HEICO: How a family built the generic drug company of aircraft parts

Executive overview

Airlines are trapped between a Boeing/Airbus duopoly for new planes and a web of OEM mini-monopolies for spare parts — with no alternative source of supply. HEICO's PMA business reverse-engineers non-safety-critical aircraft parts, certifies them with the FAA, and sells them to airlines at a 30–40% discount to OEM prices.

Under the Mendelson family since 1990, sales have compounded at 15% annually and net income at 18%. The business compounds through a combination of organic PMA development, repair and overhaul capabilities, and a disciplined acquisition machine.

The core insight: HEICO deliberately caps PMA market share at ~30% per part to avoid triggering OEM price cuts — a calculated prisoner's dilemma strategy that preserves the discount over time.

The aerospace aftermarket opportunity

• Aircraft have 25–30 year lifespans; platform production runs last 10–20 years — parts selling windows of 35–40+ years
• OEM replacement parts market: ~$40bn/year; aftermarket maintenance: ~$100bn/year
• Aftermarket carries far higher margins — suppliers often sell to Boeing at cost, then recoup returns through airline aftermarket pricing at 3–4x
• FAA certification creates regulatory moats; being "designed in" to an aircraft gives OEMs sole-source pricing power
• Airlines are the squeezed party: duopoly on new planes, monopolies on parts

How PMA parts work

• Parts Manufacturer Approval (PMA): HEICO reverse-engineers OEM parts and certifies them independently with the FAA
• PMA certification is more rigorous than original OEM certification — focused entirely on the specific part
• Parts require a second approval from each airline, creating a genuine barrier to entry
• HEICO focuses on non-safety-critical, non-life-limited parts — easier FAA approval, less friction with airlines
• New part development rate: 500–700 parts/year; current portfolio of 19,500 parts
• Zero service bulletins, zero airworthiness directives, zero in-flight shutdowns across 80m+ parts sold

Competitive position

• HEICO holds ~75% PMA market share; next closest competitor has fewer than 2,000 parts vs HEICO's 19,500
• The Wencor acquisition (largest deal ever) added ~7,000 parts and eliminated the second-largest PMA player
• Barriers to entry: FAA relationships, airline relationships, and sheer development time make replication a multi-decade project
• New entrants face a weak pitch — offering 5% savings vs HEICO's part after HEICO already overcame the initial adoption friction
• The Lufthansa partnership (1997, 20% stake in PMA business) was the pivotal accelerant: anchor customer, technical data access, and marketing validation

The go-to-market strategy

• HEICO targets ~30% market share per part, then stops — keeping OEMs viable enough not to cut prices
• Avoids life-limited parts (highest-margin OEM crown jewels) to reduce OEM hostility
• Discount starts at 30–40% and widens over time as OEMs raise prices while HEICO holds steady — can reach 50% after five years
• OEM is always the default; adoption requires educating airline procurement teams and overcoming institutional inertia
• PMA adoption is sticky — once an airline switches, there is no incentive to revert to the OEM

Beyond PMA: repair, overhaul, and distribution

• HEICO also operates the largest non-OEM repair and overhaul network and distributes OEM parts
• Bundling PMA + repair + distribution into a single offer dramatically reduces sales friction
• Example value proposition: repair a hydraulic pump using PMA and controlled OEM distribution — cheaper and faster than a pure OEM solution
• Repair relationships provide visibility into high-volume parts, informing which parts to PMA next
• The combined offering lets HEICO offer system-level savings rather than part-by-part pitching

Business segments and financials

• Total revenue ~$3.8bn (pro forma including Wencor); two segments: FSG (flight support, ~67% of sales) and ETG (electronic technologies, ~33% of sales, ~40% of profits)
• FSG margins: low 20s%; ETG margins: ~25%; ETG acts as a steady cash engine, less cyclical due to defense exposure
• Free cash flow converts at 130%+ of net income — amortization from acquisitions far exceeds required capex
• ETG analogy: analog semiconductors, but less cyclical and lower growth; 100,000+ SKUs, mission-critical sub-components for defense, aerospace, and medical systems

The Mendelson acquisition machine

• 98+ acquisitions since 1990; only two divestitures; less than $10m cumulative impairment charges
• Typical deal: mid-to-high single-digit cash multiples on businesses with high-teens to 20%+ margins, often entrepreneur-led
• Structure: seller retains ~20% equity, compensation tied to operating profit and cash growth at subsidiary level
• Over 90% of acquired businesses still led by their original entrepreneurs
• Six of HEICO's eight largest M&A years coincided with years when industry M&A spending was down 10%+
• Decentralized model: subsidiary presidents report directly to the Mendelsons with no middle layer

Ownership culture

• Mendelson family owns ~8% of equity; board owns ~2.5%; employees own over 2%
• HEICO gifts stock in the 401k plan at 5% per year — over 400 employees hold $8m+ of HEICO stock
• On average, employees own more in HEICO stock than they earn in annual compensation

HEICO vs. Transdigm

• Both: decentralized M&A programs, aftermarket and defense exposure, ownership-aligned culture
• HEICO: low leverage, customer-savings value proposition, hold-forever acquisition philosophy
• Transdigm: comfortable at 6x leverage, aggressive cost-cutting post-acquisition, price-raising strategy
• Portfolios barely overlap — Transdigm focuses on high-volume low-value parts (300,000+) that are very hard to PMA; HEICO's 19,500 parts generate comparable aftermarket revenue
• Companies cooperate in distribution: Transdigm uses HEICO subsidiaries to distribute high-value parts, which also excludes those parts from future PMA development

Risks

• A PMA part causing a crash would be existential for the industry — HEICO's 80m-part zero-incident record is the primary defense
• M&A runway is narrowing at scale; no obvious second Wencor-level deal; future deals likely shift toward ETG and smaller niche targets
• Growing scale may provoke more aggressive OEM responses (bundling, long-term service agreements, warranty invalidation)
• COVID-level demand collapse (Q3 2020: -44% organic growth) is the realistic tail risk; normal recessions produce only 2–5% travel declines

Lessons from HEICO

• Aligned incentives across management, shareholders, customers, and employees in a growing industry is a compounding formula
• Duration of growth should matter as much as magnitude when evaluating businesses
• Truly exceptional businesses are often recognizable without complex modeling — HEICO's transcripts make the management philosophy apparent quickly