"Steven P. McNicoll" wrote:

"Jeff Saylor" wrote in message
...

The strange thing is that they bothered removing the identifier that
had already been issued; there must have been a compelling reason
to make a change beyond the fact it didn't meet the criteria for a
new 3 letter.


I'm not sure I follow you. Many airports have had their identifiers changed
when they no longer met the criteria for the previous identifier. That
seems to be the case with Drummond Airport.

But my point is, what is the compelling reason to change now? Presumably the
criteria for three letter id's is somewhat strict because the availability of
three letters is pretty finite.

Some non collocated VORs have had their ID changed from the same as the nearby
airport (e.g. Williamsport, Pa), some have not (e.g. Manchester, Nh; Pottstown,
Pa). Perhaps the relatively recent K prefix for lower 48 airports has
rendered the changes unnecessary.

I wouldn't be surprised if KDRU shows up somewhere else in
the next few years.


I think that unlikely. Remember, the identifier for Drummond VOR is still
DRU, only the airport identifier was changed.

Maybe they needed it for 40N