Quality Standard Commitment 

In our commitment for High Quality Standard services, our Senior Advisors that giving us guidance in our Operations are highly reputable Quality Technical duo with both 40+ years of Aviation experienced.

Mr. Virgilio Presbitero (Head Operation) - “Ver” with his more than 45 years experienced in Aviation Industry. With his passion in aviation which earned him a high respect in the industry. His numerous position held in Aviation Regulatory, Quality and Maintenance from Philippine Airlines, Civil Aviation Authority of the Philippines (formerly Philippine Air Transportation Office), Abu Dhabi Aircraft Technologies and recently CAE Parc Aviation (GECAS) Technical Consultant.

Mr. Rolando Dela Cruz (Senior Technical Advisor) - “Rolly” with his more than 40 years experience in Aviation Industry. Who is one of the highly respected man in aviation industry in the Philippines. His numerous position held in Quality and Maintenance from PADC, Philippine Airlines, Centennial Air, Pacific Airways, Cebu Pacific Airlines, Lion Airlines and FD Aviation.



Striving for the best, we promote and aim to attract, hire and retain high quality standard professional Staff or Associates. Wingbox Aviation is sensitive in selecting people as well helping our people to gear up for a correct set of skills. We conduct regular training to our team and continuous dialogue and brainstorming to properly understand new trend/technology as well all pressing issues that needed the best solutions to take in-place.

Using the current technologies, we able to provide a real-time discussion and remotely or off-site supports to the team projects. This will give benefits to clients both financially and operationally. It will be a cost efficient on which can lower the cost and participations of multiple experts/specialist will be possible which can arise a better solution or process.



Technical Management 

With the young and vibrant management that leading the team, which have flexible attitude & openness toward new ideas and innovations, but with a strong character in adhering the standard are the traits that the management team possessed. 

Engr. Darmilo Sosa (CEO/Managing Director)  – “Dar” brings 15 years’ extensive experience in aircraft leasing, technical consultant, engineering and fleet technical management from various airline, MRO and aviation consultant sectors. He graduated in the Philippines State College of Aeronautics with the degree of Aircraft Maintenance Technology. He continued his education in PATTS the degree of Bachelor of Science in Aeronautical Engineering. After passing the National Board exam for Aeronautical Engineer, he worked at South East Asian Airlines as a Technical Service Engineer/Quality Engineer. Two years after, he started his own business in Aircraft servicing and took the position of General Manager for ASTECH Aviation. He went to Singapore Airline Engineering Company to work under the Fleet Management Program in 2007. In 2009, he returned to Philippines and served as the Head of the Engineering of Zest Airways. He got a short stint of work with Air Asia Philippines as a Manager of Engineering. In 2012, he started his career with the aircraft leasing as a Technical Consultant when legacy ILFC signed him in the group, then eventually it was AerCap Aviation that let him continued the job. Concurrently he is providing Technical Consulting with AerCap Aviation, VX Capital and SGI Aviation for aircrafts returns and deliveries. He founded Wingbox Aviation in 2014 in which until now he is handling the Chief Executive Officer/Managing Director position.


Engr. Billy Joel Javier Liquido (Head of Fleet Technical Management/JV)  – graduated as BS in Aeronautical Engineering in PATTS. Well skilled individual having 15 years experience in aviation, formerly worked at South East Asian Airline before going to Singapore to worked with SIA Engineering Company Fleet Management Division in 2006. His a dedicated person and has an ability to plan, schedule, and handle many different tasks at once. Committed to give his best in everything”

Engr. Shealtiel Ursulum (Technical Director)  – “Allen” had 12 years of career with aviation leasing, consultancy and engineering, technical services, fleet technical management and maintenance planning. Prior to joining Wingbox, he worked and has a vital role with numerous airline and respective aircraft leasing. He was graduated with a degree Aeronautical Engineering. He used to work with South East Asian Airline, Zest Airline, Air Asia Philippines. SAE-EADS, FD Aviation and AimFleet Aviation. Concurrently he is a Technical Consultant for VX Capital Aircraft Leasing.

People and Training



Darmilo L. Sosa

CEO / Managing Director

Shealtiel B. Ursulum

Technical Director

Virgilio Presbitero

Head Operations

Rolando Dela Cruz

Senior Technical/Quality Advisor

Billy Joel Liquido

Head of Fleet Technical Management / Joint Venture

Maria Sheila Reyes-Sosa

Finance and Administration Director