What should be done if the minimum control speed is not achieved during takeoff?

If the minimum control speed (Vmc) is not achieved during takeoff, aborting the takeoff is the appropriate course of action. Minimum control speed is critically important because it represents the lowest speed at which the aircraft can maintain controlled flight in the event of an engine failure. If Vmc is not reached, the risk of losing control of the aircraft increases significantly.

Continuing with the takeoff in this situation could lead to dangerous outcomes, as the aircraft may not have sufficient speed or control authority to handle an engine failure. Other options, such as increasing thrust, leveling off, or continuing to climb, are not safe practices under these circumstances. Therefore, recognizing that Vmc has not been achieved prompts an immediate decision to abort the takeoff to ensure safety.