[GH85Carrera]

My dad was commissioned into the Air Force on October 14th 1953, and became a pilot in Sept 1957. He talked about the navigation system that was fortunately for him in the process of being phased out. He only had to do limited training on a system when the pilot wears a headset and in one ear a beep tone and the other ear has a different beep tone, out of phase with the other ear.

If you were on course, the two tones matched up and became a solid tone, if you were off course the solid tone was became a beep and you knew to correct course. If not it was a constant beep beep.

Imagine trying to fly an airplane, and if all is going right you hear a solid tone in your head. He said it was almost torture after an hour. He was really happy to get away from that system.

We have a 2004 Cessna 182T that has the Garman G-1000 "glass cockpit" with two oversize iPads for the instruments. The factory autopilot is pretty amazing. After takeoff, and getting away from the airport, just punch in the rate you want to climb, the cruise altitude, and the airport designation, and it just climbs to the appropriate altitude at the rate of climb you gave it, and takes you right there. All updated every 30 days. That would be pure science fiction in 1957 for the USAF.