RTX is one of the world’s largest aerospace and defense companies, combining commercial aerospace systems, aircraft engines and defense technologies through Collins Aerospace, Pratt & Whitney and Raytheon. In 2025, RTX generated $88.6 billion in net sales, up from $80.7 billion in 2024. Its business model is unusually resilient because it spans original equipment, long-duration commercial aftermarket activity and government defense programs.
Industry Problem RTX Solves
Commercial airlines, aircraft manufacturers and governments need highly reliable technologies that operate for decades under stringent safety, performance and regulatory requirements. Aircraft require engines, avionics, interiors, landing systems, power and controls; governments require sensors, missiles, air defense, communications and other mission systems. These are technically demanding markets with high qualification barriers and long product cycles.
RTX solves these problems by combining engineering depth, installed products, global support and large-scale program execution. The value proposition extends beyond selling a component once: equipment placed on aircraft can create decades of maintenance and spare-parts demand, while defense platforms can generate production, sustainment and upgrade work over long program lives.
For the strategic logic behind this portfolio, see our RTX Business Strategy 2026.
RTX’s Unique Solution
RTX’s differentiation comes from three complementary franchises. Collins Aerospace supplies aerospace and defense systems and components; Pratt & Whitney designs and services aircraft engines; Raytheon develops defense technologies including integrated air and missile defense, sensors, missiles and other mission systems.
This structure gives RTX exposure to both commercial aviation and government defense budgets. Commercial aerospace benefits from flight activity, aircraft production and aftermarket demand, while defense is supported by national-security priorities and multi-year government programs. The resulting diversification can reduce dependence on any single end market.
The vulnerabilities within this structure are analyzed in our RTX SWOT Analysis 2026.
RTX Business Model
Collins Aerospace
Collins generated $30.2 billion in 2025 net sales, up from $28.3 billion in 2024. It supplies systems across commercial and military aircraft, including avionics, communications, interiors, mechanical systems, power and controls. Revenue comes from original equipment as well as aftermarket parts and services.
Pratt & Whitney
Pratt & Whitney generated $32.9 billion in 2025 net sales, up from $28.1 billion. It designs, manufactures and services aircraft engines for commercial and military applications. Engine economics are lifecycle-oriented: original engine placements create an installed base that can generate maintenance and spare-parts revenue for years.
Raytheon
Raytheon generated $28.0 billion in 2025 net sales, up from $26.7 billion. Its defense portfolio serves U.S. and international government customers as both prime contractor and subcontractor. Program revenue is supported by demand for advanced missiles, sensors, air defense and other mission capabilities.
The political and regulatory forces shaping these businesses are examined in our RTX PESTEL Analysis 2026.
How Does RTX Make Money?
RTX monetizes four related economic streams. First, it sells original aerospace equipment to aircraft manufacturers and operators. Second, it earns commercial aftermarket revenue through spare parts, maintenance and services on installed products. Third, it develops and manufactures defense systems under government contracts. Fourth, it earns sustainment and support revenue over the life of those defense platforms.
The aftermarket is strategically important because commercial aircraft remain in service for decades. Once an RTX engine or system is installed, certification requirements, technical complexity and proprietary parts can support recurring demand. The defense equivalent is long-term sustainment, upgrades and replenishment.
Backlog adds visibility to future revenue. Long-cycle aerospace production and multi-year defense programs mean orders can extend well beyond a single reporting period, although timing and contract modifications can change conversion.
RTX Financial Analysis
RTX generated $88.6 billion of net sales in 2025, approximately 9.7% above 2024. Collins contributed $30.2 billion, Pratt & Whitney $32.9 billion and Raytheon $28.0 billion before eliminations. Growth was therefore broad-based rather than concentrated in one segment.
The segment mix is important. Pratt & Whitney was the largest segment by sales and benefited from commercial aerospace demand, while Collins combines OEM and aftermarket exposure across numerous aircraft systems. Raytheon provides a defense counterweight whose demand drivers are more closely linked to government budgets and geopolitical priorities.
RTX reported free cash flow of approximately $7.94 billion in 2025. Strong cash generation matters because aerospace and defense require continuous investment in engineering, manufacturing capacity, program execution and supply-chain resilience while also supporting shareholder returns.
Scale creates operating leverage but also magnifies execution risk. Engine quality issues, fixed-price defense contracts, supplier disruption or production inefficiencies can create substantial costs. The financial model therefore depends not only on revenue growth but on program discipline and aftermarket economics.
Future of RTX’s Business Model
Commercial aerospace remains supported by airline traffic, aircraft utilization and demand for new aircraft. Higher utilization expands aftermarket demand, while large aircraft backlogs at manufacturers support long-term original-equipment production. For RTX, the most attractive economics can emerge when a growing installed base increases future service activity.
Defense demand is also structurally significant as governments replenish inventories and invest in air defense, missiles, sensors and advanced capabilities. Raytheon’s portfolio gives RTX exposure to these priorities while Collins and Pratt & Whitney also participate in military platforms.
The central strategic opportunity is to convert record industry demand into profitable production while improving execution. Supply-chain constraints and labor availability can limit how quickly revenue converts into cash. Pratt & Whitney’s engine-related inspection and remediation requirements also demonstrate how lifecycle obligations can reverse the benefits of installed-base economics when technical issues arise.
RTX’s business model is ultimately built around long-duration platforms. A system or engine selected today can produce decades of parts and service demand; a defense program can generate development, production and sustainment revenue across many budget cycles. That longevity is the company’s greatest economic strength, provided RTX maintains technical reliability and disciplined program execution.
Source: RTX, 2025 Form 10-K.