Well, it was a long time ago but I was based at JFK when a PanAm 747 diverted from JFK to EWR one night. Two engines flamed out after landing and I think he only had one running when he got to the gate.
The problem was that his Plog only showed the straight line distance from JFK and EWR which was about 27 nms. In actual fact, by the time you got out of the JFK traffic pattern into the EWR traffic pattern was probably in excess of 100 nms.
Not one of the PanAm crew had picked up on this shortfall.
That's how the FAA dealt with the problem in those days.
I did not ever have to get close to that problem for we had told our Plog provider never to accept an alternate closer than 150 nms.