Is it true that all aircraft can land if the ground slope is between 8 and 15 degrees?

The assertion that all aircraft can land on ground slopes between 8 and 15 degrees is not accurate, which supports the selection of "False" as the correct answer. Not all aircraft are designed with the capacity to safely land and take off on steep gradients. The landing gear configuration, the aircraft's weight, and the specific performance capabilities all play significant roles in determining the feasibility of landing on sloped terrain.

Generally, certain types of aircraft, particularly those intended for rough or unimproved landing zones, may handle steeper slopes better than others. However, many other aircraft may struggle or be unable to land safely on such slopes due to their design limitations and performance requirements. Thus, while some aircraft might manage on a slope within that range, it's not a blanket capability across all aircraft, validating the claim that it is false.