More About Greenbird

Greenbird has been established to facilitate collaboration between industry partners, research institutions and Government to further the commercialisation of Emerging Aviation Technologies.


This best practice approach will result in the development of a safe, integrated and scalable ecosystem that will advance sustainable aviation, drive economic outcomes, and increase community accessibility and engagement.


Greenbird is led by aviation and airport industry experts with demonstrated success in the operationalisation and commercialisation of new aviation businesses, who are highly adept at navigating the complex regulatory framework which ensures the safety of aviation passengers and cargoes within Australia.

Above all else, Greenbird's founding partners are led by a strong sense of commitment to  environment and the communities that they serve whilst contributing to the physical, cultural, and social identities that define place and connect people to place and support its ongoing and sustainable evolution.

Our Directors

Sara Hales 

Managing Director, AVISTRA Pty Ltd

As General Manager of Wellcamp Airport, Sara spearheaded commercial, operational and subsidiary businesses.  Having established the airport’s international cargo business, today Sara helps communities identify and bring to fruition impactful aviation opportunities.   ​​

Sara’s experience in infrastructure development, aviation business development, strategy and negotiation, airport management and airport business diversification and growth make her insight sought after across the sector both nationally and globally.


Aviation executives, governments and key decision makers trust Sara to deliver the objective, data-driven insight and guidance required to inform their business strategies, allocate capital, prioritise resources, and manage risk.


Sara’s work on the development and implementation of an Air Freight Strategy for Darwin International Airport was Highly Commended in the 2021 Australian Airports Association Industry Corporate Project of the Year Awards.

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Keith Tonkin 

Managing Director, Aviation Projects Pty Ltd

​Keith served for 15 years in the Royal Australian Air Force, first flying short-haul tactical transport and humanitarian operations in the Caribou then projecting Australia’s Air Power with the supersonic long-range F-111 in strike and reconnaissance roles.

Nine years of international and domestic airline operations followed, flying for Qantas in Classic B747-300/400 and B737-300, 400 and 800-series aircraft.


Since then, among a long list of achievements, Keith has prepared the initial master plan for Wellcamp Airport and won industry awards for the Busselton Margaret River Airport Master Plan and the Archerfield Airport Airspace Optimisation Project. He has provided expert advice about operational risk and aerodrome safeguarding to government and corporate clients throughout Australia and in Singapore, Indonesia, East Timor, Papua New Guinea, Vanuatu and Nauru.


Keith has the ability to think critically, formulating and articulating arguments based on relevant knowledge and a superior understanding of key issues, enabling the development and implementation of practical solutions for complex problems. 


In recognition of his expertise, Keith is engaged by private companies and individuals, government agencies and community organisations to deliver expert aviation evidence in environmental and development planning cases and aviation liability matters.