The XP-51G Mustang

The XP-51G Mustang


It is with both pride and utmost conviction to our rich aviation heritage that John Morgan goes gear-up on a vital air mission to rescue a rare piece of American aviation history.

We invite you to take a brief journey back to the not so distant past to a time and place when the consequence of failure was incalculable, and the fate of the entire free world was held in the balance.

We take you back to a critical turning point in 1943. Both designer and test pilots of North American Aviation (NAA) continued pushing the engineering envelope in hot pursuit of the development of the world's fastest and most streamlined P-51 Mustang ever built. The (NAA) team proudly ushered in the birth of the "experimental" test plane XP-51G Mustang. Test pilot for the "G", Robert "Bob" Chilton, set unbroken records in speed and altitude which created a new goal for the Mustang.

Chief designer of the P-51, Edgar Schmued, who worked directly with the RAF, struck a deal to bring back to the (NAA) facility in California, the powerful new 2,200 hp 14 SM Rolls-Royce Merlin engine to be fitted with the 5-bladed, Dowty-Rotol wooden propeller. The designer believed that with this new power plant of an engine, coupled with the lighter, sleeker airframe of the "G", the plane would be incomparable. An agreement was reached. In exchange for two test engines, (NAA) promised the delivery to England of one of the only two XP-51G Mustangs ever built. Edgar Schmued brought two factory-new RM.14 SM Rolls-Royce Merlin engines to the boys back home, thus giving birth to the real-life story of this rare national treasure, tail number 43-3335, the now only surviving XP-51G left in existence.

It was a visiting British engineer sent to the (NAA) plant who first made reference to the lightweight Mustang XP-51G, calling the stripped down aircraft the "Margie Hart" after a gorgeous young stripper in Los Angeles. The nickname stuck.

About the “G”