North American P-51 Mustang

Updated: October 2026 – A high, singing engine sound, a slim silhouette with a radiator scoop under the belly and a bubble canopy flashing in the sun: the North American P-51 Mustang is for many the most beautiful fighter of World War II. Militarily it has long been history, but as a warbird it draws lenses at air shows all over Europe. Here you will learn how the Mustang came about, which versions exist, how to identify it with confidence and where to get airworthy examples in front of your lens.

What is the P-51 Mustang?

The P-51 is a single-seat, single-engine fighter with a liquid-cooled V12 engine, built by North American Aviation in California and Texas. The design was led by a team around company chief James H. Kindelberger, with Edgar Schmued considered the chief designer. It became famous mainly as the long-range escort fighter that could escort US bombers deep into the German Reich and back.

The order, however, did not come from the US. In 1940 the British Purchasing Commission was looking for fighters in America and at first wanted North American to build the Curtiss P-40 under license. North American proposed its own, more modern design instead. According to the common account, the NA-73X prototype stood on the field just 102 days after the order, and it flew for the first time on October 26, 1940.

Technically the Mustang stood out for two ideas: a laminar-flow wing, developed together with the US research agency NACA, which produced little drag at high speed, and the radiator located far back under the fuselage. Depending on the source, about 15,700 to 15,900 Mustangs were built by the end of the war and beyond, a good 8,000 of them in the main version P-51D.

From Allison to Merlin: the development

The first production aircraft went to the Royal Air Force as the Mustang Mk I, and in January 1942 the first squadron received its aircraft. They were powered by an Allison V-1710. At low altitude the Mustang was fast and agile with it, but above about 4,500 meters performance dropped noticeably. The RAF therefore used it as a low-level reconnaissance and ground-attack aircraft, including in the attack on Dieppe in August 1942. The US Army ordered the A-36 Apache as a dive bomber and the P-51A as a fighter in parallel, both also with the Allison.

The breakthrough came from a British experiment. In 1942 Rolls-Royce at Hucknall installed a Merlin engine with a two-stage supercharger in a Mustang as a test. The result was so convincing that North American switched the production line. In the US, Packard built the Merlin under license as the V-1650. With the P-51B and the identical P-51C built in Dallas, a fighter was born that could keep up at high altitude and fly far thanks to a lot of fuel. The engine maker behind the Merlin is introduced on the page about Rolls-Royce.

Version	Engine	Special feature
Mustang Mk I / P-51	Allison	First batch for the RAF, reconnaissance and ground attack
A-36 Apache	Allison	Dive bomber version with dive brakes
P-51A	Allison	First pure fighter version for the US Army
P-51B / C (Mk III)	Merlin (Packard)	framed canopy, high fuselage spine
P-51D / K (Mk IV)	Merlin (Packard)	Bubble canopy, six machine guns, main version
P-51H	Merlin (Packard)	lighter, faster late version, hardly saw the war
CA-17 / CA-18	Merlin	Licensed production in Australia
TF-51D	Merlin	Two-seater, today often a warbird conversion

The P-51D finally received the all-around glazed bubble canopy, a lowered fuselage spine and six instead of four machine guns. The P-51K was nearly identical but had a different propeller. Reconnaissance versions with cameras ran as the F-6.

Escort fighter over Europe

From the winter of 1943/44 the Merlin Mustangs joined the US air forces in England and Italy. They could escort the heavy bombers of the Boeing B-17 Flying Fortress type and the Consolidated B-24 on their daylight raids to distant targets and fight the German interceptors there, such as the Messerschmitt Bf 109. That fundamentally changed the air war over Europe. Toward the end of the war the Mustang also met the Messerschmitt Me 262, the first operational jet fighter.

The history also includes the Tuskegee Airmen: the African American 332nd Fighter Group flew escort missions from Italy with Mustangs whose tails were painted red. These “Red Tails” are one of the most popular subjects for warbird paint schemes today. As with all military aircraft of this era: behind the elegant shape is an instrument of war, and many restorations deliberately commemorate pilots and units.

The RAF flew Merlin Mustangs as the Mustang Mk III and Mk IV alongside the Supermarine Spitfire and the Hawker Hurricane, among other things as escort for bombers such as the Avro Lancaster.

Postwar: Korea, Switzerland and South America

After 1945 the Mustang stayed in service for a long time. In 1948 it became the F-51 in the US. In the Korean War from 1950 it served mainly as a ground-attack aircraft and suffered heavy losses to ground fire until jets replaced it. According to the literature, West Virginia ended the last service with the US Air National Guard in January 1957.

Exciting for spotters from the German-speaking region: the Swiss Air Force bought 130 Mustangs from US stocks in 1948, mostly P-51Ds, and flew them until 1958. The Mustang in the Swiss Air Force Museum Dübendorf recalls that era today. Sweden also used the Mustang from 1945 as the J 26; a Mustang is shown by the Swedish Air Force Museum in Linköping. Many other air forces, from Israel to Latin America, kept flying it. The Dominican Republic is considered the last military operator, retiring its Mustangs in 1984.

In parallel the civil career began. Surplus aircraft went to private individuals and air racing pilots, and the company Cavalier converted Mustangs into civil tourers and later again for military customers. Many of the warbirds that still fly today come from this stock.

The three features that are enough to identify it

The final certainty comes from the registration. Warbirds in Europe often carry the British G-, the German D- or the US N-register, but the aircraft usually shows a historic military number. How to read the old serial numbers is explained in US military serials, and for British warbirds British G registrations helps.

Mustang, Spitfire, Bf 109 or Texan?

At air shows the big warbirds often stand side by side. The finder helps you narrow it down.

The North American T-6 Texan is the most common mix-up for beginners because it comes from the same company and can be painted similarly. The radial engine and the two seats rule it out quickly, though. The Supermarine Spitfire sounds similar but has the unmistakable elliptical wing. The Messerschmitt Bf 109 lacks the belly scoop. More practice with old types comes from Recognizing vintage aircraft in the sky, and if you prefer to identify by ear, you will find tips in Identifying aircraft types by sound.

Airworthy Mustangs in Europe

Most airworthy Mustangs are in the US. In Europe the stock is smaller but surprisingly widely spread. There is no definitive, current list: aircraft change owners, go into restoration or drop out after damage. The following focal points are based on reference works and operator information as of October 2026.

Great Britain. The center of the European warbird scene is IWM Duxford in Cambridgeshire. According to reference works, several private Mustangs are based there and at North Weald, and more fly from Goodwood. At the air shows in Duxford Mustangs are a staple of the program, and the spot IWM Duxford describes the location.

Austria. The Flying Bulls in Salzburg have a P-51D from 1944 in their fleet, alongside a B-25 Mitchell and an F-86 Sabre from the same stable. The collection is at home in Hangar-7 at Salzburg Airport; which aircraft is there when changes. Tips for visiting are given by the spot Hangar-7 at Salzburg Airport.

Germany. According to reference works, several airworthy Mustangs are based in Baden-Württemberg, mainly at Bremgarten airfield near Freiburg and in Albstadt-Degerfeld. You are most likely to experience them publicly at airfield festivals and at the Hahnweide vintage aircraft fly-in.

Elsewhere in Europe. According to overviews, Mustangs also fly in the Netherlands, Belgium, the Czech Republic, Italy and Sweden. Air shows in Europe gives an overview of dates where warbirds appear; for Austria, take a look at AIRPOWER in Zeltweg.

Mustangs in museums

Static examples are easier to plan around. According to reference works, a Mustang is shown by, among others:

• the Swiss Air Force Museum Dübendorf (spot info)
• the RAF Museum Hendon and the RAF Museum Cosford
• the Musée de l’Air et de l’Espace in Le Bourget
• the Nationaal Militair Museum in Soesterberg
• the Museo Storico dell’Aeronautica Militare in Vigna di Valle
• the Swedish Air Force Museum in Linköping

If you travel to the US, the National Museum of the US Air Force in Dayton has one of the best-known Mustangs. How rare your sighting really is by comparison, you can judge with Rating the rarity of a sighting.

Photo tips especially for the Mustang

The Mustang is a photogenic aircraft: polished skin or camouflage, nose art and a silhouette that works from every angle. A few points make the difference.

General tips for the day at the display line are collected in Photographing air shows.

Common mix-ups and how to rule them out

Conclusion

The P-51 Mustang tells a remarkable story: designed in a few months on behalf of the British, brought to success with a British engine and made famous as an escort fighter. After decades in air forces around the world it lives on today as a warbird. You can recognize it in seconds, and with some planning you can still see and hear it in the air in Europe.