How should the visual reference appear during the rotation attitude at takeoff?

During the rotation attitude at takeoff, the correct reference is for the spinner to be on or slightly below the horizon. This position indicates that the aircraft is at the appropriate pitch angle necessary for taking off. Rotating the aircraft to this attitude allows for optimal lift generation and helps maintain control during this critical phase of flight.

Positioning the spinner at this level aids the pilot in understanding that they have achieved the correct angle during the rotation and that the aircraft is transitioning from the ground to becoming airborne. If the spinner were above the horizon, it may indicate a nose-up attitude that could lead to a stall. If the spinner were significantly below the horizon, it could suggest an undesirably nose-down position that might delay rotation or result in increased speed without gaining the necessary lift.

This visual reference is a key aspect of effective takeoff procedures and is crucial for maintaining safety and performance during the initial phase of the flight.