What We Do
Comprehensive evaluations to ensure aircraft safety, functionality, and compliance with regulatory standards.
Urgent repair services for "Aircraft On Ground" situations, minimizing downtime and ensuring swift returns to flight.
Round-the-clock support to address aviation maintenance and service needs anytime, day or night.
We handle every aspect of your aircraft’s operation — from maintenance and compliance to crew, scheduling, and hangar services — so you can fly worry-free and focus on what matters.
Why Us
Located at Lambert-St. Louis International Airport, On Site Aircraft Service, Inc., delivers everything you need and expect for the maintenance of your aircraft. In business since 2004, our goal is to exceed your expectations in performance and quality, with on time delivery and within budget.
With dedicated teams to complete routine maintenance, AOG/MRT maintenance or inspections on your aircraft, our goal is to get you back in the air as soon as possible. We have earned the reputation as the competent team to call, not only when your aircraft is AOG, but for all your maintenance needs.
In Addition To Our On-Site Maintenance Support, You Can Find Us At:
Premium Tankers
Warehouse Management
Road Transportation
Large Warehouse
Ocean Transports
Our capabilities include the most current models as well as out of production aircraft, with extensive experience on Bombardier, Cessna, and Gulfstream. Our staff includes certified technicians on Challenger, Citation, Gulfstream, Bombardier CRJ, and Falcon aircraft.