but my point was basically about Yogibaboo being happy to use the ACTUAL runway length as shown in the AFM, while others are applying fudge factors.
Now you made go in the cellar, getting the ole stuff out...
LDR at MLM/SL.
at 50° is 2880 ft
at 30° it is 2690ft
at 15° it is 2590ft
and at 0° we look at 2510 ft
Assuming he hits the deck with 2 pax/2 crew and a bit of luggage, a reasonal reserve of, say 800lbs,the A/C would weight aroung 9300lbs.
Then the numbers are:
2710 ft
2590 ft
2490 ft
2410 ft
Without pax/luggage and maybe 600lbs remaining we might look at a LDW of 8500lbs:
2560 ft
2450 ft
2360 ft
2280 ft
Getting out of there is poss at SL at (FAR/JAR 25 perfomance):
30° at 9500lbs
20° at 10100lbs
15° at 10200lbs
0° at 10500lbs
MTOM is 10700lbs
So, there is always a little margin. (not too much, granted, but...)
Given the fact that the airplane has one tire at each gear leg and one electrically operated tiny little brake pump (like al 5XX series Citations IIRC), there is always some tradeoff in safety or greater risk in these airplanes than in bigger ones (FAR25)
Having said that, I feel this difference in risk is not a big one and would personally operate into 2953ft of runway in CJ1 without thinking of myself of being a cowboy...I would explain the higher risk to the owner / pax before, so he/she could make her mind up and decide whether its worth it or not. IŽd also let them know that if there is too much of a crosswind or damp/wet runway I wouldnŽt go there.