The Sr71 on display at The Duxford Museum also has these indentations, so
that's three now. or Common as muck as we would say on our side of the pond.
"Morgans" wrote in message
...

"Dr.Smith" wrote

I just dug this one out of an old file. The SR-71 at Barksdale AFB in
Louisiana has the same indentions.

Interesting. I had never seen even one with that modification. Now
suddenly there are two!
--
Jim in NC