Though the literal power band covers most of the operating RPM range, particularly in first gear (as there is no lower gear to shift down to, and no «flat spot» in which the engine does not produce any power), the
effective band changes in each gear, becoming the range
limited at the
upper end by either the limiter, or a point roughly located between peak power and the redline where power drops off, and at the lower end the engine's idling speed.
There is no
upper age
limit on apprenticeships; they're a cost
effective way for people of all ages to get the necessary skills to excel in their field of choice, whether they're fresh out of education or older and looking to retrain.