What technique should be used for effective daytime scanning while flying?

The technique utilizing short, regularly spaced intervals not to exceed 10 degrees for at least 1 second is effective for daytime scanning because it optimizes visual attention and situational awareness. This method allows pilots to maintain a comprehensive view of their surroundings while ensuring that no area is overlooked. By breaking down the visual field into smaller sectors, a pilot can efficiently scan for potential hazards, other aircraft, and significant landmarks without experiencing sensory overload.

This scanning technique promotes a systematic approach that enhances the pilot's ability to detect and respond to changing conditions promptly. It also helps avoid fixation on a single point, which can occur during longer, more focused glances, thereby increasing the likelihood of missing critical information nearby.

By contrast, continuous scanning is less effective in identifying specific threats because it may cause the pilot to overlook details in favor of a broader but less attentive search. Long, focused glances at distant landmarks may provide situational context but can detract from the immediate vigilance required for spatial awareness. Finally, scanning only during level flight neglects the critical conditions that can arise during climbs, descents, and turns, which can greatly affect safety and navigation. The preferred technique offers a balanced approach that contributes to better overall situational awareness and flight safety.