{"id":"F2006B06824","name":"AD/SD3-30/22 - Elevator and Rudder Control Guards","slug":"ad-sd3-30-22-elevator-and-rudder-control-guards","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":114688,"registerId":"commonwealth-F2006B06824-current","compilationNumber":null,"startDate":"2026-04-03","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/SD3-30/22 - Elevator and Rudder Control Guards","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 SD3-30 Series Aeroplanes\n\n \n\nAD/SD3-30/22 Elevator and Rudder Control Guards 5/87\n\nApplicability: All model SD3-30 with S/Nos SH3002 to SH3099, SH3102 and SH3105. Requirement:              Action in accordance with Shorts SB SD330-27-31.\n\nCompliance: Prior to 31 August 1987.\n\n \n\nBackground:  Flight control interference occurred as a result of an excessive load being applied to the back panel of a baggage locker.\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\n \n\n \n","sortOrder":0}],"analysis":{"flash_summary":{"complexity_score":2,"scope_assessment":{"changed":false,"description":"The AD’s scope is narrowly defined and aligned with the stated problem in the Background (preventing flight control interference caused by excessive load on a baggage locker panel). It applies only to enumerated SD3-30 serial numbers and mandates the manufacturer’s Service Bulletin; there is no indication in the AD text that the scope was broadened or narrowed from the stated safety purpose."},"complexity_factors":["Narrow applicability: only specific SD3-30 serial numbers (SH3002–SH3099, SH3102, SH3105) are affected.","Single mandatory action: compliance requires following one Manufacturer Service Bulletin (Shorts SB SD330-27-31).","Fixed compliance deadline: a single, explicit date (31 August 1987) limits scheduling ambiguity.","Technical details outsourced: the AD does not contain the modification steps; implementers must obtain and interpret the Service Bulletin, which adds operational complexity.","Low regulatory discretion: the AD is prescriptive (must comply), reducing interpretive complexity for regulators but concentrating implementation tasks on operators and maintenance providers."],"plain_english_summary":"This AD mandates fitting elevator and rudder control guards on specified Shorts SD3-30 aeroplanes (S/Ns SH3002–SH3099, SH3102, SH3105) by 31 August 1987, making compliance with Shorts SB SD330-27-31 compulsory. It targets owners/operators and maintenance organisations, who bear cost, scheduling and downtime. The measure responds to an incident where excessive loading of a baggage locker back panel caused flight‑control interference."},"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a discrete, time-bound safety directive addressing a specific mechanical issue on a specific aircraft type. It has not expanded beyond its original purpose of mandating elevator and rudder control guards."},"complexity_factors":["Extremely short document (approximately 150 words)","Only 4 defined elements: applicability (specific serial numbers), requirement (reference to external service bulletin), compliance date, and brief background","No nested conditional logic or exceptions","Single cross-reference to external technical document (Shorts SB SD330-27-31)","No interpretation section or defined terms","Straightforward command structure: identify aircraft → do this → by this date"],"plain_english_summary":"**What this is:** This is an Airworthiness Directive (AD) — essentially a mandatory safety notice issued by Australia's Civil Aviation Safety Authority (CASA) for a specific type of aircraft.\n\n**What it does:** It requires owners and operators of certain Short SD3-30 series aeroplanes (small regional turboprop aircraft) to install guards on the elevator and rudder controls. These guards prevent the flight controls from being jammed or interfered with by baggage in the rear cargo compartment.\n\n**Who it affects:** Anyone who owns or operates Short SD3-30 aircraft with serial numbers SH3002 to SH3099, SH3102, and SH3105.\n\n**Why it matters:** The directive was issued because a real incident occurred where heavy baggage pushed against the back panel of a baggage locker and interfered with the flight controls — a serious safety risk that could cause loss of control of the aircraft. The fix had to be completed before 31 August 1987.\n\n**What must be done:** Operators must follow the manufacturer's Service Bulletin (Shorts SB SD330-27-31) to install the required guards."}},"importantCases":[],"_links":{"self":"/api/acts/ad-sd3-30-22-elevator-and-rudder-control-guards","history":"/api/acts/ad-sd3-30-22-elevator-and-rudder-control-guards/history","analysis":"/api/acts/ad-sd3-30-22-elevator-and-rudder-control-guards/analysis","conflicts":"/api/acts/ad-sd3-30-22-elevator-and-rudder-control-guards/conflicts","importantCases":"/api/acts/ad-sd3-30-22-elevator-and-rudder-control-guards/important-cases","documents":"/api/acts/ad-sd3-30-22-elevator-and-rudder-control-guards/documents"}}