{"id":"F2006B06876","name":"AD/SD3-60/31 - Air-Conditioning System","slug":"ad-sd3-60-31-air-conditioning-system","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":114756,"registerId":"commonwealth-F2006B06876-current","compilationNumber":null,"startDate":"2026-04-03","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"Short SD3-60 Series Aeroplanes","sectionType":"part","heading":"Short SD3-60 Series Aeroplanes","content":"# ![](image.001.png)  \nShort SD3-60 Series Aeroplanes\n\nAD/SD3-60/31 Air-Conditioning System 12/90 DM","sortOrder":0},{"sectionNumber":"Applicability: All model SD3-60 series a","sectionType":"part","heading":"Applicability: All model SD3-60 series aeroplanes equipped with AAR Oklahoma, Inc. freon air conditioning systems, installed in accordance with STC SA3749SW.","content":"# Applicability: All model SD3-60 series aeroplanes equipped with AAR Oklahoma, Inc. freon air conditioning systems, installed in accordance with STC SA3749SW.\n\nRequirement: Action in accordance with FAA AD 90-15-07 Paragraphs A and B.\n\nNote 1: Operators of affected aircraft who elect to comply with Paragraph B. 1. of the FAA AD are required to have an Australian Flight Manual amendment specifying the required action. In lieu of inserting a copy of the AD in the flight manual, operators intending to take this course of action must prepare and submit a suitable flight manual to their local CAA Field Office for Approval.\n\nNote 2: Copies of FAA AD 90-15-07 may be obtained by contacting Mr Sam Lovell, Airplane Certification Office, FAA, South-west Region, Fort Worth, Texas, 76193- 0150. Telephone (817) 624-5159; Copies of the AAR Oklahoma Inc. Service Information Letter 5-90-1 dated June 7 1990 referred to in the FAA AD may be obtained from AAR Oklahoma Inc., 6611 S. Meridian Avenue, PO Box 59100, Oklahoma City, Oklahoma 73159. Copies of both these Documents may also be viewed at local Civil Aviation Authority (CAA) Field Offices or the CAA Head Office, Continuing Airworthiness Documentation Section, Alan Woods Building, 25 Constitution Avenue, Canberra City ACT.","sortOrder":1},{"sectionNumber":"Compliance: As specified in the Requirem","sectionType":"part","heading":"Compliance: As specified in the Requirement Documents, however the effective date referred to in the Requirement document is to be 6 October 1990.","content":"# Compliance: As specified in the Requirement Documents, however the effective date referred to in the Requirement document is to be 6 October 1990.\n\nBackground: This AD has resulted from reports of arcing, burnt wires, and smoke in the cockpit due to wiring terminals which are too large for the studs to which they are connected. This condition, if not corrected, could result in an electrical fire and subsequent loss of essential equipment or flight instruments.","sortOrder":2}],"analysis":{"flash_summary_failed":{"failed":true,"reason":"Unauthenticated. Configure AI_GATEWAY_API_KEY or use a provider module. Learn more: https://ai-sdk.dev/unauthenticated-ai-gateway","source":"analysis-cron"},"kimi_summary":{"content_quality":"ok","complexity_score":3,"scope_assessment":{"changed":false,"description":"This AD maintains its original narrow scope — addressing a specific wiring defect in a specific air-conditioning system on a specific aircraft type. It does not expand beyond the original safety issue of electrical fire risk in the AAR Oklahoma air-conditioning installation."},"complexity_factors":["Short, single-issue directive focused on one specific aircraft system","Only 2 defined applicability criteria (aircraft model + specific STC)","Relies on external document (FAA AD 90-15-07) for substantive requirements rather than spelling them out","Contains one conditional compliance path (Paragraph B.1) requiring additional Australian-specific documentation","Minimal cross-referencing — only references one external FAA directive and one service bulletin","Clear, single effective date with straightforward compliance timeline"],"plain_english_summary":"This AD requires owners/operators of Short SD3-60 aeroplanes fitted with the AAR Oklahoma freon air‑conditioning system (STC SA3749SW) to address oversized wiring terminals that have caused arcing, burnt wiring and cockpit smoke. Compliance with FAA AD 90‑15‑07 is mandated by 6 October 1990, via either the wiring modification or operating under restrictions with an approved Australian Flight Manual amendment. The action prevents potential electrical fires and loss of essential flight instruments."},"flash_summary":{"complexity_score":4,"scope_assessment":{"changed":false,"description":"The AD's scope is confined to Short SD3-60 series aeroplanes equipped with the AAR Oklahoma freon air‑conditioning system installed per STC SA3749SW and addresses a wiring terminal hazard. It does not expand applicability beyond that installation or introduce new categories of aircraft."},"complexity_factors":["Cross-reference to an external instrument: Requirement mandates compliance with FAA AD 90-15-07 (Paragraphs A & B), creating reliance on a non‑Australian document.","Multiple compliance paths: FAA AD offers Paragraph A and B options; choosing Paragraph B.1 imposes administrative obligations (flight manual amendment and CAA approval).","Applicability limited by installation method: applies only to SD3-60 aircraft with AAR Oklahoma freon AC installed under STC SA3749SW, requiring operators to determine STC status.","Administrative burden: must obtain FAA AD and AAR Service Information Letter; CAA Field Offices hold approval and may review submitted flight manuals.","Effective date modification: compliance documents must be followed but with an Australian effective date (6 October 1990), adding an implementation timing detail."],"plain_english_summary":"This airworthiness directive requires operators of Short SD3-60 aeroplanes fitted with AAR Oklahoma freon air‑conditioning under STC SA3749SW to carry out the corrective actions set out in FAA AD 90‑15‑07 (Paragraphs A & B) to fix oversized wiring terminals that can arc, burn and produce smoke, effective 6 October 1990. Operators pay for inspections and repairs; if complying via FAA AD Paragraph B.1 they must prepare and submit an Australian Flight Manual amendment to their local CAA Field Office for approval."}},"importantCases":[],"_links":{"self":"/api/acts/ad-sd3-60-31-air-conditioning-system","history":"/api/acts/ad-sd3-60-31-air-conditioning-system/history","analysis":"/api/acts/ad-sd3-60-31-air-conditioning-system/analysis","conflicts":"/api/acts/ad-sd3-60-31-air-conditioning-system/conflicts","importantCases":"/api/acts/ad-sd3-60-31-air-conditioning-system/important-cases","documents":"/api/acts/ad-sd3-60-31-air-conditioning-system/documents"}}