{"id":"F2006B06871","name":"AD/SD3-60/27 - Fuel Low Pressure Booster Pump","slug":"ad-sd3-60-27-fuel-low-pressure-booster-pump","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":114751,"registerId":"commonwealth-F2006B06871-current","compilationNumber":null,"startDate":"2026-04-03","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/SD3-60/27 - Fuel Low Pressure Booster Pump","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)  Short SD3-60 Series Aeroplanes\n\n \n\nAD/SD3-60/27 Fuel Low Pressure Booster Pump 4/88\n\nApplicability: All model SD3-60 aircraft.\n\n \n\nRequirement: Action in accordance with Parts B and C of Shorts Service Bulletin No SD360-28-17.\n\n \n\nNote: FAA AD 84-24-52 R1 Amdt 39-5802 refers.\n\n \n\nCompliance: Before issue of a Certificate of Airworthiness.\n\n \n\nBackground: A modification to invert the LP pump configuration in the forward and aft collector tanks, has been developed by the manufacturer which will improve the system's ability to continuously purge water from the collector tanks without degradation of engine performance.\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, targeted safety directive for a specific aircraft type. It has not expanded beyond its original purpose of addressing a specific fuel system modification."},"complexity_factors":["Very short document (approximately 150 words of substantive content)","Only one defined term implied ('Certificate of Airworthiness')","No cross-references to other legislation or complex conditional logic","Single, straightforward compliance requirement (follow the manufacturer's service bulletin)","No exceptions, exemptions, or nested conditions","Simple structure: applicability, requirement, note, compliance, background"],"plain_english_summary":"This is an **Airworthiness Directive (AD)** — essentially a mandatory safety order — issued by Australia's Civil Aviation Safety Authority (CASA) for a specific type of aircraft: the **Short SD3-60 Series** (a small regional turboprop plane, also known as the Short 360).\n\n**What it does:**\nThe directive requires aircraft owners/operators to modify the **low-pressure fuel booster pumps** in the forward and aft fuel tanks. Specifically, the pumps must be reconfigured (inverted) so they can better remove water from the fuel system without hurting engine performance.\n\n**Who must comply:**\nAnyone who owns or operates any model of the SD3-60 aircraft.\n\n**When:**\nBefore the aircraft can be issued a **Certificate of Airworthiness** (the official document saying the plane is safe to fly).\n\n**Why it matters:**\nWater in aircraft fuel is dangerous — it can cause engine failure. This modification improves the system's ability to continuously purge (remove) water from the fuel collector tanks, making the aircraft safer.\n\n**Key reference:**\nThe directive points to **Shorts Service Bulletin No SD360-28-17** (the manufacturer's official instructions for making this fix) and notes a related US Federal Aviation Administration directive (FAA AD 84-24-52)."},"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":false,"description":"The AD imposes a mandatory modification for all SD3-60 aircraft to be completed before issue of a Certificate of Airworthiness, consistent with the manufacturer's developed modification and the referenced FAA AD (Requirement; Compliance; Background). The text does not indicate an expansion or narrowing of scope beyond that stated purpose."},"complexity_factors":["Narrow technical scope: single modification (invert LP pump configuration) described at high level (Background).","Normative requirement depends on an external technical document: Parts B and C of Shorts Service Bulletin No SD360-28-17 (Requirement).","Timing linkage: compliance required before issue of a Certificate of Airworthiness, creating a procedural constraint tied to certification processes (Compliance).","Universal applicability across one aircraft model (all SD3-60) concentrates implementation demand (Applicability).","Cross-reference to an FAA AD introduces an external regulatory touchpoint but no additional procedural detail in the text (Note)."],"plain_english_summary":"This AD mandates a modification to the LP booster pump configuration on all Short SD3-60 aeroplanes per Shorts Service Bulletin SD360-28-17, making the change compulsory for airworthiness certification. \n\nIt affects SD3-60 owners/operators, maintenance organisations and parts suppliers, and is enforced by CASA; operators bear the costs. The manufacturer’s aim is improved continuous water purging from collector tanks without reducing engine performance."}},"importantCases":[],"_links":{"self":"/api/acts/ad-sd3-60-27-fuel-low-pressure-booster-pump","history":"/api/acts/ad-sd3-60-27-fuel-low-pressure-booster-pump/history","analysis":"/api/acts/ad-sd3-60-27-fuel-low-pressure-booster-pump/analysis","conflicts":"/api/acts/ad-sd3-60-27-fuel-low-pressure-booster-pump/conflicts","importantCases":"/api/acts/ad-sd3-60-27-fuel-low-pressure-booster-pump/important-cases","documents":"/api/acts/ad-sd3-60-27-fuel-low-pressure-booster-pump/documents"}}