One-Off

Back in nineteen-hundred and twenty-eight the folks at Boeing took a look at one'a their PW-9D pursuit ships... United States Army serial number 28-41 to be exact... and said, "We can do better". So they yanked the ship's Curtiss D-12 engine, replaced it with a Curtiss V-1570 Conqueror and, viola...

...the XP-7, or Boeing Model 93, was born.

The result of this conversion was a reduction in weight of some 75 pounds and an increase in speed of about 17mph or so over the PW-9D. Unfortunately this was about all the remaining potential to be coaxed out of the original Boeing Model 15 design and no further P-7s were produced.

With testing finished the XP-7 was converted back to PW-9D configuration, and 'ole 28-41 soldiered on with the U.S.A.A.C. for a few more years before being destroyed in a takeoff accident on September 4th, 1931 while serving with the 43rd School Squadron at Kelly Field, Texas.

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