Nowhere near it.

Rung Sat area possibly, but I suspect we are up north.

We are up north.

PHU CAT...13.57N 109.1E.....OH if correct

It isn't Phu Cat.
You need to keep going north.

Near Duc Pho possibly.

Not particularly - further north.

Anything to do with Operation Double Eagle ?

No, not that I can see. Still head north.

On his way to a 5-day R&R in Tokyo.
https://aczygw.db.files.1drv.com/y4m...&cropmode=none

We must be close to Quang Tri.

Yes, you are very close now, but still no cigar.

Running short of ideas now. I assume we're south of the DMZ.

Ca Lu ?

err no - I've just found a pic of that, and I don't believe it's Khe Sanh.

Yes South of the DMZ, but further north than Quang Tri.

Mai Loc then...….

No, not Mai Loc - still further north.

But I can't find any between there and theDMZ.

You said it's on this map:

http://i68.tinypic.com/15riefq.jpg

Everything has gone apart from possibly 2 roads.
Runway was approx. ENE / WSW
You aren't very far away with Mai Loc & Quang Tri.

It is on that map.

But on that map it looks to be south of Mai Loc, however, if I go to Mai Loc on Google Maps - it is to the north of it. (hope that makes sense)

It is also named on the map I posted on the previous page.

Me thinks the map is only showing the rough positions rather than the actual positions.

The only one left is Dong Ha.