{"id":"F2006B08793","name":"AD/DC3/16 Reissue - Flexible Hose - Replacement","slug":"ad-dc3-16-reissue-flexible-hose-replacement","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":52142,"registerId":"commonwealth-F2006B08793-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/DC3/16 Reissue - Flexible 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)  Douglas DC3 Series Aeroplanes\n\n \n\n# AD/DC3/16\n\nReissue\n\nApplicability: All models.\n\n# Flexible Hose - Replacement 1/84\n\n \n\nRequirement: Remove propeller feathering hose assembly, P/No ASC-A14F, and replace with hose assembly approved by the Secretary.\n\n \n\nCompliance: Unless already accomplished, within 100 hours time in service after 29 February 1984.\n\n \n\nBackground: This Directive is reissued with no changes made to the requirement.\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":1,"scope_assessment":{"changed":false,"description":"This is a straightforward reissue of a 1984 safety directive. The scope remains exactly as originally intended: a targeted, time-limited replacement order for a specific aircraft part on a specific aircraft type. No expansion of scope has occurred."},"complexity_factors":["Single, unambiguous requirement with no conditional logic","No defined terms section — uses plain language and one explicit part number","No cross-references to other legislation or regulations","Extremely short document (under 150 words of substantive content)","Simple compliance deadline (100 hours time in service from specified date)","No exceptions, exemptions, or nested provisions"],"plain_english_summary":"**What this is:** This is an Airworthiness Directive (AD) — essentially a mandatory safety order issued by Australia's Civil Aviation Safety Authority (CASA) for a specific aircraft type.\n\n**What it does:** It orders owners and operators of **Douglas DC-3 aircraft** (all models) to replace a specific propeller feathering hose assembly. The old hose (part number ASC-A14F) must be removed and replaced with a hose approved by the Secretary (the government official responsible for aviation safety at the time).\n\n**Who it affects:** Anyone who owns, operates, or maintains a Douglas DC-3 aeroplane in Australia.\n\n**Why it matters:** Propeller feathering systems are critical safety equipment — they allow pilots to stop a propeller from spinning if an engine fails, reducing drag and helping control the aircraft. A faulty hose in this system could lead to loss of control or worse. This directive ensures a potentially dangerous component is replaced with an approved, safe alternative.\n\n**When it had to be done:** By 100 hours of flight time after 29 February 1984 (unless already completed). This is a **reissue** of the original 1984 directive, meaning CASA republished it without changing the actual safety requirement."},"flash_summary":{"complexity_score":2,"scope_assessment":{"changed":false,"description":"The reissue explicitly states that no changes have been made to the requirement. The instrument continues to require removal of propeller feathering hose assembly P/No ASC‑A14F and replacement with a hose assembly approved by the Secretary, to be completed within 100 hours time in service after 29 February 1984 unless already done. (Background; Requirement; Compliance)"},"complexity_factors":["Single, narrowly defined technical action (remove P/No ASC‑A14F and replace) reduces procedural complexity (Requirement).","Applies to all DC‑3 models, so applicability is broad though the task is specific (Applicability).","Approval of replacement assemblies rests with the Secretary, introducing an administrative discretion point (Requirement).","Short, specific compliance timeframe (100 hours time in service after 29 February 1984) creates a clear deadline (Compliance).","Directive text does not identify approved replacement part numbers or technical acceptance criteria within the document, requiring operators to obtain Secretary approval separately (Requirement).","Reissued with no changes, so current text is a restatement rather than an amendment (Background)."],"plain_english_summary":"This airworthiness directive requires all Douglas DC‑3 series aeroplanes to have propeller feathering flexible hose assembly P/No ASC‑A14F removed and replaced with a hose assembly approved by the Secretary, within 100 hours time‑in‑service after 29 February 1984 if not already done. \n\nIt affects DC‑3 owners/operators who must source and install an approved part (incurring parts and labour); the reissue makes no change to the original requirement."}},"importantCases":[],"_links":{"self":"/api/acts/ad-dc3-16-reissue-flexible-hose-replacement","history":"/api/acts/ad-dc3-16-reissue-flexible-hose-replacement/history","analysis":"/api/acts/ad-dc3-16-reissue-flexible-hose-replacement/analysis","conflicts":"/api/acts/ad-dc3-16-reissue-flexible-hose-replacement/conflicts","importantCases":"/api/acts/ad-dc3-16-reissue-flexible-hose-replacement/important-cases","documents":"/api/acts/ad-dc3-16-reissue-flexible-hose-replacement/documents"}}