What is the first of the five Ts when entering a hold?

The first of the five Ts when entering a hold is "Turn." This is established in standard holding procedures where, upon reaching the designated hold fix, the pilot begins by initiating a turn in the appropriate direction. This is part of the process to correctly enter the hold pattern, which typically involves a standard turn to the right or left based on the directions given in the approach or flight plan.

Understanding this process is essential for maintaining the correct entry into the holding pattern, ensuring that the aircraft remains in the appropriate airspace and follows the published holding design. The subsequent steps in the five Ts—Throttle, Time, Talk, and Twist—are executed after the initial turn, emphasizing the systematic approach pilots must take to effectively manage holding patterns during flight, particularly in instrument meteorological conditions (IMC).