Which of the following IS NOT procedurally correct when conducting a level speed change (LSC)?

Which of the following IS NOT procedurally correct when conducting a level speed change (LSC)?

• A. Start in normal cruise on any numbered heading; reduce power to -31%; trim for deceleration and stabilize at 150 KIAS
• B. Reduce power (idle to -10%); trim for deceleration; when airspeed is below 150 KIAS, lower landing gear
• C. As the airspeed approaches 120 KIAS, adjust power to -31% to maintain 120 KIAS
• D. After stabilized in no flap configuration, lower the flaps to landing, immediately adjust power to -52% and stabilize at 120 KIAS in land flap configuration

Answer: (A)

The correct choice indicates a procedural misstep during a level speed change (LSC). Standard practice during an LSC begins with a consistent heading and trim adjustments to achieve stable speeds while managing power settings effectively. Starting in normal cruise on any numbered heading is acceptable. However, the next step to reduce power to -31% without adequately transitioning through the recommended power settings can lead to an inappropriate descent rate. This approach assumes an immediate power reduction without considering the need for gradual adjustments that help maintain control and stability in the aircraft's flight dynamics. Additionally, stabilizing at a specific speed—like 150 KIAS—requires setting an optimal power that correlates with the aircraft's current configuration and flight profile, rather than simply applying a percentage without context. This practice ensures a smoother and safer transition to lower speeds without risking airflow separation or other aerodynamic issues. In contrast, the other options reflect better procedural compliance by suggesting gradual changes in power settings and speed adjustments that are inherent to safe flight operations during an LSC.

The correct choice indicates a procedural misstep during a level speed change (LSC). Standard practice during an LSC begins with a consistent heading and trim adjustments to achieve stable speeds while managing power settings effectively.

Starting in normal cruise on any numbered heading is acceptable. However, the next step to reduce power to -31% without adequately transitioning through the recommended power settings can lead to an inappropriate descent rate. This approach assumes an immediate power reduction without considering the need for gradual adjustments that help maintain control and stability in the aircraft's flight dynamics.

Additionally, stabilizing at a specific speed—like 150 KIAS—requires setting an optimal power that correlates with the aircraft's current configuration and flight profile, rather than simply applying a percentage without context. This practice ensures a smoother and safer transition to lower speeds without risking airflow separation or other aerodynamic issues.

In contrast, the other options reflect better procedural compliance by suggesting gradual changes in power settings and speed adjustments that are inherent to safe flight operations during an LSC.