Quote:
Originally Posted by mojo6911  |
Just because there is 5000' of pavement doesn't necessarily mean that all 5000' of it is available in your take off calculations. See below.
Quote:
Originally Posted by jhugz Can you reference that for me? |
Quote:
Originally Posted by aevfo So you are saying that a 10-9 is not a legal source for t/o and landing distances? |
Take a look at Naples, FL (KAPF). Runway 14/32 to be specific. The 10-9 doesn't show anything about a limit to the runway distance for take off. Naturally, one would assume that all 5000' is available.
However, if you dig into the A/FD, you will find that the published ASDA (Accelerate-Stop Distance Available) for runway 14 is 4,550' and for runway 32 it is 4,870'. The limiting factor for take off performance calculations for Part 25 aircraft is the shortest of the Take Off Runway Available (TORA), Take Off Distance Available (TODA) or the ASDA.
Old standards required only a 200' Runway Safety Area (RSA) past the end of the runway. In keeping up with ICAO standards, the FAA now requires a minimum of 1000'. What that means is that if there is an obstacle 500' off the end of a 5000' runway, your ASDA is reduced to 4,500'. Again, you can't find this information anywhere other than the A/FD.