A UCSD aerospace structures student pilot gets the opportunity to serve as a co-pilot on a 3-hour private experimental racing aircraft flight from San Diego to the National Championship Air Races in Reno, Nevada. This aircraft can typically go 350 flights between fatigue inspections. The main wing aluminum spar experiences one high-stress (100 MPa) cycle at take-off. During the cruise portion of this flight, the spar experiences 21,081 load cycles at 80 MPa, 119 load cycles at 90 MPa, and 1,130 load cycles at 95 MPa. The pilot was so impressed with the UCSD student co-pilot that he gave the student permission to land the airplane at the Reno airport. A bone-shaking hard landing was observed and the main spar experienced one high-stress cycle at 290 MPa. Calculate the amount of aircraft life that is used up during this single flight. Express your answer in terms of percent of life used (%). As a side story, the student looks through the flight log and sees that there are at least 16 past flights of UCSD student co-pilots performing similar hard landings. The owner has not performed a fatigue inspection. The current UCSD student wonders if he should fly back to