Recurrent training is a form of scheduled refresher training required of pilots on a regular basis. Any recurrent training occurs every few months, while other recurrent training occurs biannually, annually, or biennially. Training can take place in person, online, or in a mixture of both. Most types of recurrent instruction have a written and/or functional proficiency test.
The Federal Aviation Regulations (FARs) of the Federal Aviation Administration (FAA) discuss and govern the form, quantity, and frequency of mandatory recurrent training for both pilots and other crew members.