Mutt:
I guess I am lucky that the Jepp runway analysis manuals we use take into account the factors you mention. We have limits for tire speed and brake energy already in the tables, and if contamination is present no flex takeoff procedure. The runway limit data includes the slope. We have data for each runway at each airport, with winds, slope, weight, certification basis, brake energy (in MJ), aircraft and engine models, and runway conditions, aircraft configuration to mention a few, this takes the guess work out of the "gray area".
If you don’t have these available to you it is the airline depriving you of data that already exists to save a dollar.
If you are concerned about runway conditions for stopping, brief for a TOGA takeoff not FLEX/Reduced Temp.
What I don’t see anywhere which I this would be of great benefit to pilot is at V1-what can you takeoff on one engine ? In the sim I have played around with engine failures at V1-10 kts came close to a tale scrape but got the aircraft airborne.
The reason why I think this would be useful is if you were say V1-5 and had an engine failure, contaminated runway (say low friction due ice) I know I can get airborne safely and come back and do and ILS/autoland on one engine with autobrakes even if the vis was 150/0. The hardest part about continuing the takeoff is changing the destination and reprogramming the approach in the FMC.
Getting airborne give you more options (runways/airports/conditions) than the single option if you are rejecting.
GotTheTshirt,
The NTSB did a large study on RTO's and the cause of them, and recommended a number of recommendations were adopted by the FAA and JAA.
The DC10 incident you refer to would not be relevant today as one of the changes in 1988 to the FARs and JARs was to have the RTO performance figures for fully worn brakes for all aircraft (what temp are the brakes assumed to be at the start of the takeoff roll ?). A number of other factors which may make the aircraft or runway less than ideal have been included.
If one were to ask most of the guys the finer points of what is and is not taken into account for RTO they do not have an idea. Most of the guys I see just get the runway analysis book out to takeoff card for the weight and read the figures out, not understanding the factors that were included in the computer analysis derived performance figures.
Z