7754 Vol 2 Flyleaf - ICAO Public Maps

III-I1
Attachment H
GUIDANCE ON THE ESTABLISHMENT OF
RUNWAY LENGTH REQUIREMENTS
(Column 8 of Table AOP 1 refers)
INTRODUCTION
1. The method (Guidance Material) presented below
is proposed in order to harmonize the statement of runway
length requirements submitted to the State of the aerodrome
in the context of the review of Column 8 of Table AOP 1.
2. To that effect, a set of standard assumptions that
are operationally sound and that can be used to calculate
runway length requirements, consistent among users, has
been drawn up and is presented below, under the following
sections:
Section A: calculation of take-off runway length for a
given weight;
Section B: calculation of take-off weight;
Section C: calculation of landing runway length.
3. It is understood that significant factors may cause
individual operators to have different requirements at any
one aerodrome but are thus reduced to:
a) aircraft type/engine type;
b) route length;
c) national regulations covering performance
requirements;
d) national regulations covering aircraft operations;
e) operator fuel reserve policy;
f) operator cruise technique;
g) operator estimates of aircraft weight during design
development.
represents a compromise among several methods designed
for use in calculating runway length requirements and will
differ from the methods used in operational planning.
Section A — Calculation of the required runway length
for a given take-off weight
5. In order that the users’ requirements may be
expressed in a clear and simple manner, operators should
make this calculation in accordance with normal operating
techniques (e.g. flap setting, bleed configuration, etc.) using
the methods outlined below:
a) Regulations governing take-off performance and
technique. Such regulations are normally taken into
account in the approved flight manual for the aircraft
concerned.
In the case of aircraft not yet certificated and for which
no approved flight manual is yet available, calculations
should be based upon estimated performance data
calculated in accordance with whatever regulations are
expected to be effective for the aircraft in question.
b) Source and accuracy of performance data
1) Use an approved flight manual when available, or
2) If no approved flight manual is available, use the
manufacturer’s latest estimated figures for the
minimum guaranteed performance. State date of
manufacturers’ data and per cent conservatism, if
any.
c) Runway slope. Assume level runway unless abnormal
slope conditions exist. State assumed slope if used.
4. It should be noted that this guidance material