That would be more damaging than beneficial when the first player accidentally hits his 'e' key and is horked
I have done that before. I got in a hurry and was trying to type a message, but missed the / key. Partway through typing the message, my engine shut off and I got a message that I don't have a bomb bay to open. I was able to turn the engine back on and continue.
Then there was a another time that I was really low on fuel. I turned my engine off to save the last of my fuel, and glided for twenty miles. Then I restarted my engine and landed.