{"id":"F2006B06492","name":"AD/RAD/31 - Sunair HF Transceiver - Modification","slug":"ad-rad-31-sunair-hf-transceiver-modification","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":48035,"registerId":"commonwealth-F2006B06492-current","compilationNumber":null,"startDate":"2026-04-02","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/RAD/31 - Sunair HF Transceiver - Modification","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 - 107 CIVIL AVIATION SAFETY AUTHORITY\n\nSCHEDULE OF AIRWORTHINESS DIRECTIVES\n\n \n\n![](image.001.png)  Radio Communication and Navigation Equipment\n\n \n\nAD/RAD/31 Sunair HF Transceiver - Modification 3/76\n\nApplicability: Sunair HF Transceiver ASB-130() power amp/power supply P/No. PA-1010B with S/No. 8366 (28 volt) and below, and S/N 5383 (14 volt) and below.\n\n \n\nRequirement: 1. Modify affected equipment in accordance with Sunair SB No. 130-001 dated 4.15.74.\n\n \n\n2. Identify modified equipment by marking in a permanent manner “-001\" adjacent to the PA-1010B connector.\n\n \n\nCompliance: Before 31 March 1977.\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":{"_metrics":{"model":"kimi-k2.5","source":"moonshot-batch","completionTokens":1926},"content_quality":"ok","complexity_score":1,"scope_assessment":{"changed":false,"description":"This appears to be the original directive as issued. The title refers to modification of equipment, not modification of the directive itself. The compliance date and directive numbering suggest this is the initial issuance establishing the original scope for this specific safety requirement."},"complexity_factors":["Extremely short document (approximately 100 words)","Only two simple, unconditional requirements","Limited applicability criteria (single part number and specific serial number ranges)","No cross-references to other legislation or regulations","No definitions or interpretation sections"],"plain_english_summary":"**What this is:** An airworthiness directive (a mandatory safety order from the aviation regulator) requiring specific modifications to certain Sunair high-frequency radio transceivers used in aircraft.\n\n**Who it affects:** Aircraft owners or operators with a Sunair HF Transceiver model ASB-130() containing:\n- Power amplifier/power supply part number PA-1010B; **and**\n- Serial number 8366 or below (for 28-volt systems), **or** serial number 5383 or below (for 14-volt systems)\n\n**What you must do:**\n1. **Modify the equipment** by following the instructions in Sunair Service Bulletin No. 130-001 dated 15 April 1974 (the manufacturer's official repair/upgrade instructions)\n2. **Permanently mark the equipment** by adding \"-001\" next to the PA-1010B connector so the modification can be visually confirmed\n\n**Why it matters:** This ensures specific radio communication equipment meets safety standards and allows mechanics to quickly identify which units have been upgraded, preventing potential communication system failures."}},"importantCases":[],"_links":{"self":"/api/acts/ad-rad-31-sunair-hf-transceiver-modification","history":"/api/acts/ad-rad-31-sunair-hf-transceiver-modification/history","analysis":"/api/acts/ad-rad-31-sunair-hf-transceiver-modification/analysis","conflicts":"/api/acts/ad-rad-31-sunair-hf-transceiver-modification/conflicts","importantCases":"/api/acts/ad-rad-31-sunair-hf-transceiver-modification/important-cases","documents":"/api/acts/ad-rad-31-sunair-hf-transceiver-modification/documents"}}