LeedsPilot
Active Member
- May 20, 2011
- 105
- 43
a300boy said:MAS737
I dont know if you are in the industry, but if not I would like to point out that the take off distance required has lot of corrections to be made to it. airfield altitude, temperature and obstacles have to be factored, so the numbers out of the book are only the starting point for your take off calculations and due to Lbia being 680 ft Amsl and having the chevin as an obstacle on ruway 32 our performance charts for an A300 show significant take off weight reductions. Then of course we have to deduct for high teperatures as well. Runway 14 would be much better as no obstructions to worry about however airfield altitude and temperature still have to be factored.
All take off calculations assume an engine failure after V1 (decision speed)
Apologies if you have knowledge of the subject but it would seem to me a B767 going transatlantic would be restricted unless runway 14 was in use.
No worries A300boy! I am knowledgable in the subject and understand that takeoff distance varies with a large range of factors (e.g. weight, altitude/air pressure, temperature, wind, runway slope, runway condition etc.) 5600ft is the takeoff weight for a Boeing 767-200ER at MTOW at sea level ISA+15 (30 degrees C temperature). In reality the actual takeoff distance from LBA would be close to 5600ft at MTOW as the altitude is higher but the temperature is lower so . Don't forget that the B762ER has a range of 6590nm so flights to the caribbean of ~3800nm shouldn't be a problem, nor should Florida (~3600nm). As you have rightly stated, runway 14 would be better for takeoff, but with the 767 the problem is actually worse for landing, where runway 14 with its steep 3.5 degree glidepath and shorter landing distance create potential risks.