Does anyone else think the following paragraph is wildly incorrect?
The model 500S, also known as the model 520, is the original Twin Commander. The prototype design was certified by the CAA, the predecessor organization to the FAA, in 1950. The first 500S rolled off the assembly line in August of 1951. The 500S was known as the Shrike Commander. Despite its shorter length compared to later models, the 500S could comfortably carry seven passengers and 350 lbs. of luggage. The plane had a maximum range of 693 nautical miles that was considered long for light aircraft of the time period. The unpressurized cabin and piston engines limited the 500S to a 15,000 ft. ceiling. A prototype of the 500S is the model that completed the historic single engine flight from Oklahoma City to Washington D.C. in May of 1951.