{"id":"F2006B03345","name":"AD/B767/17 - Entry and Service door Mid Liner Dust Covers","slug":"ad-b767-17-entry-and-service-door-mid-liner-dust-covers","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":42782,"registerId":"commonwealth-F2006B03345-current","compilationNumber":null,"startDate":"2026-04-01","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/B767/17 - Entry and Service door Mid Liner Dust Covers","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)  Boeing 767 Series Aeroplanes\n\n \n\nAD/B767/17 Entry and Service door Mid Liner Dust Covers 3/88\n\nApplicability: All model 767 listed in the Requirement document. Requirement: Action in accordance with Boeing SB 767-25A0092.\n\nNote: FAA AD 87-25-09 refers.\n\n \n\nCompliance: Inspect at intervals not to exceed 90 days until modified. Modify prior to 19 June 1989.\n\n \n\nBackground: A loose inner window (dust cover) interfered with the movement of the upper liner and prevented the door from opening fully.\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":2,"scope_assessment":{"changed":false,"description":"This is a discrete, time-bound safety directive issued in 1988 (as indicated by '3/88' and the 1989 compliance deadline). It addresses one specific mechanical defect in one aircraft type. There is no evidence of scope creep; it remains precisely targeted at the dust cover issue described in the background."},"complexity_factors":["Extremely short document (under 200 words)","Only 1 defined term implicitly referenced (the Boeing service bulletin)","No cross-references to other legislation beyond a single note about the equivalent FAA directive","Simple conditional structure: inspect repeatedly OR modify permanently by fixed deadline","Single applicability criterion (all Boeing 767 models covered by the referenced document)"],"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 **Boeing 767 aircraft** to inspect and fix a specific problem with the entry and service doors.\n\n**The problem:**\nThe \"mid liner dust covers\" (protective covers inside the door windows) can come loose. If they do, they can jam against the door's inner lining and **stop the door from opening fully** — a serious safety issue in an emergency evacuation.\n\n**What must be done:**\n- **Inspect** the dust covers every **90 days** until the permanent fix is installed\n- **Permanently modify** the doors before **19 June 1989** (following Boeing's official service bulletin SB 767-25A0092)\n\n**Who it affects:**\nAnyone operating Boeing 767 aircraft in Australia — airlines, cargo operators, and private owners.\n\n**Why it matters:**\nDoors that won't open fully could trap passengers and crew during an emergency. This directive prevents that by forcing a fix before a dangerous situation occurs."},"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":false,"description":"The AD’s scope is limited to the Boeing 767 models listed in the Requirement document and to addressing the identified unsafe condition (a loose dust cover interfering with door operation) by requiring inspections and a modification (Applicability, Background, Compliance, Requirement). There is no indication in the text that the scope was expanded beyond that original technical purpose; the instrument confines action to the listed models and to the Boeing SB process."},"complexity_factors":["Clear, narrowly defined technical issue (loose dust cover interfering with liner movement) (Background).","Prescriptive but simple compliance actions: 90-day inspection intervals until modification; one-off modification by a fixed date (Compliance).","Dependency on an external technical document (Boeing SB 767-25A0092) for the method of modification increases procedural dependency and requires access to the SB (Requirement).","Cross-reference to FAA AD adds a secondary source to check for related guidance (Note).","Applicability requires consulting a separate Requirement document to identify which specific 767 models are covered (Applicability)."],"plain_english_summary":"This Airworthiness Directive requires operators of the listed Boeing 767 aircraft to inspect the entry/service door inner window (dust cover) every 90 days or less and to complete Boeing Service Bulletin 767-25A0092’s modification by 19 June 1989. It responds to a loose dust cover that can obstruct the upper liner and prevent full door opening; inspections are interim measures until the mandatory one‑time modification, which eliminates the recurring inspection burden."}},"importantCases":[],"_links":{"self":"/api/acts/ad-b767-17-entry-and-service-door-mid-liner-dust-covers","history":"/api/acts/ad-b767-17-entry-and-service-door-mid-liner-dust-covers/history","analysis":"/api/acts/ad-b767-17-entry-and-service-door-mid-liner-dust-covers/analysis","conflicts":"/api/acts/ad-b767-17-entry-and-service-door-mid-liner-dust-covers/conflicts","importantCases":"/api/acts/ad-b767-17-entry-and-service-door-mid-liner-dust-covers/important-cases","documents":"/api/acts/ad-b767-17-entry-and-service-door-mid-liner-dust-covers/documents"}}