The image is a photograph of a sign at the Museum of Aviation in North American T-28A Trojan. The sign is rectangular in shape and has a yellow background with black text. On the left side of the sign, there is a list of specifications for the aircraft, including the engine, wingspan, length, weight, and performance. The specifications are written in black text and are divided into two columns. 

The first column lists the specifications of the aircraft in detail, with the engine being the main focus of the image. The second column lists its specifications, including its size, weight and performance, and its service ceiling. The text also mentions that the aircraft was manufactured on September 24, 1949.

At the bottom of the page, there are two bullet points that provide information about the aircraft's specifications. The first bullet point mentions that it was made in the United States, and the second bullet point states that the model was manufactured by the American Air Force. The third bullet point lists the model number, the engine type, the maximum speed, the cruising speed, and a service ceiling of 24,000 feet.