Also I also like the idea of there being less digital and more analogue - so many plot problems these days are solved by Google.
But if that's the case - how do they navigate?
Charts and navigation equipment, and eyeballs! Familiarity with the local area.
In early days of GPS navigation for small planes, there was an increase in controlled flight into terrain.
In other words, you were on a perfectly straight line between your takeoff point and destination, but ran straight into a hill or a mountain or a large radio tower because you didn't look at the aviation chart (or through the windshield in front of you) which would have warned you of the obstacle.
They upgraded GPS systems for planes to warn of obstacles...
Another concern is that if the atmospheric pressure changes as you travel.
The phrase is, "From high to low, look out below."
In other words, if a low pressure area moves in, typically associated with bad weather, then your plane's altimeter will think it is at a higher altitude (lower atmospheric pressure) than it actually is in comparison to local terrain, whose altitude in comparison to local sea level doesn't change, regardless of weather.