{"id":"F2006B04427","name":"AD/BELL 206/113 - Wedge (Bulged) Windows in Single Latch Doors","slug":"ad-bell-206-113-wedge-bulged-windows-in-single-latch-doors","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":44252,"registerId":"commonwealth-F2006B04427-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/BELL 206/113 - Wedge (Bulged) Windows in Single Latch Doors","content":"COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 \\- 105 CIVIL AVIATION SAFETY AUTHORITY\n\nSCHEDULE OF AIRWORTHINESS DIRECTIVES\n\nBell Helicopter Textron Canada (BHTC) 206 and Agusta Bell 206 Series Helicopters\n\nAD/BELL 206/113 Wedge (Bulged) Windows in Single Latch Doors\n\n  \n6/88\n\nApplicability: All models 206A and 206B prior to S/No.1751 that have \\`wedge’ windows fitted to single latch doors.\n\nRequirement: Install the following placard on each door fitted with a \\`wedge’ window above the operating handle at nominal eye level:\n\n“WARNING”\n\nDOOR MAY OPEN WITHOUT WARNING.\n\nSEAT BELT OR HARNESS TO BE WORN AT ALL TIMES.\n\nThe placard lettering is to be no less than 3.5 mm high and is to be white on a red background. The word ‘WARNING’ is to be at least 40% higher than the other lettering.\n\nCompliance: Prior to the issue of the next Maintenance Release after 16 June 1988.\n\nBackground: The manufacturer has reported cases of single latch doors fitted with wedge windows opening in flight without any warning.","sortOrder":0}],"analysis":{"flash_summary":{"complexity_score":2,"scope_assessment":{"changed":false,"description":"The instrument, as provided, applies only to the specific models and serial-number range described and mandates installation of a prescribed placard. There is no text in the provided instrument that expands or narrows that applicability beyond the stated Applicability and Requirement, so the scope in this document remains as originally set out."},"complexity_factors":["Narrow and specific applicability (models 206A/206B prior to S/No.1751 with wedge windows; Applicability).","Prescriptive placard specifications (exact wording, colour, minimum letter height, and relative size of the word 'WARNING'; Requirement).","Fixed compliance timing linked to the next Maintenance Release after a specified date (Compliance).","Some implementation ambiguity in terms such as \"nominal eye level\" and identifying \"single latch\" doors with \"wedge\" windows, which may require technical judgment during inspection (Applicability, Requirement)."],"plain_english_summary":"This directive requires owners/operators of Bell 206A/B helicopters (built before S/N 1751) with single‑latch doors fitted with bulged “wedge” windows to have a specific warning placard installed above the door handle. The red‑and‑white placard warns the door may open without warning and directs occupants to keep seat belts or harnesses fastened; it must be fitted before the next Maintenance Release, at the operator’s cost."},"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a discrete, targeted airworthiness directive addressing a specific known safety defect in specific aircraft. It has not expanded beyond its original purpose of mandating warning placards for identified door/window combinations."},"complexity_factors":["Very short document (approximately 150 words)","Only 4 defined elements: specific helicopter models (206A, 206B), serial number cutoff (1751), window type ('wedge'), and door type ('single latch')","Single, unambiguous requirement with clear physical specifications (colour, size, placement)","No cross-references to other legislation or regulations beyond the parent Civil Aviation Regulations 1998","Simple compliance deadline tied to a specific date and routine maintenance event","No conditional logic, exceptions, or nested provisions"],"plain_english_summary":"This is a **safety directive for specific Bell helicopters** that requires a warning label to be installed on certain doors.\n\n**What it does:**\n- Requires helicopter operators to stick a **warning placard (sign)** on specific doors that have a particular type of window called a \"wedge\" or \"bulged\" window\n- The warning must tell passengers and crew that **the door might open unexpectedly during flight** and that seat belts must always be worn\n\n**Who it affects:**\n- Owners and operators of **Bell 206A and 206B helicopters** with serial numbers **before 1751**\n- Only applies if the helicopter has **single-latch doors with wedge windows** (a curved, protruding window design)\n\n**Why it matters:**\n- The manufacturer discovered these doors could **open in flight without warning** — a serious safety risk\n- The placard warns occupants to **always wear seat belts** in case the door opens unexpectedly\n- The sign must be **white text on red background**, with specific size requirements (lettering at least 3.5mm high, \"WARNING\" 40% bigger)\n\n**Deadline:**\n- Must be done **before the next Maintenance Release is issued after 16 June 1988** (a Maintenance Release is official documentation that an aircraft is safe to fly)"}},"importantCases":[],"_links":{"self":"/api/acts/ad-bell-206-113-wedge-bulged-windows-in-single-latch-doors","history":"/api/acts/ad-bell-206-113-wedge-bulged-windows-in-single-latch-doors/history","analysis":"/api/acts/ad-bell-206-113-wedge-bulged-windows-in-single-latch-doors/analysis","conflicts":"/api/acts/ad-bell-206-113-wedge-bulged-windows-in-single-latch-doors/conflicts","importantCases":"/api/acts/ad-bell-206-113-wedge-bulged-windows-in-single-latch-doors/important-cases","documents":"/api/acts/ad-bell-206-113-wedge-bulged-windows-in-single-latch-doors/documents"}}