According to the AOPA the average age of single-engine general aviation aircraft in the U.S. is over 30 years old and is expected to continue increasing. One of the reasons aircraft age more gracefully than autos is the required maintenance. Aircraft are required to undergo an annual inspection by a licensed mechanic.
The inferior frontal gyri are located in the lower back portion of the frontal lobe on each side of the brain. Creativity depends on thinking skills that rely on the use of baseline knowledge combined with innovative thinking.
The biggest part of the brain is the cerebrum. The cerebrum makes  up 85% of the brain's weight, and it's easy to see why. The  cerebrum is the thinking part of the brain an â¦ d it controls your  voluntary muscles-the ones that move when you want them to.cientists do know for sure that the right half of the  cerebrum controls the left side of your body, and the left half  controls the right side   The cerebellum is the second largest part of the brain. It controls  muscle coordination, maintains normal muscle tone and posture, and  coordinates balance.