What is the rule of thumb for leading a descent level-off by?

• A. 0 ft lead
• B. 50-75 ft and add power
• C. 200 ft and maintain altitude
• D. 100-150 ft and add power

Answer: (D)

When descending to a specific altitude, start the level-off slightly before you reach that altitude rather than right on it. The rule of thumb is to lead by about 100 to 150 feet. This allows you to bleed off the descent rate smoothly and transition to level flight without overshooting due to momentum. As you reach the lead point, gently pull back just enough to arrest the descent and simultaneously add a touch of power to maintain the desired airspeed. This combination keeps the aircraft stable at the target altitude once level, rather than settling into a descent or climbing away. A zero lead is too optimistic and risky for overshooting; too small a lead is still vulnerable to overshoot, while a slightly larger lead (around 100–150 feet) gives a smoother, controlled transition.