You're right, I think. Non-native speakers trying to communicate over a bad audio channel is particularly difficult. Much better to stick to digits in those cir

You're right, I think. Non-native speakers trying to communicate over a bad audio channel is particularly difficult. Much better to stick to digits in those circumstances. (In aviation you can use letters, too, because you can rely on both parties knowing their Alfa Bravo Charlie. Unfortunately, that spelling alphabet is not taught to the general public.)