{"id":"F2006B09750","name":"AD/F28/13G - Retirement Times - Fatigue Critical Components","slug":"ad-f28-13g-retirement-times-fatigue-critical-components","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":115957,"registerId":"commonwealth-F2006B09750-current","compilationNumber":null,"startDate":"2026-04-03","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/F28/13G - Retirement Times - Fatigue Critical Components","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)  Fokker F28 Series Aeroplanes\n\n \n\nAD/F28/13G Retirement Times - Fatigue Critical Components 10/82\n\nCANCELLED.\n\n \n\nThe requirements of this Directive are now covered by the Structural Integrity Program Document Specified in AD/F28/45.\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\n \n","sortOrder":0}],"analysis":{"kimi_summary":{"content_quality":"ok","complexity_score":1,"scope_assessment":{"changed":false,"description":"This is a cancellation notice for a specific airworthiness directive. The scope has not expanded; rather, the directive has been terminated and its functions consolidated into a broader structural integrity program under a different directive (AD/F28/45). This represents normal regulatory housekeeping rather than scope creep."},"complexity_factors":["Document is only 8 lines of substantive content","No defined terms section","No conditional logic or cross-references to legislation (only references another AD)","Simple cancellation notice format — essentially a pointer to replacement documentation","No operative provisions remaining in force"],"plain_english_summary":"**What this is:** This is an **Airworthiness Directive (AD)** — a mandatory safety instruction issued by Australia's Civil Aviation Safety Authority (CASA) that tells aircraft owners and operators what they must do to keep their planes airworthy.\n\n**What it did:** This specific directive (AD/F28/13G) originally set **retirement times** (maximum safe usage limits) for **fatigue critical components** on **Fokker F28 series aircraft**. Fatigue critical components are parts that could fail catastrophically due to metal fatigue from repeated stress during flight cycles. Retirement times are essentially \"use-by dates\" — once a part reaches its flight hour or cycle limit, it must be replaced.\n\n**What happened to it:** This directive has been **cancelled**. Its requirements are now covered by a different directive: **AD/F28/45**, which references a **Structural Integrity Program Document** — a comprehensive plan for monitoring and maintaining the aircraft's structure over its entire lifespan.\n\n**Who it affects:** Operators and maintainers of Fokker F28 aircraft in Australia.\n\n**Why it matters:** Even though cancelled, this document matters for historical compliance records. If an aircraft's maintenance logs reference this directive, operators need to know it was superseded by AD/F28/45 to ensure they're following current rules."},"flash_summary":{"complexity_score":2,"scope_assessment":{"changed":true,"description":"The scope has changed in form: AD/F28/13G no longer operates as the active source of retirement-time requirements. Its substantive coverage has been moved to the Structural Integrity Program Document specified by AD/F28/45. As a result, the direct legal instrument (AD/F28/13G) has been cancelled and any continuing obligations are defined by AD/F28/45 and the referenced program document."},"complexity_factors":["Directive is cancelled (no operative technical requirements remain in this document).","Operative requirements are relocated to another instrument (AD/F28/45), requiring cross-reference to understand obligations.","Narrow subject matter (retirement times for fatigue-critical components on one aeroplane family).","Source text provides no technical detail, intervals, or compliance procedures—assessment depends on the referenced document."],"plain_english_summary":"AD/F28/13G (Retirement Times – Fatigue Critical Components) for Fokker F28 aircraft has been cancelled. Its retirement and fatigue‑critical requirements are now enforced through the Structural Integrity Program Document specified in AD/F28/45. Operators and maintainers must consult AD/F28/45 and that program document to learn the current inspection, retirement and compliance obligations."}},"importantCases":[],"_links":{"self":"/api/acts/ad-f28-13g-retirement-times-fatigue-critical-components","history":"/api/acts/ad-f28-13g-retirement-times-fatigue-critical-components/history","analysis":"/api/acts/ad-f28-13g-retirement-times-fatigue-critical-components/analysis","conflicts":"/api/acts/ad-f28-13g-retirement-times-fatigue-critical-components/conflicts","importantCases":"/api/acts/ad-f28-13g-retirement-times-fatigue-critical-components/important-cases","documents":"/api/acts/ad-f28-13g-retirement-times-fatigue-critical-components/documents"}}