity_score":2,"scope_assessment":{"changed":false,"description":"The AD's scope aligns with its stated purpose: it targets the reported unsafe condition on the replaceable frame strut bolts of Fokker F.28 Mk. 0100/0070 aircraft and mandates a one-time inspection across all affected airframes (Applicability, Requirement, Background, Compliance). The text does not expand or narrow that mandate beyond the described inspection and referenced documents."},"complexity_factors":["Narrow applicability to all F.28 Mk. 0100 and Mk. 0070 aircraft (Applicability).","Single corrective action: a one-time inspection for missing bolts in replaceable frame struts (Requirement; Background).","Fixed compliance deadline: inspection must be completed before 20 July 2002 (Compliance).","Dependence on external guidance: action ‘in accordance with RLD AD 2001-055’ and note referencing Fokker Service Bulletin F100-53-096 (Requirement; Note).","Issued and enforced by CASA delegate under CAR 1998 subregulation 39.1(1) (preamble/signature).","Administrative formalities: effective date 9 August 2001 and Gazette notification (sign-off/notice)."],"plain_english_summary":"This Airworthiness Directive requires operators of all Fokker F.28 Mk. 0100 and Mk. 0070 aircraft to perform a one-time inspection for missing bolts at the replaceable frame strut (station 22706), following RLD AD 2001-055 and Fokker Service Bulletin F100-53-096. Compliance is required before 20 July 2002; the CASA delegate issued the AD effective 9 August 2001. Operators bear the inspection cost and must record compliance; the AD responds to a report of excessive strut movement."}},"importantCases":[],"_links":{"self":"/api/acts/ad-f100-46-replaceable-frame-strut-attachment-bolts","history":"/api/acts/ad-f100-46-replaceable-frame-strut-attachment-bolts/history","analysis":"/api/acts/ad-f100-46-replaceable-frame-strut-attachment-bolts/analysis","conflicts":"/api/acts/ad-f100-46-replaceable-frame-strut-attachment-bolts/conflicts","importantCases":"/api/acts/ad-f100-46-replaceable-frame-strut-attachment-bolts/important-cases","documents":"/api/acts/ad-f100-46-replaceable-frame-strut-attachment-bolts/documents"}}