Re: Runway length

[Paul Atkinson <Paul.Atkinson321@btopenworld.com>]

Just to complicate matters even more, hedges have an annoying habit of
growing. Round my way the council cut theirs in the autumn. Thus a nominal
6ft hedge could be 10ft high by October.
As for TORA I agree that it is a more important consideration than TODA.
Most field boundaries are marked by some kind of obstacle and one should
plan to clear it by a safe margin.How big the margin is is down to the
individual. I would suggest that standard 50ft is a bit excessive for our
purposes particularly if a safety factor is added to it for calculating
runway length

Paul Atkinson
 paul.atkinson321@btopenworld.com
> I agree with the comments so far on this subject. Be aware that as there
> are several factors, all of which can affect take-off run and some of
which
> can affect landing run. When some of these are added together in certain
> conditions it is possible to end up with with distances which are double
> the standard numbers. The CAA provide an excellent booklet giving
> recommended factors for this. Although they only give an approximate idea
> it provides a way of predicting whether the length available is
sufficient.
> Remember that the take-off distance available to 50ft (TODA)  can be more
> relevent than the take-off run available (TORA) if there are any trees or
> even hedges at the end of the runway.
>