Solutions for the Aircraft Industry Aircraft Modifications, Maintenance, Inpections, Conversions FMS is a Aircraft Maintenance and Modification Center located at Lakeland Linder Regional Airport Lakeland, Florida. FMS specializes in complete airframe upgrades, maintenance, modifications, overhaul, inspections and conversions for a variety of aircraft including: Boeing: 737 all series aircraft FMS employs a dedicated staff of FAA certified mechanics and technicians to accomplish worldwide aircraft modification and maintenance programs within scheduled time frames.  Our quality control, efficiency and on-time delivery set the standard of FMS and compliment our goal to remain within budget guidelines.