What is the impact of rain on an aircraft approach?

Rain can significantly affect an aircraft's approach primarily by decreasing visibility for the pilot. When rain falls, it can create a layer of moisture on the windshields, leading to reduced clarity. This reduction in visibility can make it challenging for pilots to see both the runway and other traffic in the vicinity. The intensity of the rain is also a crucial factor; heavy rain can obscure critical visual cues that pilots rely on during landing, such as markings on the runway or approach lights.

In addition to affecting visibility, rain can impact the performance of the aircraft itself; for example, it may cause hydroplaning on the runway. Therefore, when dealing with rain during an approach, pilots must be extra vigilant, prepared for potential go-arounds if conditions do not meet the required minimums, and adjust their flying techniques accordingly.

The other options do not accurately represent the effects of rain on an aircraft's approach. The misconception about perceived altitude or improved visibility does not hold true during rainy conditions, and it is certainly not correct to state there is no impact at all. The combined effects of rain on visibility, aircraft handling, and passenger comfort underscore the importance of recognizing and responding to these weather conditions during flight operations.