This document is a report detailing the Global Services Forecast (GSF) for commercial aviation, projecting services demand over the next 20 years for aircraft with more than 100 seats and freighters exceeding 10 tons. It outlines three primary market streams: 'Maintain', which includes maintenance, spares, and lifecycle services; 'Train & Operate', covering training and flight operations; and 'Enhance', which encompasses upgrades and connectivity services. The forecast indicates that the services market will support over 24,000 aircraft in 2023, with an expected demand of $130 billion. It anticipates that the market will nearly double by 2042, reaching $255 billion, with a compound annual growth rate (CAGR) of 3.6%. Additionally, the report highlights the need for 680,000 new technicians, 590,000 new pilots, and 920,000 new cabin crew over the next two decades, totaling over 2.2 million skilled personnel required in the industry.