STS Aviation Services – Tank Tigers, Inc. ABOUT US. We offer fuel systems maintenance, field and support, structural modification, and fuel cell repair and overhaul services to the aerospace industry. We are a part of the STS Aviation Group. Aviation Services - We are a leading supplier of fuel system services. POSITION. Aircraft Fuel Cell and Fuel Systems Supervisor. NUMBER OF VACANCIES. 1. MAIN DUTIES AND RESPONSIBILITIES. Qualified employees w...