The price to do just the engine upgrade is $100,000. Premier says that price point has generated a lot of interested from flight schools flying Skyhawks with engines nearing TBO. "One of the first calls I received was from a flight school in the Caribbean," said Premier vice president of operations Art Spengler. "They are paying $9 a gallon for avgas and jet-A is available for $4 a gallon." With math like that, he said, "a flight school can't afford not to do the upgrade."