{"id":"F2006B06820","name":"AD/SD3-30/19 - Oxygen Bottle Protection","slug":"ad-sd3-30-19-oxygen-bottle-protection","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":114684,"registerId":"commonwealth-F2006B06820-current","compilationNumber":null,"startDate":"2026-04-03","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/SD3-30/19 - Oxygen Bottle Protection","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/SD3-30/19 Oxygen Bottle Protection 6/86\n\nApplicability: All model Serial Nos. SH3100, SH3101, SH3103, SH3104, SH3106, SH3107, SH3109 to SH3113.\n\n \n\nRequirement: Action in accordance with Shorts SB SD 330-25-47. Compliance:  Prior to 31 December 1986.\n\nBackground: To prevent grease from control cables entering the area of the oxygen bottles.\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":{"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a discrete, single-issue safety directive focused specifically on oxygen bottle protection for one aircraft type. It has not expanded beyond its original narrow technical purpose."},"complexity_factors":["Extremely short document (under 150 words)","Only 1 substantive requirement with clear reference to external technical document","Simple applicability clause listing specific serial numbers","Single compliance deadline with no conditional extensions or exceptions","No defined terms section, no cross-references to other legislation, no nested conditions"],"plain_english_summary":"This is an **Airworthiness Directive** (a mandatory safety order) issued by Australia's Civil Aviation Safety Authority for **Short SD3-30 series aeroplanes** — a type of regional aircraft.\n\n**What it does:**\n- Requires aircraft operators to take specific action to **prevent grease from control cables from leaking into the area where oxygen bottles are stored**\n- The required action follows a manufacturer's service bulletin (Shorts SB SD 330-25-47) — essentially instructions from the plane maker on how to fix the problem\n\n**Who it affects:**\n- Owners and operators of specific Short SD3-30 aircraft with serial numbers SH3100, SH3101, SH3103, SH3104, SH3106, SH3107, and SH3109 through SH3113\n\n**Why it matters:**\n- Oxygen bottles and grease don't mix well — grease contamination could potentially affect the oxygen system or create a fire hazard\n- This is a **time-critical safety fix** — operators had to comply before 31 December 1986\n- Non-compliance would mean the aircraft cannot legally fly in Australian airspace"},"flash_summary":{"complexity_score":2,"scope_assessment":{"changed":false,"description":"The directive does not alter the scope stated in its text: it applies only to the listed Short SD3-30 serial numbers and requires the action set out in the manufacturer’s service bulletin to prevent grease entering the oxygen-bottle area. The instrument states that purpose (Background) and prescribes the required action (Requirement) with a compliance deadline (Compliance); it does not expand applicability or introduce new categories of obligation beyond those elements (Applicability)."},"complexity_factors":["Narrow applicability: specific serial numbers (Applicability)","External technical reference: requires consulting Shorts SB SD 330-25-47 for the detailed work (Requirement)","Fixed historical deadline: single hard compliance date (Compliance)","Technical subject matter (aircraft oxygen-bottle protection) requiring qualified maintenance resources (Requirement; Background)","No alternative compliance mechanism or exemptions stated in the AD text (Requirement; Compliance)"],"plain_english_summary":"Owners/operators of the listed Short SD3‑30 aeroplanes must, before 31 December 1986, carry out the work in Shorts Service Bulletin SD 330‑25‑47 to prevent grease from control cables entering the oxygen‑bottle area. The directive places the technical, financial and scheduling burden on those operators and is enforced by the regulator; compliance relies on the manufacturer’s bulletin."}},"importantCases":[],"_links":{"self":"/api/acts/ad-sd3-30-19-oxygen-bottle-protection","history":"/api/acts/ad-sd3-30-19-oxygen-bottle-protection/history","analysis":"/api/acts/ad-sd3-30-19-oxygen-bottle-protection/analysis","conflicts":"/api/acts/ad-sd3-30-19-oxygen-bottle-protection/conflicts","importantCases":"/api/acts/ad-sd3-30-19-oxygen-bottle-protection/important-cases","documents":"/api/acts/ad-sd3-30-19-oxygen-bottle-protection/documents"}}