The next phase of aerobic respiration is the Citric Acid Cycle, also known as the Kreb's Cycle, named for the biochemist who discovered it. To prepare for this stage, the pyruvate molecules from glycolysis are converted to a 2-carbon compound called Acetyl CoA.
Commercial pilots working in nonscheduled air transportation earned $78,010 on average in 2011, the bureau says. Those employed by technical schools and trade schools averaged $66,070, and workers providing support activities for air transportation earned $71,440.
This group excludes regional, national and international airline pilots. Commercial pilots earned a mean annual wage of $76,050 a year as of May 2011. The median reported salary was $70,000 per year, and the median-earning 50 percent of commercial pilots earned between $50,850 and $92,340 a year.