{"id":"F2006B06901","name":"AD/SD3-60/55 - Revised Engine Limitations Label","slug":"ad-sd3-60-55-revised-engine-limitations-label","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":114781,"registerId":"commonwealth-F2006B06901-current","compilationNumber":null,"startDate":"2026-04-03","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/SD3-60/55 - Revised Engine Limitations Label","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/SD3-60/55 Revised Engine Limitations Label 6/99\n\nApplicability: SD3-60 aircraft serial number SH3716 through SH3763.\n\n \n\nRequirement: Affix a revised engine limitations label to the ditching hatch in accordance with the requirements of Short Brothers Service bulletin SD360-11-23.\n\n \n\nNote: CAA (UK) Airworthiness Directive 015-11-98 refers.\n\n \n\nCompliance: Prior to 31 July 1999.\n\n \n\nThis Airworthiness Directive becomes effective on 17 June 1999.\n\n \n\nBackground:  This directive has been issued to require a revised engine limitations label which reflects the aircraft manufacturer’s amendment of the propeller speed tolerance.\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, single-issue airworthiness directive with narrow applicability. It has not expanded beyond its original purpose of correcting an engine limitations label for specific aircraft."},"complexity_factors":["Single, specific applicability criterion (serial number range SH3716-SH3763)","One straightforward requirement (affix label per manufacturer bulletin)","No defined terms section","No cross-references to other legislation (only references a UK CAA directive and manufacturer service bulletin for context)","No conditional logic, exceptions, or nested provisions","Extremely short document (approximately 150 words of substantive content)"],"plain_english_summary":"This is an **Airworthiness Directive** (a mandatory safety order) issued by Australia's Civil Aviation Safety Authority 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:**\n- Requires owners/operators of specific SD3-60 aircraft (serial numbers SH3716 through SH3763) to **replace or add a new engine limitations label** on the ditching hatch (an emergency exit panel).\n- The new label must match the specifications in **Short Brothers Service Bulletin SD360-11-23** (technical instructions from the manufacturer).\n\n**Why it matters:**\n- The manufacturer updated the acceptable tolerance range for propeller speed. The old label showed outdated information that could lead to pilots operating the engine outside safe parameters.\n- This ensures pilots have accurate, visible information about engine operating limits during flight.\n\n**Who must comply:**\n- Operators of the 48 specific aircraft in the serial number range listed.\n\n**Deadline:**\n- The work had to be completed before **31 July 1999**, and the directive took effect on **17 June 1999**."},"flash_summary":{"complexity_score":2,"scope_assessment":{"changed":true,"description":"The directive updates the content presented on the aircraft (the engine limitations label) to reflect a manufacturer amendment of the propeller speed tolerance. The action is limited in scope to affixing the revised label on specified serial-numbered aircraft and does not introduce additional inspection or modification requirements beyond that labelling change. (Background; Requirement; Applicability)"},"complexity_factors":["Very narrow applicability limited to SD3-60 serial numbers SH3716–SH3763 (Applicability)","Single, discrete required action (affix a revised label) rather than a program of inspections or modifications (Requirement)","Prescriptive reliance on a manufacturer service bulletin for the procedure (Requirement)","Fixed, short compliance window between effective date and deadline (This AD becomes effective on 17 June 1999; Compliance)","Cross-reference to an external regulator's AD (CAA (UK) Airworthiness Directive 015-11-98) increases traceability requirements but not substantive complexity (Note)"],"plain_english_summary":"This AD requires operators of Short SD3-60 aircraft serial numbers SH3716–SH3763 to affix a revised engine limitations label to the ditching hatch, using Short Brothers Service Bulletin SD360-11-23. Effective 17 June 1999 with compliance prior to 31 July 1999, it implements the manufacturer’s amended propeller speed tolerance. The rule binds owners/operators to carry out the label change; the directive does not state costs or alternative compliance routes."}},"importantCases":[],"_links":{"self":"/api/acts/ad-sd3-60-55-revised-engine-limitations-label","history":"/api/acts/ad-sd3-60-55-revised-engine-limitations-label/history","analysis":"/api/acts/ad-sd3-60-55-revised-engine-limitations-label/analysis","conflicts":"/api/acts/ad-sd3-60-55-revised-engine-limitations-label/conflicts","importantCases":"/api/acts/ad-sd3-60-55-revised-engine-limitations-label/important-cases","documents":"/api/acts/ad-sd3-60-55-revised-engine-limitations-label/documents"}}