GE Aerospace

When a Boeing 777-300ER passes overhead, you notice mainly two things: a long fuselage and two engines whose inlets look almost as big as the fuselage cross-section of a regional jet. Both come from GE Aerospace. The manufacturer from Ohio builds no aircraft, but it is inside a large share of the widebody fleets you see at hubs and cargo airports – and, through a joint venture, inside many A320s and Boeing 737s as well. If you want to sort your sightings not only by type but also by powerplant, you can’t get around GE.

From turbocharger to the world’s biggest fan

General Electric’s aviation history begins not with jets but with turbochargers. Since the early 20th century, the engineer Sanford Moss had been working at GE on superchargers that give piston engines enough air even at high altitude; in 1917 GE turned this into a business of its own. This experience with fast-spinning turbines was the reason the US government, during World War II, picked GE to build copies of Frank Whittle’s British jet engine. The first American jet powerplants were built at the Lynn plant near Boston.

After the war, GE became one of the most important suppliers for military jets. The J47 came off the line about 30,000 times in the 1950s, and the J79 powered supersonic jets such as the Starfighter and the Phantom. The decisive step for civil aviation came in 1965: with the TF39, GE won the competition for the giant transport Lockheed C-5 Galaxy. The TF39 was the first high-bypass turbofan to go into series production – a large fan at the front that pushes most of the air around the core. This very principle is still inside every modern airliner today.

From the TF39, GE developed the CF6, which entered scheduled service on the DC-10 in 1971. In 1979 the headquarters moved to Evendale near Cincinnati, where it remains today. The name changed several times – General Electric Aircraft Engines, then GE Aviation, and since July 2022 GE Aerospace. The company has been independent since April 2024: the old conglomerate General Electric spun off its medical technology and energy businesses, and aviation remained.

The four big families at a glance

For spotters, what matters most are the four large engines that hang under the wings of widebodies. They come from different decades and are therefore found on very different aircraft.

CF6: the workhorse

The CF6 is the workhorse of the first widebody generation. The DC-10 was followed, in several development stages, by the Airbus A300, the A310, the Boeing 747-400, the 767 and the MD-11 – mostly with the CF6-80C2 version. For the A330, the CF6-80E1 became the most powerful variant. By 2018 GE had delivered more than 8,300 CF6 engines, plus thousands of industrial derivatives for power plants and ships.

The CF6 is also widespread in the military: as the F103 it powered the KC-10 tanker, and as the F138, a derived CF6-80C2 version replaces the old TF39 on the modernized C-5M Super Galaxy. The engine has thus returned to the aircraft it started with.

GE90: the giant of the 777

The GE90 was developed from 1990 specifically for the Boeing 777 and entered service in November 1995 with British Airways. Technically it was a leap: as the first large engine, it had fan blades made of carbon-fiber composite – 22 of them instead of the 38 titanium blades of the CF6. The first versions had a fan of about 3.1 meters in diameter and competed with Pratt & Whitney and Rolls-Royce on the 777-200 and -200ER.

The GE90 became truly important with the more powerful version, the GE90-115B. Its fan measures about 3.3 meters, and it is the only engine for the 777-300ER, the 777-200LR and the freighter 777F. Air France put it into scheduled service in 2004. Because the 777-300ER became the most-flown long-haul jet for many large airlines, you see the GE90-115B today at practically every major hub.

GEnx: successor for the 787 and 747-8

The GEnx takes over a lot of technology from the GE90 but is smaller and more fuel-efficient. It has 18 composite fan blades with steel leading edges and a fan case that is also made of composite. There are two versions: the GEnx-1B, with a fan diameter of about 2.8 meters, is one of two options for the Boeing 787, the other being the Trent 1000. The GEnx-2B, with a fan of about 2.7 meters, was developed for the Boeing 747-8 and is the only engine there. At the end of 2011 it entered scheduled service with the 747-8F freighter.

GE9X: record holder for the 777X

The GE9X is the youngest and largest member of the family. The fan measures 134 inches, or about 3.40 meters, and the cowling about 4.40 meters. Even so, it gets by with only 16 fan blades. Inside, GE relies heavily on ceramic composites, which withstand higher temperatures than metal. In November 2017, a GE9X reached 134,300 pounds of thrust in a test – a Guinness World Record that broke the old record of the GE90-115B.

The GE9X is the only engine on the Boeing 777-9 and the 777-8. The FAA certified it in September 2020. The 777X itself, however, has had a long certification phase; whether and when you will see it in regular scheduled service depends on Boeing’s progress (as of October 2026). Until then, the aircraft show up mainly on test flights and at airshows.

How to recognize GE engines while spotting

The easiest route is through the aircraft type. On the 777-300ER, 777-200LR, 777F, 747-8 and 777X there is no alternative – GE always hangs under the wing. It gets harder with types that offer a choice of engines. On the 787, the A330ceo, the 767 and the 747-400, the airline decided at purchase, and from the outside the differences are often visible only up close.

Some airlines leave the GE, GE90 or GEnx lettering on the cowling, while others paint over it. So don’t rely on it. The most reliable route is through the registration: fleet lists and flight tracking services usually name the engine variant. The basics article explains how to read and research a registration; to tell the two Boeing widebody families apart, the article How to tell the Boeing 777 and 787 apart helps.

Where to see GE powerplants in Europe

You get to see the most GE at big long-haul hubs and cargo airports. At Frankfurt Airport, Lufthansa flies the 747-8 – with four GEnx-2B, one of the loudest and most impressive GE appearances there is. Add the 777F of Lufthansa Cargo. From the Zeppelinheim viewing platform you see both regularly.

The 777-300ER with the GE90-115B is flown by Emirates, Air France and many other long-haul airlines, among others, which you see in Frankfurt, Munich, Paris or London. At London Heathrow Airport, British Airways comes in, which once put the GE90 into scheduled service – a classic spot there is Myrtle Avenue.

For CF6 fans, the cargo hubs are the best address. At Leipzig/Halle Airport and Cologne Bonn Airport, 767 and 747 freighters with CF6 power land, in Cologne for example from UPS; from the Leipzig observation deck you can follow this well. In Luxembourg, Cargolux operates a large 747 freighter fleet, including the 747-8F with the GEnx-2B. Which freighters you can tell apart by which features is shown in the article How to recognize freighter aircraft.

GE in the narrowbody: via CFM International

On an A320 or a Boeing 737, the engine usually says not GE but CFM. Behind it is CFM International, the joint venture founded in 1974 by GE and the French Snecma, today Safran. Both partners hold half each. CFM builds the CFM56 for the classic A320 family and the Boeing 737 NG, as well as its successor, the LEAP, for the A320neo and the 737 MAX.

The 737 NG and the 737 MAX come only with CFM engines, while on the A320, CFM competes with IAE and Pratt & Whitney respectively. How to tell old and new A320s apart by their engines is explained in the article A320neo or ceo?.

A second joint venture is Engine Alliance with Pratt & Whitney. It builds the GP7200, one of the two engine options for the Airbus A380. The German engine specialist MTU Aero Engines is a partner in this program.

Regional jets, business jets and military

Below the widebody class, GE is represented mainly by the CF34. It descends from the military engine TF34, which powers, among others, the ground-attack aircraft A-10 Thunderbolt II. In civil use, the CF34 is in the Challenger business jets, in the entire CRJ family from the CRJ200 to the CRJ900, and in first-generation Embraer E-Jets such as the E175 and the E190. At many European airports, this is the GE powerplant you see most often without realizing it.

For large business jets, GE developed the Passport, which powers the Bombardier Global 7500. The joint venture with Honda produced the small HF120 for the HondaJet. In the military sector, important programs include the F110 for fighter jets such as the F-16 and the T700 for helicopters.

GE and Rolls-Royce: the eternal rivalry

On widebodies, GE Aerospace and Rolls-Royce today largely share the market, while Pratt & Whitney hardly plays a role in new widebody programs anymore. The split is interesting: at Boeing, GE is especially strong – the 777-300ER, the 747-8 and the 777X fly only with GE. At Airbus, by contrast, Rolls-Royce is the sole supplier on the A350 and the A330neo. Only on the 787 do the two compete directly.

For your sightings, that means: if you photograph long-haul traffic at a hub for an afternoon, you can roughly estimate from the types alone how many GE and how many Rolls-Royce engines you have seen. For 787s and older A330s, the registration lookup is part of the job.

Museums, sound and background

If you want to see the history of GE engines in person, large aviation museums hold many types with GE powerplants, from the J47 to the CF6. The National Museum of the US Air Force in Dayton is only about an hour’s drive from Evendale and shows numerous military aircraft with GE engines; at the Museum of Flight in Seattle there are Boeing classics. The article on the history of the Boeing 747 summarizes the development of the 747 from the first Jumbo to the 747-8 with GEnx, and Boeing 747-100 to 747-8 shows the variants themselves.

And because engines are not only seen but also heard: the deep rumble of a GE90 on takeoff of a 777-300ER sounds clearly different from the whine of a CF34 on a regional jet. How to record such differences cleanly is explained in the article Recording engine sound.

Conclusion

For spotters, GE Aerospace is a manufacturer you rarely see directly and yet photograph constantly. From the CF6 on 767 and 747-400 freighters, through the GE90-115B on every 777-300ER, to the GEnx on the 747-8, GE has shaped the look of widebody fleets for decades. With the GE9X for the 777X, the next generation stands ready, and through CFM, GE is also inside a large part of short- and medium-haul traffic.

If you know the exclusive combinations, you identify part of your sightings right away. For the rest, what always helps in spotting helps here too: a cleanly noted registration and a good photo.