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A coalition of airport users has backed calls from lobby group Airlines for Australia and New Zealand for reforms to the way airports are regulated.
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The Senate Rural and Regional Affairs and Transport Committee has published its report into the operation, regulation and funding of regional air services.
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The International Air Transport Association (IATA) says the Productivity Commission's (PC) draft report into the economic regulation of the nation's airports reached its conclusions without a balanced assessment of the evidence.
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Airlines for Australia and New Zealand has expressed a "profound sense of disappointment" with the Productivity Commission's airports inquiry.
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Virgin Australia chief executive John Borghetti has welcomed calls for a review of Sydney Airport's hourly movement cap and arrangements for regional services.
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Melbourne Airport chief executive Lyell Strambi says investors in Australia's airports need regulatory certainty over their investments.