Here is the number that matters most: approximately 40,000 LEAP engines have been delivered to airlines worldwide since the programme entered service. Each of those engines will require multiple shop visits over a 25 to 30-year service life. The first major wave of LEAP shop visits is only now beginning, as the initial delivery cohort reaches its first scheduled overhaul interval.
This creates a revenue visibility profile that most industrial companies would envy. Each shop visit generates several million dollars in parts and labour revenue. The contracts are long-term, often structured as time-and-materials or fixed-rate-per-flight-hour agreements that lock in revenue streams for years. And the margins are significantly higher than OE sales, where competitive pricing with Pratt & Whitney (RTX) compresses profitability.
The GE9X programme, which powers the Boeing 777X, adds another layer. While the 777X programme has faced delays, those delays actually benefit GE's aftermarket timeline by extending the period before GE9X shop visits begin, allowing the company to focus near-term aftermarket resources on the more mature CF6 and GE90 fleets.
Historically, aerospace aftermarket revenue has proven remarkably resilient through economic cycles. During the 2008-2009 financial crisis, aftermarket revenue for major engine OEMs declined only 8-12%, compared to 30-40% drops in new equipment orders. During COVID, the recovery in aftermarket revenue lagged by roughly 12 months but came back stronger than pre-pandemic levels as airlines prioritised fleet maintenance over new purchases. The cyclical resilience of this revenue stream deserves a premium valuation.