{"id":"F2006B10925","name":"AD/JETSTREAM/55 - Engine Fire Protection System Hose Assemblies","slug":"ad-jetstream-55-engine-fire-protection-system-hose-assemblies","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":56468,"registerId":"commonwealth-F2006B10925-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/JETSTREAM/55 - Engine Fire Protection System Hose Assemblies","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)  British Aerospace BAe 3100 (Jetstream) Series Aeroplanes\n\n \n\nAD/JETSTREAM/55  Engine Fire Protection System Hose Assemblies\n\n\n13/92 DM\n\n \n\nApplicability: British Aerospace Jetstream Series 3100 and Series 3200 aircraft constructor’s numbers 601 to 964 inclusive with the exception of numbers 703, 705 and 707.\n\n \n\nRequirement: Action in accordance with the technical requirements of the CAA (UK) Airworthiness Directive 006-10-92.\n\n \n\nNote: British Aerospace Alert Services Bulletin26-A-JA920401 refers.\n\n \n\nCompliance: As detailed in the Requirement Document with a compliance date of 8 December 1992.\n\n \n\nBackground:  All hoses identified in the Directive must be replaced because the manufacturer has determined that the hose material may be subject to premature ageing.\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":"The directive adopts the CAA (UK) AD technical requirements for replacing specified hose assemblies and limits application to particular constructor numbers (Applicability; Requirement). The instrument does not indicate any expansion or narrowing of scope beyond those stated requirements and exclusions."},"complexity_factors":["Narrow technical action — mandatory replacement of specific hose assemblies (Requirement; Background)","Precise applicability tied to constructor numbers with three exceptions (Applicability)","Reliance on an external technical document (CAA (UK) AD) for detailed instructions (Requirement)","Fixed compliance deadline creates scheduling and logistics pressure for operators (Compliance)","Cross‑reference to a manufacturer Alert Service Bulletin for additional procedural detail (Note)","Safety‑critical parts replacement increases traceability and record‑keeping obligations (Background)","Limited administrative discretion in CASA — action is prescriptive rather than discretionary (Requirement/Compliance)"],"plain_english_summary":"This airworthiness directive requires replacement of certain engine fire‑protection system hose assemblies on British Aerospace Jetstream Series 3100 and 3200 aeroplanes (constructor numbers 601–964, except 703, 705 and 707). It implements the technical requirements of the referenced CAA (UK) Airworthiness Directive (Requirement; Applicability).\n\nOwners/operators must perform the replacements by 8 December 1992 and therefore bear the cost and scheduling burden; the manufacturer determined the hose material may be subject to premature ageing (Compliance; Background; Note)."},"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a discrete, time-bound safety directive addressing a specific manufacturing defect in a specific aircraft type. It has not expanded beyond its original purpose of mandating hose replacement for fire safety."},"complexity_factors":["Single, specific technical requirement (hose replacement)","Limited applicability (specific aircraft models and serial numbers)","No defined terms section","No nested conditional logic or exceptions beyond the three excluded serial numbers","Short document (approximately 150 words of substantive content)","Single cross-reference to UK CAA Directive and one manufacturer service bulletin"],"plain_english_summary":"This CASA Airworthiness Directive mandates replacement of specific engine fire‑extinguishing hose assemblies on certain British Aerospace Jetstream 3100/3200 aircraft because the hose material may age prematurely and fail, risking loss of engine fire suppression.  \n\nIt affects owners/operators of the listed serials in Australia, requires compliance with the UK Directive 006‑10‑92 and related BA service bulletin, and had a compliance date of 8 December 1992."}},"importantCases":[],"_links":{"self":"/api/acts/ad-jetstream-55-engine-fire-protection-system-hose-assemblies","history":"/api/acts/ad-jetstream-55-engine-fire-protection-system-hose-assemblies/history","analysis":"/api/acts/ad-jetstream-55-engine-fire-protection-system-hose-assemblies/analysis","conflicts":"/api/acts/ad-jetstream-55-engine-fire-protection-system-hose-assemblies/conflicts","importantCases":"/api/acts/ad-jetstream-55-engine-fire-protection-system-hose-assemblies/important-cases","documents":"/api/acts/ad-jetstream-55-engine-fire-protection-system-hose-assemblies/documents"}}