{"id":"F2006B09670","name":"AD/F27/100 - Main Entrance Door - Check of Emergency Operation","slug":"ad-f27-100-main-entrance-door-check-of-emergency-operation","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":115804,"registerId":"commonwealth-F2006B09670-current","compilationNumber":null,"startDate":"2026-04-03","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/F27/100 - Main Entrance Door - Check of Emergency Operation","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 F27 Series Aeroplanes\n\n \n\n# AD/F27/100 Main Entrance Door - Check of Emergency Operation\n\nApplicability: All models F27 with S/Nos. as listed in RLD AD 79-106-52. Document:  1. RLD AD 79-106-52; or\n\n2. Fokker SB No. F27-52-61.\n\n \n\nCompliance: Unless already accomplished, before 1 May 1980.\n\n# 5/80\n\n \n\nBackground: There is a possibility of malfunction of the emergency operation of the main cabin door.\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":3,"scope_assessment":{"changed":false,"description":"Based on the text supplied, the AD's scope remains the same as its stated intent: to require a check of the emergency operation of the main entrance door on those Fokker F27 aircraft identified by serial number in RLD AD 79-106-52, to be completed by the specified date. The instrument accomplishes this by referencing the procedural documents to be followed (RLD AD 79-106-52 or Fokker SB F27-52-61) and setting a compliance deadline (before 1 May 1980). There is no indication in the supplied text of any expansion or narrowing of that scope from its original stated aim."},"complexity_factors":["References external documents for required procedures rather than containing step-by-step instructions itself (\"Document\").","Applicability tied to a specific list of serial numbers in another AD, requiring operators to cross-check serial-number lists (\"Applicability\").","Fixed compliance deadline creates scheduling pressure and potential aircraft downtime (\"Compliance\").","The AD provides a safety rationale but does not quantify costs, penalties, or enforcement procedures (\"Background\", entire text).","Potential need for follow-on repairs or parts if the check identifies faults, but no guidance on parts or standards within the AD (\"Compliance\", \"Document\")."],"plain_english_summary":"This AD requires operators of Fokker F27 aeroplanes listed in RLD AD 79-106-52 to have the emergency operation of the main cabin door checked per that RLD AD or Fokker SB F27-52-61, with the check completed (unless already done) before 1 May 1980.  \n\nIt affects owners/operators who must fund inspections and any repairs, may incur aircraft downtime and maintenance costs, and must follow the referenced documents to comply."},"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a discrete, time-bound safety directive from 1980 with a single specific purpose (door inspection). It has not expanded beyond its original scope; it remains a narrow technical airworthiness requirement for a specific aircraft type."},"complexity_factors":["Extremely short document (under 200 words)","Only 2 defined applicability criteria (aircraft model and serial numbers)","Single compliance requirement with clear deadline","No cross-references to other legislation sections","No conditional logic or nested exceptions","Simple binary applicability (applies to listed serial numbers or doesn't)","Background explanation is one sentence"],"plain_english_summary":"This is an **Airworthiness Directive (AD)** — essentially a mandatory safety order issued by Australia's Civil Aviation Safety Authority (CASA) for aircraft.\n\n**What it does:**\nOrders owners and operators of specific **Fokker F27 aircraft** to inspect the main entrance door's emergency operation system. The check must ensure the door can function properly in an emergency evacuation.\n\n**Who it affects:**\n- Owners and operators of Fokker F27 series aeroplanes with specific serial numbers listed in a Dutch aviation document (RLD AD 79-106-52)\n- Essentially, this targets a subset of F27 aircraft that had a known door mechanism defect\n\n**Why it matters:**\nThe emergency door system could malfunction during an emergency evacuation, potentially trapping passengers inside or delaying escape. This directive mandates a fix before a deadline (1 May 1980) to prevent accidents.\n\n**Key details:**\n- **Deadline:** Before 1 May 1980 (unless already done)\n- **Source documents:** Dutch aviation authority directive (RLD AD 79-106-52) or Fokker Service Bulletin F27-52-61\n- **The problem:** Risk that the main cabin door won't work properly in emergency mode"}},"importantCases":[],"_links":{"self":"/api/acts/ad-f27-100-main-entrance-door-check-of-emergency-operation","history":"/api/acts/ad-f27-100-main-entrance-door-check-of-emergency-operation/history","analysis":"/api/acts/ad-f27-100-main-entrance-door-check-of-emergency-operation/analysis","conflicts":"/api/acts/ad-f27-100-main-entrance-door-check-of-emergency-operation/conflicts","importantCases":"/api/acts/ad-f27-100-main-entrance-door-check-of-emergency-operation/important-cases","documents":"/api/acts/ad-f27-100-main-entrance-door-check-of-emergency-operation/documents"}}