Today's pilots must follow rules about alcohol consumption, but that wasn't the case in the early days of flying.
Irish aviator Lady Mary Heath took a swig of whisky before flying at an altitude of 20,000 feet in 1928. The first female commercial pilot in the UK, Heath became the first person to fly the 10,000-mile-trip from South Africa to London in 1928, according to the Irish Emigration Museum.
The rules about pilots consuming alcohol were less strict then. Today, on-duty pilots cannot have a blood alcohol level of 0.04 or higher or consume alcohol within eight hours of a flight, according to Cornell Law School's Legal Information Institute.