What effect does an increase in pressure altitude have on landing distance?

An increase in pressure altitude results in a reduction in air density, which significantly affects aircraft performance during landing. As air density decreases with higher altitude, the wings generate less lift at a given airspeed. Consequently, the aircraft requires a longer distance to achieve the same amount of lift necessary to become airborne again after touchdown, which directly correlates to landing distance.

Furthermore, the reduced air density affects engine performance, as they produce less power at elevated altitudes. This combination of factors contributes to longer landing distances because the aircraft may not be able to decelerate as efficiently or produce the same level of lift during the landing phase. Therefore, when pilots anticipate these conditions, they should account for the increased landing distance required at higher pressure altitudes to ensure a safe landing approach.