Khe Sanh Descents..
A few years ago, I was reading about the battle of Khe San, during the Vietnam war. I distinctly remember something called a "Khe Sanh" descent, whereby aircraft resupplying the besieged garrison made a tight, spiralling descent from directly above the landing strip, to avoid Viet Cong/NVA anti aircraft fire.
I believe they were quite large aircraft, C130s maybe. If such aircraft did make these approaches, how far out from the runway threshold would of they established themselves for finals? or did they effectively fly the aircraft so as to roll out of the final spiral virtually on the threshold, at the correct speed and flap settings?
The only thing I can think of is something similar to the constant aspect approach used for PFLs, but I am curious to know how they did it.
Yours
Cumulus.