Global Aircraft Gearbox Market Report

Global Aircraft Gearbox Market Size

The global aircraft gearbox market size was valued at USD 4.21 billion in 2025 and is anticipated to reach USD 4.41 billion in 2026 and USD 6.42 billion by 2034, growing at a CAGR of 4.8% during the forecast period from 2026 to 2034.

Aircraft Gearbox defines a component that is responsible for the transmission system and helps to manipulate the rotational speed. In addition, planes have a gearbox for the special function of reducing the output speed of the engine before the propeller starts. The airplane gearbox can be of different types depending on the size of the airplane. Most jet engines are equipped with accessory transmission gearboxes that drive AC generators, hydraulic pumps, oil pumps, and other necessary accessories. If the engine has more than one compressor segment, the gearbox is driven by one of the compressor drive shafts. The gearbox uses a reduction gear to decrease the speed of the shaft between the two motors. Therefore, the gearbox works to connect the shafts and reduce the engine speed.

MARKET DRIVERS

The global market for airplane gearboxes is experiencing substantial growth due to the increase in air passenger travel in all regions.

In addition, increased research and development investments for emerging advanced gearboxes create growth opportunities for the global aircraft gearboxes market. The turbofan engine contains a gearbox between the fan and the low-pressure shaft. In addition, the geared turbojet engine improves propulsion efficiency. Additionally, in 2016, Pratt & Whitney invested in geared turbofan technology that reduces fuel consumption, emissions, and noise. These investments are expected to provide opportunities for the growth of the global aircraft gearbox market in the future.

Increased use of aircraft gearboxes in the defense sector of developing countries, increased demand for geared turbofan aircraft engines with fan gearboxes such as Pratt & Whitney PW1000G, and the introduction of lightweight gearboxes are some of the factors driving growth in the global market for aircraft gearboxes. Investments in the R&D of open rotor motors and geared turbofans, a nd the trend for fuel-efficient and environmentally friendly vehicles, are supposed to provide lucrative opportunities for market expansion.

MARKET RESTRAINTS

However, the limitations of high-altitude engines and the need for a high initial investment are hampering the market growth. The rising cost of the equipment is a crucial parameter that can restrain the growth of the global market.

REPORT COVERAGE

SEGMENTAL ANALYSIS

By Aircraft Insights

Commercial aircraft are likely to remain the growth engines of the aircraft gearbox market for the next five years, driven by increased aircraft deliveries to support increased passenger and freight traffic, the next variants of existing programs, and the growing size of the commercial aircraft fleet.

By Gearbox Insights

The accessory gearbox segment is foreseen to experience the highest growth during the forecast period, driven by advances in technology and increased commercial aircraft deliveries.

By Application Insights

The engine segment is expected to see further growth over the outlook period, as gearboxes are an integral part of an aircraft engine and provide the thrust required for take-off and landing. Among the engine segments, turbofan will likely remain the largest and fastest-growing segment for the next five years due to the greater dominance of commercial and regional aircraft.

REGIONAL ANALYSIS

In terms of regions, North America is foreseen to dominate the global aircraft gearbox market for the next five years as the region is the manufacturing capital of the aerospace industry, with the presence of numerous OEMs, gearbox suppliers, engine makers, distributors, and component providers. The United States will continue to drive demand for aircraft transmissions in the region for the next five years. Boeing, Bombardier, Lockheed Martin, and Gulfstream are the main aircraft manufacturers, generating strong demand for gearboxes for their locally assembled aircraft. The opening of assembly plants for the Airbus A320 aircraft program in the United States is further ensuring healthy demand for aircraft gearboxes in the region.

KEY MARKET PLAYERS

Some of the major players in the global aircraft gearbox market are

• AB SKF
• BMT Aerospace
• GE AVIO Srl (Avio Aero)
• Kawasaki Heavy Industries Ltd.
• Northstar Aerospace, Inc
• afran Transmission Systems
• The Liebherr Group
• The Timken Company
• United Technologies Corporation.

RECENT MARKET NEWS

• In June 2019, Collins Aerospace Systems accepted a contract from Saab Automobile AB for the supply of power and control systems for the Boeing TX trainer, such as the auxiliary engine control unit (APECU) and the drive shaft power take-off (PTO) of the aircraft.

• In October 2018, Liebherr received a contract from Boeing Commercial Airplanes for the supply of electronic components for the main gear steering system of the 777X and 777 aircraft.

• In June 2019, Collins Aerospace Systems was awarded a contract from Saab to provide power and control systems for the Boeing TX trainer, including the aircraft's power take-off (PTO) unit auxiliary engine control (APECU).

• In March 2019, SKF signed a contract with United Technologies to supply roller bearings, ball bearings, main shaft bearings, and other components for helicopters.

MARKET SEGMENTATION

This research report on the global aircraft gearbox market has been segmented and sub-segmented based on the aircraft type, gearbox type, application, and region.

By Aircraft Type

• Commercial Aircraft
• Regional Aircraft
• General Aviation
• Military Aircraft
• Helicopter

By Gearbox Type

• Accessory Gearbox
• Reduction Gearbox
• Actuation Gearbox
• Tail Rotor Gearbox
• Auxiliary Power Unit Gearbox

By Application

• Engine
• Airframe

By Region

• North America
• Europe
• Asia-Pacific
• South America
• Middle East & Africa