Definition: Compose a new way to ask the same question. The new question must be asking the exact same thing as the original question does. Without any other information, you should be able to tell that the original question and the new question are the same. Preserve bracketed phrases in your new question. You can change the rest of the question provided the above requirements are satisfied. The new question must have a natural, fluent formulation, as if it were composed by a native English speaker. You will be given three pieces of information to help you create better questions. Those are: "Answer": the answer to the question, e.g., "Honolulu". "Answer Type": the type of the answer, e.g., "Location". "Auxiliary Information" is a detailed description of some concepts mentioned in the question, if any.
Input: original question: What's the development status of the rocket engine, designed by [Rocketdyne], whose Isp (sea level) is no more than [255.0]?
answer: flown
answer type: Rocket engine development status.
auxiliary information: Rocketdyne was an American rocket engine design and production company headquartered in Canoga Park, located in the western San Fernando Valley of suburban Los Angeles, in southern California. The Rocketdyne Division was founded by North American Aviation in 1955, and was later part of Rockwell International and Boeing. In 2005, the Rocketdyne Division was sold to United Technologies Corporation, becoming Pratt & Whitney Rocketdyne as part of Pratt & Whitney. In 2013, Pratt & Whitney Rocketdyne was sold to GenCorp, which merged it with Aerojet to form Aerojet Rocketdyne.

What is the name of the development status of the rocket engine, designed by [Rocketdyne], whose Isp (sea level) is no more than [255.0]?