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.
In 2014, the average annual salary for a medical helicopter pilot was $82,000, according to Indeed. The U.S. Bureau of Labor Statistics reports that pilots who flew for ambulatory health care services, including those who piloted airplanes, earned an average $71,370 a year in 2013. The average salary for all types of commercial pilots in 2013 was $80,800 a year.