STC Overview

Providing integrated engineering and aftermarket support for customers across the aerospace and defense industry.

System Technical Corporation is a leading engineering and defense contracting company that designs and builds products for aerospace and military applications. Our customers include the US Government, Fortune 500 companies and clients worldwide.

Since its inception in 1996, STC has maintained a holistic understanding of the defense aftermarket space, consistently and reliably providing customers with engineering support and equipment that meets rigorous standards with competitive lead times. 

At STC, quality is a discipline ingrained in the culture of our organization. Our longstanding emphasis on Total Quality Management and Lean Manufacturing Principles, combined with our information systems and business analytics, enable us to sustain our competitive edge.


Ryan Frommelt

Vice President & General Manager, STC

Ryan Frommelt

Ryan Frommelt is a former US Navy submarine officer with over 15 years experience in the defense maritime arena. Ryan spent seven years at Rolls-Royce in various roles including as a program executive managing a $30M budget with the US Navy, U.S. Coast guard, Military Sealift Command, and foreign militaries. Prior to joining AMS Group, Ryan led business development and capture teams at L3Harris Technologies, including the capture of a sophisticated $400 million maritime program.

Adam Waterman

Senior Vice President, Technology & Operations

Adam Waterman

Adam Waterman has over 20 years of experience in the aerospace and defense industry. Adam has led teams in operations, capture, engineering, and product development, and has extensive experience utilizing technology to solve complex problems.


System Technical Corporation (STC) designs and manufactures a broad range of defense and aerospace electrical assemblies, spare parts and other specialized equipment for maintenance, repair and overhaul applications.

Our areas of expertise include:

Electrical Engineering and Assembly – cable harnesses, circuit cards, electrical panels and distribution boxes

Mechanical Engineering and Assembly – cast and forged assemblies, fabricated parts, armor

Design and build, build to print, and contract manufacture of mechanical and electrical assemblies

The products we build support the aircraft, combat vehicles and other military aftermarket requirements of the United States armed forces and allied nations worldwide. STC maintains an effective Quality Management Program and a Quality Assurance Program that is in full compliance with ISO 9001:2008 standards. 

Platforms We Support

STC has extensive experience and familiarity with supporting the following platforms and weapons systems:      

  • Combat Vehicles 
  • Tactical Vehicles 
  • Aircraft 
  • Aircraft Engines 
  • Naval platforms 

If you would like to submit a Request for Quote to STC, please do so here.

For a complete list of the spare parts we can provide, please see our product directory or contact us.

Custom IT Solutions

STC develops custom IT solutions for the defense and aerospace industry. These software applications are developed by the same team that designed STC’s own proprietary ERP system and project management tools. 

Contact the STC Team

System Technical Corporation

960 Knox Street Building B
Torrance, CA 90502-1086

o / (310)845-9400
f / (310)338-0482
e /
CAGE Code: 072X9