Treasure Coast Newspapers ST. LUCIE COUNTY — Frank Webster said the Tuesday morning flight out of Treasure Coast International Airport and Business Park in his single-engine plane was supposed to be a leisurely one. Webster, 77, said he tries to pilot the fixed wing 2007 Jabiru aircraft an hour a week. “I was out there, just having a good time,” Webster said Thursday. “I wasn't working on any maneuvers or anything, and all of a sudden the engine started running a little rough.” It wouldn’t be long before the plane would be in a canal north of Florida’s Turnpike and east of Minute Maid Road, and Webster would be making his way out of chest-deep water.