{"id":"F2006B09462","name":"AD/EMB-110/21 - Fuel Filter Drain Hose - Replacement","slug":"ad-emb-110-21-fuel-filter-drain-hose-replacement","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":53925,"registerId":"commonwealth-F2006B09462-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/EMB-110/21 - Fuel Filter Drain Hose - Replacement","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)  Embraer EMB-110 (Bandeirante) Series Aeroplanes\n\n \n\nAD/EMB-110/21 Fuel Filter Drain Hose - Replacement 2/83\n\nApplicability: All models EMB-110. Document: Embraer SB No. 110-28-024.\n\nNote: Brazilian CTA AD 82-10-01 refers.\n\n \n\nCompliance: Within 100 hours time in service after 28 February, 1983.\n\n \n\nBackground: Existing fuel filter drain hoses are to be replaced with rigid tubes in order to minimise the possibility of failure. Such a failure could lead to the draining of the aircraft fuel tanks.\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, one-off airworthiness directive from 1983 addressing a specific safety defect. It has not expanded beyond its original purpose of mandating a fuel hose replacement."},"complexity_factors":["Single, specific technical requirement (hose replacement)","No defined terms section","Single compliance deadline with clear metric (100 hours time in service)","No cross-references to other legislation sections (only references to manufacturer documents)","No conditional logic or exceptions","Extremely short document (approximately 150 words of substantive content)"],"plain_english_summary":"This is an **Airworthiness Directive (AD)** issued by Australia's Civil Aviation Safety Authority (CASR Part 39). It applies to all models of the **Embraer EMB-110 (Bandeirante)** aircraft.\n\n**What it requires:**\n- Owners and operators must replace the flexible fuel filter drain hoses with rigid tubes.\n- This must be done within **100 hours of flight time** after 28 February 1983.\n\n**Why it matters:**\n- The existing flexible hoses could fail, causing fuel to drain from the tanks. This creates a fire risk and could lead to fuel starvation (running out of fuel mid-flight).\n- The directive references an Embraer Service Bulletin (SB 110-28-024) and a Brazilian aviation authority directive (CTA AD 82-10-01), showing this is based on manufacturer and international safety data.\n\n**Who it affects:**\n- Anyone operating an Embraer EMB-110 aircraft in Australia, or any Australian-registered aircraft of this type operating overseas."},"flash_summary":{"complexity_score":2,"scope_assessment":{"changed":false,"description":"The directive’s scope aligns with its stated intent in the text: it targets all EMB-110 aeroplanes and mandates replacing flexible fuel filter drain hoses with rigid tubes within a specified time window to reduce the risk of fuel loss. There is no indication in the supplied text that the scope was broadened or narrowed from that stated purpose."},"complexity_factors":["Narrow technical scope: single modification (fuel filter drain hose → rigid tube).","Clear applicability: applies to all EMB-110 models (no model-by-model differentiation).","Definite compliance timeframe: fixed deadline (100 hours TIS after 28 Feb 1983).","Dependence on a single manufacturer's service bulletin for technical instructions (Embraer SB No. 110-28-024).","Safety-critical context increases operational urgency despite simple technical change.","Reference to a foreign airworthiness directive (Brazilian CTA AD 82-10-01) requiring cross-reference handling."],"plain_english_summary":"This directive requires all Embraer EMB-110 operators to remove flexible fuel filter drain hoses and install rigid tubes per Embraer Service Bulletin No. 110-28-024, to reduce the risk of hose failure and fuel draining from tanks.  \n\nCompliance is mandatory within 100 hours time-in-service after 28 February 1983; owners/operators bear the cost and scheduling burden of the modification."}},"importantCases":[],"_links":{"self":"/api/acts/ad-emb-110-21-fuel-filter-drain-hose-replacement","history":"/api/acts/ad-emb-110-21-fuel-filter-drain-hose-replacement/history","analysis":"/api/acts/ad-emb-110-21-fuel-filter-drain-hose-replacement/analysis","conflicts":"/api/acts/ad-emb-110-21-fuel-filter-drain-hose-replacement/conflicts","importantCases":"/api/acts/ad-emb-110-21-fuel-filter-drain-hose-replacement/important-cases","documents":"/api/acts/ad-emb-110-21-fuel-filter-drain-hose-replacement/documents"}}