Eye Coverage. Aviators, with their large, teardrop shaped lenses, give pilots' eyes more coverage than any other sunglasses thanks to their design covering the entire field of vision. As pilots fly at such high altitudes, the sunlight can also become unbearably bright, so pilots need all the protection they can get from all around. Pressure being retained on the outside temporarily between the earplug and ear drum would mitigate the effect. Emphatically yes, it is absolutely safe. Before the advent of noise canceling headsets, all of my Air Force flying was with foam earplugs. I never heard a single caution of any adverse risk, whatsoever. The pilot, who was not wearing a flight helmet, received severe head injuries during the impact sequence. The pilot's flight helmet was found inside its bag at the rear of the helicopter cabin. The occurrence pilot was not required by Campbell Helicopters to wear a helmet, nor is there a regulation requiring helicopter pilots to wear head 6nqnc1.

why do helicopter pilots wear helmets