We aim to fly when the weather is at its best and when we have obtained an Air Traffic Control (ATC) clearance. However, sometimes we might start a flight in the best conditions but be unable to finish the flight because these conditions have changed. For example, we might obtain a clearance from ATC to fly a certain area but then they might change their minds because there is heavy traffic and they can't let us continue. In this case, we will have to abort the flight. Alternatively, unexpected clouds might start to creep in mid-flight. In this case we will make the decision whether to abort or continue based on how much of the survey is left and how heavy the cloud cover is.
If we do have to abort a flight, we will make it a high priority to fly the area again at the earliest time possible, when the conditions are in our favour.