routine operation...taking bank checks to and from nutty little airports in the California foothills...cross huge damn below the level of surrounding mountains and clouds, fly over reservoir below cloud cover marginal VFR would be a good day, follow river to outcropping of rocks, PULL UP, then GEAR DOWN and if you were lucky you saw a runway and landed
if not, well, that's why commercial pilots learn chandelles, and they do work VMC or IMC.
especially tough when all air traffic controllers had been fired.
navigation? oh, an AM radio station somewhere and when you crossed the 350'bearing to station, you knew it was somewhere nearby(airport).
GPS...hey great. that was a long time ago.
and then there were RNAV apchs to truckee, california...runway in sight...but only the first 75 feet...whew