THE DELIBERATE DISREGARD FOR THE FEDERAL AVIATION REGULATIONS, GP EXPRESS PROCEDURES, AND PRUDENT CONCERN FOR SAFETY BY THE TWO PILOTS IN THEIR DECISION TO EXECUTE AN AEROBATIC MANEUVER DURING A SCHEDULED CHECK RIDE FLIGHT, AND THE FAILURE OF GP EXPRESS MANAGEMENT TO ESTABLISH AND MAINTAIN A COMMITMENT TO INSTILL PROFESSIONALISM IN THEIR PILOTS CONSISTENT WITH THE HIGHEST LEVELS OF SAFETY NECESSARY FOR AN AIRLINE OPERATING SCHEDULED PASSENGER SERVICE.