On Mar 1, 11:25*pm, Mxsmanic wrote:
a writes:
I would point out controllers get a large number of airplanes to land
safely. All they do is *provide seperation so the pilots can land the
airplanes safely.
Not
Before they did that, some pilots never got the opportunity to land.

Seventy years ago, just flying into clouds could spell the end of a commercial
flight.

The no visual reverence problem was solved by Sperry eighty years ago.

Cheers