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.
Location: Frontal and upper area of the cortex. Function: Carries out higher mental processes such as thinking, decision making, and planning. You use your frontal lobe nearly everyday. You use it to make decisions, such as what to eat or drink for breakfast in the morning, as well as for thinking or studying for a test. The frontal lobe is also where our personality is formed and where we can carry out higher mental processes such as planning. In addition, the frontal lobe is necessary to being able to speak fluently (without fault) and meaningfully.