HEICO is the world's leading manufacturer of FAA-approved jet engine and aircraft component replacement parts outside original equipment manufacturers, as well as a significant producer of electronic equipment for aerospace, defense, space, medical, telecommunications and industrial markets. Its Flight Support Group designs and manufactures lower-cost replacement parts, repairs and overhauls aircraft components, and supplies specialty aerospace and defense parts to commercial airlines, militaries and the U.S. Department of Defense, while its Electronic Technologies Group produces mission-critical subcomponents such as power supplies, microwave products, infrared equipment, connectors and radiation detectors for harsh environments, with roughly half of its sales derived from military and defense customers. The company generates revenue from selling replacement parts, repair and overhaul services, and electronic components to a diversified customer base spanning commercial aviation, military operators, defense contractors, repair stations and original equipment manufacturers, with no single customer representing more than 10% of sales.