{"id":"F2009L04210","name":"CASA OAR 193/09 - Determination of controlled aerodrome - Karratha","slug":"casa-oar-193-09-determination-of-controlled-aerodrome-karratha","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":81888,"registerId":"commonwealth-F2009L04210-current","compilationNumber":null,"startDate":"2026-04-02","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"CASA OAR 193/09 - Determination of controlled aerodrome - Karratha","content":"Instrument number CASA OAR 193/09\n\nI, peter beilby cromarty, General Manager, Airspace and Aerodrome Regulation Group, a delegate of CASA, make this instrument under paragraph 5 (1) (e) of the Airspace Regulations 2007 (AsR 2007).\n\n\\[Signed P. B. Cromarty\\]\n\nPeter Cromarty  \nGeneral Manager  \nAirspace and Aerodrome Regulation Group\n\n13 November 2009\n\nDetermination of controlled aerodrome — Karratha\n\n1 Commencement\n\nThis instrument commences on 18 November 2010.\n\n> Note In accordance with subregulation 5 (3) of AsR 2007, this instrument has been published in NOTAM. The determination made by this instrument will be given further effect under the Aeronautical Information Publication – Designated Airspace Handbook, and related Determination of airspace and controlled aerodromes etc to be published on 18 November 2010.\n\n2 Determination of a controlled aerodrome\n\nI determine that the following aerodrome is a controlled aerodrome:\n\n| Aerodrome | State | Code | Latitude   | Longitude   |\n| --------- | ----- | ---- | ---------- | ----------- |\n| Karratha  | WA    | YPKA | 20°42'44\"S | 116°46'24\"E |\n\n3 Consequential\n\nThis determination does not affect, and is not affected by, any Determination of airspace and controlled aerodromes etc instrument made after this instrument.","sortOrder":0}],"analysis":{"kimi_summary":{"_metrics":{"model":"kimi-k2.5","source":"moonshot-batch","completionTokens":1652},"content_quality":"ok","complexity_score":1,"scope_assessment":{"changed":false,"description":"The instrument maintains its original narrow scope of designating Karratha Airport specifically as a controlled aerodrome. It has not expanded beyond this single-purpose administrative determination."},"complexity_factors":["Only 3 short sections with minimal text","Single purpose: determining one specific aerodrome","No defined terms or interpretation section","One simple data table with fixed coordinates","No conditional logic, exceptions, or cross-references to other legislation beyond the enabling regulation"],"plain_english_summary":"This instrument designates **Karratha Airport** in Western Australia as a **controlled aerodrome**.\n\n**What this means:**\nA \"controlled aerodrome\" is an airport where air traffic control (ATC) services are active. Pilots must obtain permission (clearance) from ATC before taking off, landing, or moving on the ground, and must maintain radio contact while operating there.\n\n**Who it affects:**\n- Pilots and airlines flying to or from Karratha (airport code: YPKA)\n- Air traffic controllers managing the airspace\n- Aviation operators using the airport\n\n**Why it matters:**\nThis formal classification means aircraft movements at Karratha are actively monitored and coordinated by air traffic controllers rather than pilots operating independently. This improves safety by preventing conflicting aircraft movements, particularly important given the industrial activity (mining, resources) in the Karratha region.\n\nThe instrument specifies the airport's exact geographic coordinates (20°42'44\"S, 116°46'24\"E) and commenced operation on 18 November 2010."}},"importantCases":[],"_links":{"self":"/api/acts/casa-oar-193-09-determination-of-controlled-aerodrome-karratha","history":"/api/acts/casa-oar-193-09-determination-of-controlled-aerodrome-karratha/history","analysis":"/api/acts/casa-oar-193-09-determination-of-controlled-aerodrome-karratha/analysis","conflicts":"/api/acts/casa-oar-193-09-determination-of-controlled-aerodrome-karratha/conflicts","importantCases":"/api/acts/casa-oar-193-09-determination-of-controlled-aerodrome-karratha/important-cases","documents":"/api/acts/casa-oar-193-09-determination-of-controlled-aerodrome-karratha/documents"}}