{"id":"F2006B06507","name":"AD/RAD/5 - Collins Glide Slope Receivers, Flag Alarm and Deviation Circuits - Modification","slug":"ad-rad-5-collins-glide-slope-receivers-flag-alarm-and-deviation-circuits-modification","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":48082,"registerId":"commonwealth-F2006B06507-current","compilationNumber":null,"startDate":"2026-04-02","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/RAD/5 - Collins Glide Slope Receivers, Flag Alarm and Deviation Circuits - 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/5 Collins Glide Slope Receivers, Flag Alarm NK\n\nand Deviation Circuits - Modification\n\nApplicability: All Collins Glide Slope Receivers 51V-1 and 51V-2.\n\n \n\nDocument: 1. Collins SB No. 13 for 51V-1 Equipt. and Collins SB No. 9 for 51V-2 Equipment; or\n\n \n\n2. ANO 107.9.11.2.1, Issue 2.\n\n \n\nCompliance: Before installation in an aircraft.\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":1333},"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"The directive maintains its original narrow technical scope focused solely on mandatory modifications to specific Collins avionics equipment. There is no evidence of expansion beyond the original safety purpose."},"complexity_factors":["Single-issue directive limited to two specific equipment models","Straightforward compliance trigger (before installation)","No conditional exceptions or nested requirements","Relies on external technical documents (Service Bulletins) for actual modification procedures rather than detailing them in the text"],"plain_english_summary":"This is a **mandatory safety directive** (called an Airworthiness Directive) issued by the aviation regulator for specific aircraft navigation equipment.\n\n**What it covers:**\n- **Equipment affected:** Collins Glide Slope Receivers, models 51V-1 and 51V-2\n- **What must be fixed:** The \"flag alarm\" (a visual warning indicator) and \"deviation circuits\" (which help pilots stay on the correct landing path)\n\n**Who must comply:**\n- Anyone installing these specific receiver units into an aircraft\n- Aircraft maintenance organisations and owners\n\n**What must be done:**\nBefore these receivers can be legally installed in any aircraft, they must be modified according to the manufacturer's technical instructions (Service Bulletins No. 13 or 9) or an official Airworthiness Notice.\n\n**Why it matters:**\nThis ensures the equipment provides accurate navigation signals and proper warnings to pilots during landing approaches, preventing potential safety hazards from faulty glide slope indications."}},"importantCases":[],"_links":{"self":"/api/acts/ad-rad-5-collins-glide-slope-receivers-flag-alarm-and-deviation-circuits-modification","history":"/api/acts/ad-rad-5-collins-glide-slope-receivers-flag-alarm-and-deviation-circuits-modification/history","analysis":"/api/acts/ad-rad-5-collins-glide-slope-receivers-flag-alarm-and-deviation-circuits-modification/analysis","conflicts":"/api/acts/ad-rad-5-collins-glide-slope-receivers-flag-alarm-and-deviation-circuits-modification/conflicts","importantCases":"/api/acts/ad-rad-5-collins-glide-slope-receivers-flag-alarm-and-deviation-circuits-modification/important-cases","documents":"/api/acts/ad-rad-5-collins-glide-slope-receivers-flag-alarm-and-deviation-circuits-modification/documents"}}