{"id":"F2010L03268","name":"CASA OAR 179/10 – Amendment of instrument CASA OAR 173/10 – Determination of airspace and controlled aerodromes etc","slug":"casa-oar-179-10-amendment-of-instrument-casa-oar-173-10-determination-of-airspace-and-controlled-aer","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":85505,"registerId":"commonwealth-F2010L03268-current","compilationNumber":null,"startDate":"2026-04-02","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"CASA OAR 179/10 – Amendment of instrument CASA OAR 173/10 – Determination of airspace and controlled aerodromes etc","content":"Instrument number CASA OAR 179/10\n\nI, peter BEILBY cromarty, Executive Manager, Airspace and Aerodrome Regulation Division, a delegate of CASA, make this instrument under regulation 5 of the Airspace Regulations 2007.\n\n\\[Signed P. B. Cromarty\\]\n\nPeter Cromarty  \nExecutive Manager  \nAirspace and Aerodrome Regulation Division\n\n14th December 2010\n\nAmendment of instrument CASA OAR 173/10 — Determination of airspace and controlled aerodromes etc\n\n1 Commencement\n\nThis instrument commences on 16 December 2010.\n\n> Note The instrument was published in the AIP on 16 December 2010. The instrument is also a legislative instrument and it was registered before it commenced.\n\n2 Amendment\n\nInstrument CASA OAR 173/10 is amended as set out in Schedule 1.\n\nSchedule 1 Amendment\n\n\\[1\\] Schedule 3 – Class A Airspace, YBBB – YMMM/Melbourne FIR CTA A2, Lateral Limits\n\nomit\n\n65 00 00S 163 00 00E, 65 00 00S 075 00 00E\n\n06 00 00S 075 00 00E\n\ninsert\n\n80 00 00S 163 00 00E, 80 00 00S 075 00 00E\n\n06 00 00S 075 00 00E\n\n\\[2\\] Schedule 10 – Controlled aerodromes\n\nomit\n\nBRISBANE QLD YBBN 27 23 03S 153 07 03E\n\ninsert\n\nBRISBANE QLD YBBN 27 23 03S 153 07 03E\n\nBROOME WA YBRM 17 56 59S 122 13 40E\n\n\\[3\\] Schedule 10 – Controlled aerodromes\n\nomit\n\nJANDAKOT WA YPJT 32 05 51S 115 52 52E\n\ninsert\n\nJANDAKOT WA YPJT 32 05 51S 115 52 52E\n\nKARRATHA WA YPKA 20 42 44S 116 46 24E","sortOrder":0}],"analysis":{"kimi_summary":{"_metrics":{"model":"kimi-k2.5","source":"moonshot-batch","completionTokens":2412},"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"Technical amendments within the original purpose of determining airspace boundaries and controlled aerodromes. While the geographic extent of Class A airspace expands significantly southward and two aerodromes are added, this does not alter the fundamental regulatory scope or intent of the parent instrument."},"complexity_factors":["Requires cross-referencing with parent instrument CASA OAR 173/10 to understand full context","Technical aviation coordinate formatting (degrees, minutes, seconds)","Specialised aviation terminology (FIR, CTA, Class A Airspace, controlled aerodromes)","Mechanical amendment structure (omit/insert) dependent on external document"],"plain_english_summary":"This instrument updates Australia's airspace rules by making three technical changes to CASA OAR 173/10:\n\n**1. Expanding Class A Airspace southward**\nThe southern boundary of a high-level controlled airspace zone (Melbourne FIR CTA A2) is moved from 65° South to 80° South latitude. **Class A airspace** is strictly controlled airspace where air traffic control manages all flights and specific rules apply.\n\n**2. Adding Broome as a controlled aerodrome**\nBroome Airport (YBRM) in Western Australia is added to the list of **controlled aerodromes** — airports with active air traffic control towers and specific procedures for takeoffs and landings.\n\n**3. Adding Karratha as a controlled aerodrome**\nKarratha Airport (YPKA) in Western Australia is also added to the controlled aerodromes list.\n\nThese changes ensure the official airspace maps reflect current operational requirements and expand controlled air services to these regional Western Australian airports."}},"importantCases":[],"_links":{"self":"/api/acts/casa-oar-179-10-amendment-of-instrument-casa-oar-173-10-determination-of-airspace-and-controlled-aer","history":"/api/acts/casa-oar-179-10-amendment-of-instrument-casa-oar-173-10-determination-of-airspace-and-controlled-aer/history","analysis":"/api/acts/casa-oar-179-10-amendment-of-instrument-casa-oar-173-10-determination-of-airspace-and-controlled-aer/analysis","conflicts":"/api/acts/casa-oar-179-10-amendment-of-instrument-casa-oar-173-10-determination-of-airspace-and-controlled-aer/conflicts","importantCases":"/api/acts/casa-oar-179-10-amendment-of-instrument-casa-oar-173-10-determination-of-airspace-and-controlled-aer/important-cases","documents":"/api/acts/casa-oar-179-10-amendment-of-instrument-casa-oar-173-10-determination-of-airspace-and-controlled-aer/documents"}}