Which factor does NOT affect search during reconnaissance?

The factor that does not affect search during reconnaissance is time of day. When conducting reconnaissance, the altitude of the aircraft, airspeed, and the terrain and meteorological conditions all play significant roles in determining the effectiveness and efficiency of the search.

Altitude can influence the visibility of target areas and the ability to gather detailed information. Higher altitudes may provide a broader view but with less detail, while lower altitudes may offer more detailed observations but can expose the aircraft to threats.

Airspeed also impacts reconnaissance operations; flying too fast might result in insufficient time to observe and identify key features, while slower speeds may allow for better observation but could increase vulnerability to enemy detection and engagement.

Terrain and meteorological conditions are critical as they directly affect the ability to see and identify targets, as well as the safety and maneuverability of the aircraft.

While time of day can influence visibility, the effects are often mitigated by tactics and training, making it less of a direct factor compared to the aforementioned considerations.