Concorde into CNS? Wow. I never heard of that. Interesting.
Capt.Bloggs, thanks for the RNP Chart, its useful to see that RNP procedure in relation to the terrain. Wish it showed more spot heights though, the contouring isn't really detailed.
To those saying its wrong to go straight out to 11dme - look at the RNP chart.
RNAV Waypoint CS528 is at 10.6DME. So our EOSID turn point (11DME) is .7NM past that. The valley is at its widest point right there, and a RIGHT turn takes you away from the nearest terrain to your left (not straight into it as some here declare).
Yes, you are turning toward another area of high terrain, but considering you've been climbing for the last 11 miles (hopefully!) you should have gained sufficient altitude to clear the closest stuff, and its now a matter of keeping the speed down to make the turn as tight as possible (as the EOSID dictates).
The success of this whole manoeuver depends a lot on accurate tracking in the initial climb. If you lose #1 and allow yourself to drift left - you could hit something.
BeerBaron, remember again - this procedure is LIDO approved! So I presume it satisfies all the legalities concerning tracking error (the cone) and turn radii.
The other option of the early left turn - at the departure end of the runway - is what a lot of other carriers seem to use, and it overcomes the issue about what flap or EOAA to use in order to stay below the max speed for the right turn at 11DME, thereby also avoiding any requirement to limit take-off/landing weight to stay below the limit speed after clean up.