Answer:
Due to its circular path.
Step-by-step explanation:
A racetrack could be a serious problem for the pilots because the racetrack has circular structure not straight which made a big problem for the pilots. for landing of a plane the pilots needs a straight path but the racetrack has circular path which makes a serious problem for the pilots. In the Gimli base, there had no control tower or fire trucks so the pilots used racetrack for landing which was very dangerous.