HEICO Corporation

HEICO Corporation manufactures FAA-approved replacement parts for commercial aviation engines and airframes (through its Flight Support Group, or FSG) and high-reliability electronic components for aerospace and defense applications (through its Electronic Technologies Group, or ETG). By fiscal year 2017 (ended October 31, 2017), HEICO had completed approximately 65 acquisitions since 1990 and generated $1.52B in net sales, with consolidated operating margins of approximately 20%.

The company operated in two structurally attractive but fragmented markets. In commercial aviation aftermarket, airlines faced rising maintenance costs as OEM parts suppliers leveraged captive aftermarket channels with sole-source pricing. The FAA's Parts Manufacturer Approval (PMA) program offered an alternative: independent manufacturers could produce and sell FAA-certified replacement parts at 30–50% below OEM list prices, provided the parts met or exceeded OEM specifications. HEICO had built a portfolio of approximately 11,000 PMA-approved parts by FY2017 — the largest independent PMA portfolio in the industry — but hundreds of niche aviation parts categories remained unconsolidated. In defense electronics, dozens of family-owned specialty manufacturers produced high-reliability connectors, rotary joints, and microelectronic components for military programs without a natural acquirer.

The acquisition opportunity was substantial but required a specific structural approach: niche market leaders with proprietary regulatory certifications, resistant to capital-led replication, and dependent on founder expertise that would be lost under conventional buyout integration.

HEICO's acquisition program rests on three structural decisions that distinguish it from conventional aerospace roll-ups.

Targeting niche market leaders with regulatory moats. Each acquisition candidate must operate in a market where competitive barriers derive from technical expertise and regulatory certifications — FAA/EASA PMA approvals, defense qualification standards (MIL-SPEC, NASA QPL), or proprietary design processes — rather than from scale alone. The FSG acquires manufacturers of PMA-approved replacement parts for commercial aviation engines, airframes, and cabins; the ETG acquires manufacturers of high-reliability electronic components for defense, space, and medical applications. HEICO does not acquire businesses where a well-capitalized competitor could replicate the offering without completing the same approval process.

Preserving management through the 80-20 ownership structure. Rather than acquiring 100% of target companies, HEICO buys approximately 80% while founders or operating management retain the remaining ~20%. This eliminates the integration risk that compresses margins in conventional roll-ups: customer relationships and technical expertise remain with the people who built them, and retained equity aligns management incentives with HEICO's permanent holding horizon. Approximately 80% of HEICO's acquired subsidiaries continue to be led by their original management teams. Each of HEICO's 49 independent subsidiaries operates with near-complete autonomy; corporate overhead runs at approximately 2–3% of revenue.

Pricing PMA parts for adoption, not extraction. HEICO sets PMA part prices at 30–50% below OEM list price — deliberately passing pricing leverage to airlines to drive adoption of FAA-approved alternatives. Airlines that qualify HEICO PMA parts into their maintenance programs generate recurring demand without re-qualification risk, creating an aftermarket annuity. This contrasts directly with TransDigm's model of acquiring sole-source proprietary parts and pricing them at maximum willingness-to-pay.

Over FY2017–FY2024, HEICO completed approximately 38 additional acquisitions, expanding its PMA parts portfolio from ~11,000 to ~19,500 FAA-approved parts. The largest single transaction was the $2.05B acquisition of Wencor Group in August 2023 — a parts distributor with ~$724M in projected calendar-year revenue — at approximately 12.9x projected adjusted EBITDA, with an estimated $75M in tax benefits through FY2038.

Revenue grew from $1,524.8M in FY2017 to $3,857.7M in FY2024 — a 153% increase over seven fiscal years, representing a 14.2% compound annual growth rate. Operating income grew from $306.7M to $824.5M over the same period, with consolidated operating margins expanding from 20.1% to 21.4% despite the integration of Wencor's distribution business. Even during COVID-impacted FY2020, when commercial aviation revenue fell sharply, HEICO's consolidated operating margin held above 21% due to the ETG's defense and medical electronics revenue providing a structural hedge.

Free cash flow conversion consistently exceeded net income throughout the period. FY2024 FCF of $614.1M on net income of $514.1M represents a 119% FCF-to-net-income ratio, reflecting low capital intensity (~1.5% of revenue in FY2024) and significant non-cash amortization of acquired intangibles. Over the five-year period FY2019–FY2024, FCF grew at approximately 8.5% annually (FY2019 FCF: $408.5M derived from OCF $437.4M less capex $28.9M; FY2024 FCF: $614.1M).

The contrast with TransDigm illustrates the two poles of aerospace aftermarket roll-up economics. TransDigm operated at approximately 53% EBITDA As Defined margins in FY2024 through sole-source pricing on proprietary parts — roughly double HEICO's ~26% EBITDA margins — but carried net debt/EBITDA of approximately 4.8x versus HEICO's ~2.2x. HEICO's margin restraint and lower leverage reflect a different compounding mechanism: building a large, re-qualification-resistant installed base of PMA-approved parts across airline and MRO customers globally rather than maximizing per-unit economics on individual components.

Three conditions make this model durable.

The 80-20 ownership structure is the single most important enabler. Retaining founders as ~20% owners eliminates the post-acquisition talent flight that typically erodes margins in industrial roll-ups. The founder's economic stake remains tied to the performance of their individual business — not vested into a corporate pool — so the incentive to maintain customer relationships and technical quality persists post-close. HEICO can acquire operationally complex niche manufacturers without deploying a centralized integration function, because the people with the relevant expertise do not leave.

The FAA PMA regulatory process compounds as a moat over time. Each new PMA approval requires independent reverse-engineering and FAA technical review — a process taking months to years that cannot be shortened with capital. HEICO's ~19,500 PMA approvals represent decades of accumulated regulatory work; its nearest independent competitor holds approximately 2,000 approvals. Airlines that have already qualified HEICO's PMA parts into their approved maintenance programs have no economic incentive to re-qualify a competing supplier — the downtime risk and administrative burden of re-qualification are prohibitive. Each incremental approval deepens the switching-cost moat.

The decentralized operating model keeps corporate overhead below 3% of revenue and eliminates the integration drag that a conventional roll-up would impose. Each subsidiary retains its P&L, customer roster, and manufacturing footprint independently. Acquisitions become accretive within the first year of ownership without requiring a multi-year integration period. Without this structure, completing 3–7 acquisitions per year while sustaining 20%+ operating margins would be operationally impossible.