Hi Simmers,

Hope you are enjoying flying all around.

I just thought I'd take you all back to the 60's when we had to do everything without computers and calculators.  We used slide rules to make calculations.  We used an E6B to navigate and low frequency navigation radios on the ocean.  We had Doppler navigation which sometimes would not work if the sea was smooth.  When the 747 started flying in the early 70's it had INS which only had the ability to store 10 way points.  You had to be real careful adding new way points. Then the early GPS was available and for a short time we had Omega Navigation which was low frequency sort of what a submarine used.  Then we got IRS and computers and still had to carry all the heavy charts and maps.  Now, the tablet and wide screen displays...  Life is good!

I still loved flying the 757! 

Stay well and have fun flying.

Lou