{"id":"F2006B09759","name":"AD/F28/22 - Passenger Door - Modification","slug":"ad-f28-22-passenger-door-modification","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":54627,"registerId":"commonwealth-F2006B09759-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/F28/22 - Passenger Door - 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)  Fokker F28 Series Aeroplanes\n\n \n\nAD/F28/22 Passenger Door - Modification NK\n\nApplicability: All models with S/Nos. 11003 to 11070, 11072 to 11074, 11991 to 11993. Document:               Fokker SB F28/52-44.\n\nCompliance: Before 31 October 1974.\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":"Based on the instrument text supplied, the scope is narrow and definitive: it applies only to the listed Fokker F28 serial numbers and requires the passenger door modification per the referenced service bulletin to be completed before 31 October 1974 (Applicability; Document; Compliance). The document contains no indication that the scope was broadened or narrowed relative to an earlier or different version; there is no textual evidence in this instrument that the scope has changed."},"complexity_factors":["Narrow, specific applicability by serial numbers (Applicability: \"All models with S/Nos. 11003 to 11070, 11072 to 11074, 11991 to 11993\").","Single required action referenced to an external document rather than described in full (Document: \"Fokker SB F28/52-44\").","Fixed compliance deadline (Compliance: \"Before 31 October 1974\") creates a straightforward timeline.","Regulatory context is simple (single AD issued under CASA / Part 39 framework), but technical details lie outside the AD text (header; Document).","No multiple options, conditions, or phased requirements included in the AD text; it is a single-prescription instrument."],"plain_english_summary":"This airworthiness directive orders owners/operators of specific Fokker F28 airframes (listed serial numbers) to modify the passenger door per Fokker Service Bulletin F28/52-44. The work is mandatory and must be completed by 31 October 1974.\n\nIt concentrates cost and maintenance burden on those operators; technical steps and any alternatives are in the referenced service bulletin and the regulator's AD regime."},"kimi_summary":{"content_quality":"ok","complexity_score":1,"scope_assessment":{"changed":false,"description":"This is a discrete, single-issue airworthiness directive focused specifically on passenger door modifications for a defined subset of Fokker F28 aircraft. It has not expanded beyond its original safety purpose."},"complexity_factors":["Single, specific technical requirement (passenger door modification)","No defined terms section","No cross-references to other legislation beyond the enabling regulations","Simple applicability criteria (specific serial number ranges)","Single compliance deadline with no conditional extensions or exceptions","References only one external technical document (Fokker Service Bulletin)","Extremely short — approximately 100 words of substantive content"],"plain_english_summary":"This is an **Airworthiness Directive (AD)** — essentially a mandatory safety order — issued by Australia's Civil Aviation Safety Authority (CASA) under the Civil Aviation Regulations 1998.\n\n**What it does:**\nIt requires owners and operators of specific Fokker F28 series aircraft to modify the passenger door on their planes.\n\n**Who it affects:**\nOwners and operators of Fokker F28 aircraft with serial numbers 11003 to 11070, 11072 to 11074, and 11991 to 11993.\n\n**What they must do:**\nFollow the technical instructions in **Fokker Service Bulletin F28/52-44** to modify the passenger door.\n\n**When they must do it:**\nBefore 31 October 1974.\n\n**Why it matters:**\nAirworthiness Directives are legally binding safety requirements. They typically issue when a design flaw, manufacturing defect, or operational issue is discovered that could affect flight safety. Non-compliance means the aircraft cannot legally fly in Australian airspace. This particular directive addresses a specific modification needed on the passenger door of these Fokker aircraft — likely to prevent door failure or ensure proper sealing/operation during flight."}},"importantCases":[],"_links":{"self":"/api/acts/ad-f28-22-passenger-door-modification","history":"/api/acts/ad-f28-22-passenger-door-modification/history","analysis":"/api/acts/ad-f28-22-passenger-door-modification/analysis","conflicts":"/api/acts/ad-f28-22-passenger-door-modification/conflicts","importantCases":"/api/acts/ad-f28-22-passenger-door-modification/important-cases","documents":"/api/acts/ad-f28-22-passenger-door-modification/documents"}}