STS Services, Inc. - Specializes in the recruitment and staffing of skilled aviation technicians under contract to the aerospace industry since 1981

Airplanes, Inc. - The total maintenance personnel solution provider via on-site/integrated personnel and compliance management of contract labor.

STS Direct Hire Inc. - Providing direct placement solutions to meet the demanding needs of the marketplace. DirectHire provides skilled, dependable, professional employees accompanied with an experienced, knowledgeable, and responsive service team.

STS Engineering Inc. - Providing quality engineers to meet the demanding needs of the aerospace industry. STS Engineering technical professionals include engineers, designers, drafters, project managers, tool designers, illustrators, and CAD operators. STS Engineering provides skilled, dependable, dedicated, professional employees accompanied with an experienced, knowledgeable, responsive service team.

AeroTrain, Inc. - Provides maintenance and organization for online (web-based) retrieval of training documentation (OJT, FAM, OSHA, etc.)

STS Holdings, Inc. - Oversees six operating divisions that provide staffing and compliance services specifically and exclusively to the aerospace industry.

STS Component Solutions, LLC. - a global leader in the aerospace industry, specializing in materials management, OEM Distribution and supply chain management solutions.