Originally Posted by JohnBurke

That you don't understand the concept speaks volumes. As you've failed to contribute to the thread even once, it's clear you're dead weight. No further conversation with you.



A vast improvement.

A deviation entered the practical test because while it's such a mindless and simple thing to do, in todays cockpits, students were struggling with anything that took them off the magenta line. Prior to reducing cockpit skill to worship of the magenta line, one was expected to know where one was all the time, such that diversion options were always part of situational awareness...every bit as much as already having a forced landing site picked out when flying A to B. It's basic airmanship.

The irony is that in advanced cockpits, which today is anything with a handheld GPS on up, diversion is as dirt-simple as hitting the nearest button. One should have already made the diversion planning before ever departing, however, and should already know the options that are only confirmed by double checking weather and then diverting. These are not issues with which one needs to struggle enroute. 14 CFR 91.103(a) demands that the PIC become familiar with this information before the flight.

There are simple rules of thumb or ways to make quick determinations enroute, however, and these have been presented, thus contributing early to the thread.

Some have entered here with absolutely zero to contribute, and continue to do just that.