
24/7 Availability
aircraft inspections
line maintenance
24 Hour Availability
Serving the St. Louis Region
We perform line maintenance service on Part 91, 135 and 121 aircraft. On call 24/7 supporting Lambert-St. Louis International Airport (STL), Spirit of St. Louis Airport (SUS), St. Louis Downtown Airport (CPS), MidAmerica Airport (BLV), as well as the smaller airports within the St. Louis region, we are ready to rectify the demands of your aircraft anywhere in the St. Louis region.
Lambert-St. Louis International (STL)
Spirit of St. Louis Airport (SUS)
St. Louis Downtown Airport (CPS)
MidAmerica Aiport (BLV)
welcome
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.
Location
On Site Aircraft Service, Inc.
5995 James S. McDonnell Blvd.
St Louis, MO 63134
Phone/Fax
Office: (314) 731-1737
Fax: (314) 731-1739
With a dedicated team to complete line maintenance, routine 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.
CAPABILITIES

CAPABILITIES
Our capabilities include the most current models as well as out of production aircraft, with extensive experience on Bombardier, Cessna, and Gulfstream.
STAFF
Our staff includes certified technicians on Challenger, Citation, Gulfstream, Bombardier CRJ, and Falcon aircraft.
NEWS
May 9, 2017
On Site Aircraft Service Announces New Location & Partnership
On Site Aircraft Service, Inc. Announces
New Location at MidAmerica Airport, Partnership with Allegiant Air
St. Louis, MO, May 9, 2017 – On Site Aircraft Service, Inc. is pleased to announce the opening of a new line maintenance facility at MidAmerica Airport. The company will serve as Allegiant Air’s on-site business partner, providing proactive service by interfacing with each arriving flight and serving any maintenance need that may arise, in a timely manner. The new maintenance facility will help support Allegiant’s popular and increasing service at MidAmerica.
With this new facility, On Site Aircraft Service, Inc., which opened its doors on May 1, will also serve as an on-call provider for other maintenance needs at the fast-growing St. Clair County airport.
For more information, please email press@onsiteaircraftservice.com.
SUBMIT AOG REQUEST
Quickly submit an AOG request by using the form or by calling (314) 731-1737 ext. 1
Additional emails concerning an AOG request can be sent to mx@osas.aero
CONTACT
24/7 AVAILABILITY
PHONE/FAX
AOG Requests: (314) 731-1737 ext. 1
Fax: (314) 731-1739
Location
On Site Aircraft Service, Inc.
5995 James S. McDonnell Blvd.
St Louis, MO 63134