In a turn, to prevent a loss of altitude during entry, which action is necessary?

Applying appropriate back pressure during a turn is crucial for maintaining altitude. When an aircraft enters a turn, the lift vector is tilted, resulting in a reduction of vertical lift. If the pilot does not counteract this effect, the aircraft will start to lose altitude. By applying back pressure on the yoke or control stick, the pilot can increase the angle of attack, thereby augmenting the lift generated by the wings. This helps sustain altitude throughout the turn by compensating for the loss of vertical lift due to the bank angle.

Adjusting the bank angle, increasing altitude immediately, or leveling off before entering the turn do not directly address the need to maintain altitude during the turn itself. Instead, they may be more reactive solutions rather than proactive measures that maintain consistent altitude during the maneuver. Therefore, applying appropriate back pressure is the most effective technique to ensure altitude is preserved during the entry into a turn.