{"id":"F2006B03026","name":"AD/B747/125 - Evacuation Slide/Raft Regulator","slug":"ad-b747-125-evacuation-slide-raft-regulator","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":42385,"registerId":"commonwealth-F2006B03026-current","compilationNumber":null,"startDate":"2026-04-01","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/B747/125 - Evacuation Slide/Raft Regulator","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 747 Series Aeroplanes\n\n \n\nAD/B747/125 Evacuation Slide/Raft Regulator 7/94\n\nApplicability: Model 747-100, -200, -300 series aircraft, equipped with BFGoodrich evacuation slides/rafts as listed in BFGoodrich Service Bulletin 4A3221-25-250, and have regulator part number 4A3194-1, -2, or -3 installed.\n\n \n\nRequirement: Modify affected BFGoodrich evacuation slide/raft regulators in accordance with BFGoodrich Service Bulletin 4A3221-25-250.\n\n \n\nNote: FAA AD 93-20-04 Amdt 39-8712 refers.\n\n \n\nCompliance: Prior to 26 November 1996.\n\n \n\nBackground: The FAA received reports that regulators installed on the affected aircraft, are similar in design to those on other transport category aircraft that had caused certain evacuation slide/rafts to fail to inflate immediately upon deployment.\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 addressing a specific mechanical defect in specific aircraft. It has not expanded beyond its original purpose of mandating a single safety modification."},"complexity_factors":["Very short document (under 200 words)","Only 3 defined applicability criteria (aircraft model, service bulletin reference, part numbers)","Single, unambiguous compliance action (modify per specified service bulletin)","No nested conditions, exceptions, or cross-references to other legislation","One external reference only (FAA AD 93-20-04) provided for background context, not as a conditional trigger","Fixed, absolute deadline with no alternative compliance methods or phased implementation"],"plain_english_summary":"This CASA Airworthiness Directive orders operators of certain Boeing 747-100/200/300 aircraft with BFGoodrich evacuation slide/raft regulators (P/N 4A3194‑1/‑2/‑3) to modify or replace the regulators per BFGoodrich Service Bulletin 4A3221‑25‑250. The mandatory fix—required before 26 November 1996—addresses a design flaw that could delay slide inflation during an emergency, posing a serious evacuation and life‑safety risk."},"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":false,"description":"No change of scope is apparent in the text. The directive targets a defined subset of 747 series aeroplanes fitted with specific BFGoodrich regulators and mandates modification per a named service bulletin, consistent with the stated safety rationale and the referenced FAA AD."},"complexity_factors":["Narrow applicability tied to specific aircraft models and regulator part numbers (Applicability: Model 747-100, -200, -300; regulator part number 4A3194-1, -2, or -3).","Single technical action required: modify regulators per a manufacturer service bulletin (Requirement: modify in accordance with BFGoodrich Service Bulletin 4A3221-25-250).","Safety-critical equipment (evacuation slides/rafts) raising higher implementation scrutiny and possible operational downtime.","Fixed compliance deadline creating scheduling and logistical pressures (Compliance: Prior to 26 November 1996).","Cross-reference to foreign authority increases interpretive context (Note: FAA AD 93-20-04 Amdt 39-8712 refers)."],"plain_english_summary":"This Airworthiness Directive orders operators of Boeing 747-100/200/300 aircraft fitted with BFGoodrich evacuation slide/raft regulators (parts 4A3194-1, -2, -3) to modify those regulators in accordance with BFGoodrich Service Bulletin 4A3221-25-250. The modification must be done before 26 November 1996.\n\nThe AD was issued because regulators of a similar design had been associated with slides failing to inflate on deployment; it requires a technical retrofit that imposes cost, maintenance time and planning obligations on affected operators."}},"importantCases":[],"_links":{"self":"/api/acts/ad-b747-125-evacuation-slide-raft-regulator","history":"/api/acts/ad-b747-125-evacuation-slide-raft-regulator/history","analysis":"/api/acts/ad-b747-125-evacuation-slide-raft-regulator/analysis","conflicts":"/api/acts/ad-b747-125-evacuation-slide-raft-regulator/conflicts","importantCases":"/api/acts/ad-b747-125-evacuation-slide-raft-regulator/important-cases","documents":"/api/acts/ad-b747-125-evacuation-slide-raft-regulator/documents"}}