Even with a fast digesting protein such as whey, it can take hours for the leucine in whey to be liberated from the protein & enter circulation; therefore leucine concentrations in the plasma never spike to high levels.
Rating Newest Oldest. Best Answer: The absolute minimum age for flying alone on major airlines in 5 years old. Passengers who are ages 5-14 and are flying alone (without a companion who is at least 15 years of age) are considered Unaccompanied Minors (UM's). Passengers whose ages range from 15-17 are considered Young Adults and do not have to use the UM service, but can if they would like to.
In the US, the age 60 rule applies only to Part 121 airline pilots. Part 135 and other commercial operations have no age limits. That may change, but so far it hasn't. In fact, there is a movement to raise the age 60 limit for airline pilots. There is no evidence at all to support the limit from a safety standpoint.