Rating Newest Oldest. Best Answer: Once muscle contraction starts the regeneration of ATP must occur rapidly. There are three primary sources of ATP which, in order of their utilization, are creatine phosphate (CP), anaerobic glycolysis, and oxidative phosphorylation. Energy from ATP derives from cleaving of the terminal phosphate of the ATP molecule.
Under the new rules, pilots will be able to be on duty for nine to 14 hours â a number that will fluctuate based on factors such as when the pilotâs day begins and how many segments he or she will fly in one day. Pilots will be able to fly no more than nine hours during that period.
Congress has mandated changes to the requirement to fly as a co-pilot (first officer/second-in-command) in Part 121 airline operations. Currently, a commercially certificated pilot with 250 total hours could serve as a co-pilot. However, in response to the congressional mandate, the FAA has created new certification and qualification requirements for pilots in air carrier operations, expected to take effect in August 2013.