Meet the team

Meet our Leadership

John Petkovic, Chief Executive Officer

John has an extensive background in aviation finance. He played a key role in establishing Macquarie’s aircraft leasing business and served as its Chief Financial Officer before his appointment as Chief Executive Officer of the new Macquarie Rotorcraft operation.

Before joining Macquarie, John was responsible for strategy at AWAS leading up to its sale. John has previously worked at PWC and is a Fellow of the Institute of Chartered Accountants. He holds a degree in Commerce from the University of New South Wales.

Greg Allen A’slinger, Chief Operating Officer

Greg A’slinger joined Macquarie Rotorcraft Leasing at its inception July 2013. Greg has an extensive Helicopter background. Formally as the President & CEO of Uniflight, an Authorized Airbus, Bell and Leonardo Customer Service Facility. The Company earned its reputation over three decades of prompt and professional support of government and commercial helicopter operators.

Mr. A’slinger has more than 30 years’ experience in the helicopter operations industry. Prior to Uniflight, Greg owned and operated Helijet Holdings, Inc. The Company provided electronic news gathering helicopters to Dallas-Fort Worth television and radio stations. Greg holds a Commercial Rotorcraft and Fixed Wing pilot license. He has logged more than 4000 Helicopter flying hours.

Greg’s community work includes Director of the Jeff Pino Foundation: “Inspire, Educate & Achieve”, building the next generation of Aviation professionals. He is a graduate of Franklin Pierce University.

Trey Wade, Chief Commercial Officer

Trey joined Macquarie from Textron, Inc. where he held several key roles, including General Manager of Cessna Aircraft Co., leading a joint venture in China producing business jets. He was also General Manager of Bell Helicopter’s commercial training and director for customer support.

In addition, Trey served in the US Army as a Company Commander, providing direct support to task forces in Kuwait.

Trey is a graduate of the US Military Academy and holds an MBA from Texas Christian University.

Con Barber, Chief Investment Officer

Con has twenty years experience in the aviation sector, filling a wide variety of technical, project management and strategic management roles. Prior to joining Macquarie, Con was the Chief Technical Officer (Fixed Wing Aircraft) with the Irish Air Corps and he previously held a key role delivering the Irish Air Corps helicopter fleet renewal program – successfully introducing a new fleet of EC135 and AW139 multi-mission helicopters. Con has also worked for Rose Aviation Ltd, the United Nations, the European Union and the Swedish Air Force in various aviation leadership roles in Europe and Africa. Con holds a primary degree in Aeronautical Engineering from Queen’s University and has various post graduate qualifications including an MBA and MSc from Smurfit Business School, University College Dublin and an MA from the National University of Ireland. Con speaks conversational French and Swedish

Ken Dowling, Senior Vice-President Finance

Prior to joining Macquarie, Ken was Vice President Finance, and subsequently Senior Vice President Finance, with Waypoint Leasing.  Ken joined Waypoint Leasing at its inception in 2013 from Aercap, one of the world's largest aircraft leasing companies, where he was appointed Senior Manager Group Finance following the merger between Genesis Lease Limited and AerCap in 2010. At Genesis Ken started as Finance Manager and progressed to Business Planning Manager. Formerly he was Head of Financial Reporting at Challenger Financial Services Limited, a listed Australian Financial Services company. Ken is a Fellow of The Association of Chartered Certified Accountants (ACCA) and holds a BBS from University of Limerick.

Sarah Johnston, General Counsel

Sarah has been General Counsel of Macquarie Rotorcraft since its inception.

Before joining Macquarie Rotorcraft, Sarah served as Corporate Counsel of Willis Lease Finance Corporation and earlier as Associate General Counsel for Building Materials Holding Corporation. Sarah also practiced law at Gibson, Dunn & Crutcher where she advised clients on secured finance, business restructuring and bankruptcy matters.

Sarah graduated from the UC Berkeley School of Law and also studied Finance at Santa Clara University.

Meet our commercial team

Simon Dahm, Vice President, Commercial, Europe

Simon has over 10 years of experience in the helicopter industry including OEM, Operator and Lessor. Prior to joining Macquarie, Simon was Vice President, Sales and Relationship Management, Europe with Waypoint Leasing. Simon was the Group Business Development Manager for Babcock Mission Critical Services, where he was responsible for business development initiatives. Prior to this, Simon worked with ERA Group Inc. and was based in New York. Simon holds a Bachelor with Honours in Business Administration from UNCW and Euromed Marseille.

Dimmie de Milander, Vice President, Commercial, Middle East & Africa

With more than 40 years in the helicopter industry, Dimmie has flown in excess of 8000 flying hours as a pilot, with experience in Offshore, Utility, EMS, Fire Fighting and instruction. Prior to joining Macquarie, he was the former Commercial Director for Starlite Aviation Group and Commercial Director Africa at CHC Helicopters. Dimmie also has 28 years of contract management in most of the coastal countries in Africa. He holds a degree in Aeronautical Engineering from the University of Stellenbosch and an MBA, International Marketing from UNISA.

Philip Stransky, Vice President, Commercial, Asia/Australia & Pacific

Prior to joining Macquarie, Philip was Director and subsequently Vice President of APAC Sales and Marketing, with Waypoint Leasing. Philip joined Waypoint Leasing in 2014 bringing 12 years of international business development, upstream oil and gas and asset trading experience. Prior to Waypoint, Philip was the APAC Area Manager for Seacor Marine in Singapore. While in Singapore he lead business development and growth strategy for the region. Previously, Philip worked for Seacor in Mexico, Europe the US and in Africa.

Philip graduated from Connecticut College and holds an MBA from MIT Sloan School of Management as a Sloan Fellow. He is fluent in French and conversational in Spanish.

General enquiries

Registered office

Macquarie Rotorcraft Leasing (Ireland) Limited
Place of registration: Ireland
Registration number: 535266

Americas office

550 Reserve Street, Suite 370
Southlake TX 76092
United States

United Kingdom office

Ropemaker Place
28 Ropemaker Street
London EC2Y 9HD
United Kingdom


8 Riverpoint
Bishops Quay
Limerick V94 WC6A

Hong Kong

Level 22, One International Financial Centre
1 Harbour View
Hong Kong