{"id":"F2017L00974","name":"CASA EX104/17 - Exemption — Mode S transponder equipment at Brisbane aerodrome for Aviation Careers Expo","slug":"casa-ex104-17-exemption-mode-s-transponder-equipment-at-brisbane-aerodrome-for-aviation-careers-expo","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":96870,"registerId":"commonwealth-F2017L00974-current","compilationNumber":null,"startDate":"2026-04-02","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"CASA EX104/17 - Exemption — Mode S transponder equipment at Brisbane aerodrome for Aviation Careers Expo","content":"Instrument number CASA EX104/17\n\nI, GRAEME MILLS CRAWFORD, Aviation Group Manager, a delegate of CASA, make this instrument under regulations 11.160 and 11.205 of the Civil Aviation Safety Regulations 1998.\n\n\\[Signed G.M. Crawford\\]\n\nGraeme M. Crawford  \nAviation Group Manager\n\n27 July 2017\n\nExemption — Mode S transponder equipment at Brisbane aerodrome for Aviation Careers Expo\n\n1 Duration\n\nThis instrument:\n\n(a) commences on 18 August 2017; and\n\n(b) is repealed at the end of 21 August 2017.\n\n2 Application\n\nThis instrument applies to a person using an aircraft:\n\n(a) at Brisbane aerodrome (YBBN) at the invitation of Aviation Australia Pty Ltd, ARN 580292, as the organiser of the Aviation Careers Expo held at the aerodrome on 19 and 20 August 2017; and\n\n(b) that does not meet the requirements relating to Mode S transponder equipment mentioned in paragraph 9E.4 of Civil Aviation Order 20.18 (CAO 20.18).\n\n3 Exemption\n\nThe person is exempt from compliance with:\n\n(a) paragraph 9E.4 of CAO 20.18; and\n\n(b) paragraph 207 (2) (b) of CAR to the extent that the paragraph requires a person to meet the requirements mentioned in paragraph 9E.4 of CAO 20.18.\n\n4 Conditions\n\nThe exemption is subject to the following conditions:\n\n(a) the person must ensure that the aircraft is equipped with a serviceable Mode A/C transponder that meets the requirements for operation in the airspace over Brisbane aerodrome;\n\n(b) the person must prepare a flight plan and ensure that item 18 of the flight plan seeking clearance for the aircraft during the operations includes the text:\n\n“RMK/CASA MODE S EXEMPT”.","sortOrder":0}],"analysis":{"kimi_summary":{"_metrics":{"model":"kimi-k2.5","source":"moonshot-batch","completionTokens":1592},"content_quality":"ok","complexity_score":1,"scope_assessment":{"changed":false,"description":"The instrument maintains its original narrow scope, applying solely to the Aviation Careers Expo at Brisbane aerodrome over a 4-day period. There is no evidence of scope creep beyond this specific temporary exemption purpose."},"complexity_factors":["Extremely short instrument with only 4 operative sections","No interpretation section or defined terms","Single, time-limited exemption with minimal conditional logic","Narrow application limited to specific dates, single location, and invited participants only"],"plain_english_summary":"**What this does:**\nThis instrument temporarily exempts certain aircraft from having modern **Mode S transponder** equipment (a radio device that identifies aircraft to air traffic control) when flying at Brisbane Airport during a specific careers expo in August 2017.\n\n**Who it affects:**\nPilots and aircraft operators invited to the Aviation Careers Expo at Brisbane aerodrome (YBBN) on 19–20 August 2017, whose aircraft lack Mode S transponders.\n\n**The exemption:**\nNormally, aircraft at major airports must carry Mode S transponders. This allows eligible aircraft to use older **Mode A/C transponders** (a basic identification system) instead, but only for this specific event.\n\n**Key conditions:**\n* The aircraft must still have a working Mode A/C transponder suitable for Brisbane airspace\n* The flight plan must include the exact text: **\"RMK/CASA MODE S EXEMPT\"**\n\n**When it applies:**\nOnly from 18–21 August 2017 (covering setup and event days). After 21 August, the exemption automatically expires."}},"importantCases":[],"_links":{"self":"/api/acts/casa-ex104-17-exemption-mode-s-transponder-equipment-at-brisbane-aerodrome-for-aviation-careers-expo","history":"/api/acts/casa-ex104-17-exemption-mode-s-transponder-equipment-at-brisbane-aerodrome-for-aviation-careers-expo/history","analysis":"/api/acts/casa-ex104-17-exemption-mode-s-transponder-equipment-at-brisbane-aerodrome-for-aviation-careers-expo/analysis","conflicts":"/api/acts/casa-ex104-17-exemption-mode-s-transponder-equipment-at-brisbane-aerodrome-for-aviation-careers-expo/conflicts","importantCases":"/api/acts/casa-ex104-17-exemption-mode-s-transponder-equipment-at-brisbane-aerodrome-for-aviation-careers-expo/important-cases","documents":"/api/acts/casa-ex104-17-exemption-mode-s-transponder-equipment-at-brisbane-aerodrome-for-aviation-careers-expo/documents"}}