In a pilot's logbook, the term "Dual" (often labeled as "Dual Received") refers to flight time during which the pilot is receiving active flight instruction from a certified flight instructor (CFI). This is a foundational category for student pilots, as nearly every hour flown before earning a private pilot certificate is logged as dual time. Even after obtaining a license, pilots continue to log dual time when training for advanced ratings, such as an Instrument Rating or Commercial Certificate, or when completing a mandatory Flight Review. From a regulatory standpoint, dual time is distinct from "Solo" time (where the pilot is the sole occupant) or "Pilot-in-Command" (PIC) time. However, once a pilot is licensed, they can often log a flight as both "Dual" and "PIC" simultaneously if they are the sole manipulator of the controls while receiving instruction. For those pursuing professional aviation careers, the "Dual Received" column is closely scrutinized by airlines to ensure the candidate has met specific instructional requirements, but it also serves as a record of continuous learning and mentorship throughout a pilot's career.