HEICO Corporation is a diversified aerospace, defense, and electronics manufacturing company. The company operates through two main segments: the Flight Support Group (FSG) and the Electronic Technologies Group (ETG). The Flight Support Group, which accounted for approximately 70% of net sales in fiscal 2025, is the world's largest independent provider of FAA-approved aircraft replacement parts. It also provides maintenance, repair, and overhaul (MRO) services for commercial and military aircraft components. The Electronic Technologies Group, contributing the remaining 30% of revenue, designs and manufactures mission-critical electronic, electro-optical, and microwave components for the aviation, defense, space, medical, and telecommunications industries. HEICO's business model relies heavily on its ability to reverse-engineer and manufacture high-quality, cost-effective replacement parts that meet stringent regulatory standards, offering airlines and defense contractors an alternative to original equipment manufacturer (OEM) parts. The company has a strong track record of growth through strategic acquisitions, expanding its product portfolio and geographic footprint. HEICO serves a global customer base, including major commercial airlines, defense contractors, and military agencies worldwide.