{"id":"F2006B06818","name":"AD/SD3-30/17 Amdt 1 - Fuel Pipe Fumeproof Shrouds","slug":"ad-sd3-30-17-amdt-1-fuel-pipe-fumeproof-shrouds","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":114682,"registerId":"commonwealth-F2006B06818-current","compilationNumber":null,"startDate":"2026-04-03","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/SD3-30/17 Amdt 1 - Fuel Pipe Fumeproof Shrouds","content":"COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 \\- 105 CIVIL AVIATION SAFETY AUTHORITY\n\nSCHEDULE OF AIRWORTHINESS DIRECTIVES\n\n![](image.001.png)  \nShort SD3-30 Series Aeroplanes\n\nAD/SD3-30/17\n\nAmdt 1\n\n  \n\nFuel Pipe Fumeproof Shrouds 9/86 DM\n\nApplicability: All model SD3-30 with S/Nos SH3002 to SH3099, SH3102 and SH3105. Requirement: Action in accordance with Shorts SB SD330-28-29, Rev. 1.\n\nCompliance: 1. Carry out \"Inspection of the collector tank housings for evidence of fuel leakage\" called for in the Shorts Maintenance Programme (zonal inspection 5-27-01, page 6 item 17) at every second 'A' check (120 hours time in service) after 31 December 1985 until modified.\n\n    2. Modify before 30 September 1986.\n\n    3. On completion of the modification, the inspection intervals referred to in item one\n\n    of the Compliance may return to the normal maintenance programme intervals.\n\nBackground: The manufacturer advises that operational experience has found that certain existing fumeproof shrouds can deteriorate and become porous. New shrouds manufactured to an improved specification have therefore been introduced. This Directive has been amended to include the latest Revision of the Requirement Document.","sortOrder":0}],"analysis":{"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":false,"description":"The instrument was amended only to include the latest revision of the Requirement Document (see Background). The applicability (listed SD3-30 serial numbers), required inspections, modification action, and the compliance deadline remain as set in the Directive, so the practical scope of affected aircraft and obligations has not changed."},"complexity_factors":["Specific applicability by serial number narrows affected fleet but requires record checks.","Cross-reference to the Shorts Maintenance Programme (zonal inspection 5-27-01) and a Service Bulletin (SD330-28-29 Rev.1) creates dependency on external technical documents.","Temporary change to inspection frequency (every second 'A' check / 120 hours) until modification increases short-term maintenance workload.","A clear hard compliance deadline for modification (30 September 1986) imposes scheduling pressure on operators.","Low regulatory discretion: actions and timeline are prescriptive, not discretionary, reducing interpretive complexity.","Amendment limited to updating the Requirement Document revision rather than introducing new substantive obligations."],"plain_english_summary":"This airworthiness directive requires operators of specified Short SD3-30 aeroplanes (listed serial numbers) to inspect collector tank housings every second 'A' check (about 120 flight hours) and to fit improved, fumeproof fuel-pipe shrouds by 30 September 1986, following Shorts Service Bulletin SD330-28-29 Rev.1. Operators pay for and schedule the extra inspections and the mandatory modification; once the modification is done, inspection intervals revert to the normal maintenance programme. The amendment updates the referenced requirement document."},"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a standard, narrow airworthiness directive addressing a specific technical defect in a specific aircraft model. It has not expanded beyond its original safety purpose."},"complexity_factors":["Single, specific aircraft type and limited serial number range","Clear, sequential compliance requirements (3 numbered items)","Only one technical reference (Shorts SB SD330-28-29, Rev. 1)","No defined terms section or interpretation provisions","No cross-references to other legislation or regulations","Straightforward conditional logic (inspection until modified, then return to normal intervals)"],"plain_english_summary":"This CASA Airworthiness Directive targets Short SD3‑30 series turboprops with certain serial numbers, addressing deterioration of fuel pipe fumeproof shrouds that can become porous and allow fuel vapour escape. It requires affected aircraft to be inspected regularly until fitted with improved shrouds by the compliance date, then returns them to normal maintenance intervals. This reduces fire/explosion risk from fuel vapours."}},"importantCases":[],"_links":{"self":"/api/acts/ad-sd3-30-17-amdt-1-fuel-pipe-fumeproof-shrouds","history":"/api/acts/ad-sd3-30-17-amdt-1-fuel-pipe-fumeproof-shrouds/history","analysis":"/api/acts/ad-sd3-30-17-amdt-1-fuel-pipe-fumeproof-shrouds/analysis","conflicts":"/api/acts/ad-sd3-30-17-amdt-1-fuel-pipe-fumeproof-shrouds/conflicts","importantCases":"/api/acts/ad-sd3-30-17-amdt-1-fuel-pipe-fumeproof-shrouds/important-cases","documents":"/api/acts/ad-sd3-30-17-amdt-1-fuel-pipe-fumeproof-shrouds/documents"}}