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Aircraft maintenance (MRO)

The 3 companies in this industry listed on the NYSE and Nasdaq are worth $12 bn combined; the largest are StandardAero (SARO), AAR CORP (AIR) and TAT TECHNOLOGIES LTD (TATT). For each one: what it does, revenue, margin, free cash flow over the last five years and a score from 0 to 10.

Data as of October 2026

Clear leader
3 companies value 12 bn revenue 10 bn margin 5.4% free cash flow 0.4 bn avg. score 4.8
SARO holds 61.7% of the group's value, 1.8x the runner-up
Rank Ticker Company Share Value Revenue Margin FCF 5 years FCF/px Yield What it does · why it is here
1 SARO StandardAero
United States · score 4.5
62% 7.1 bn 6.3 bn 5.1% 0.2 bn 3.1% — Aircraft engine maintenance and repair · Largest independent aircraft engine maintenance company
2 AIR AAR CORP
United States · score 5.2
35% 4.0 bn 3.5 bn 5.5% 0.2 bn 4.0% — Aviation aftermarket services and parts, founded in 1955 · Illinois — revenue of $3.5bn
3 TATT TAT TECHNOLOGIES LTD
Israel · score 4.8
4% 0.4 bn 0.2 bn 11.3% 0.0 bn 1.6% — Maintenance and components for aircraft thermal systems, from Israel · Israel — revenue of $187m

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What this is. A catalogue, not a guide. Every industry with stocks listed on the NYSE or NASDAQ, the companies contending for its leadership, what each one does according to its own annual report, and the balance sheet it filed with the SEC.

The score runs from 0 to 10 and compares each company with every other one in the almanac on cash generation, profitability, debt, dividends and consistency over the last five years. The higher it is, the better the company fares in that comparison. Curious how much each part weighs? Ask at the bottom of the page.

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