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2.4 Aerodrome reference temperature
2.4.1 An aerodrome reference temperature shall be determined
for an aerodrome in degrees Celsius.
2.4.2 Recommendation.- The aerodrome reference temperature
should be the monthly mean of the daily maximum
temperatures for the hottest month of the year (the hottest month
being that which has the highest monthly mean temperature).
This temperature should be averaged over a period of years.
2.5 Aerodrome dimensions and
related information
2.5.1 The following data shall be measured or described,
as appropriate, for each facility provided on an aerodrome:
a) runway - true bearing to one-hundredth of a degree,
designation number, length, width, displaced threshold
location to the nearest metre or foot, slope, surface type,
type of runway and, for a precision approach runway
category I, the existence of an obstacle free zone when
provided;
b) strip
runway end safety area length, width to the nearest
stopway t metre or foot, surface type;
c) taxiway - designation, width, surface type;
d) apron - surface type, aircraft stands;
e) the boundaries of the air traffic control service;
f) clearway - length to the nearest metre or foot, ground
profile;
g) visual aids for approach procedures, marking and lighting
of runways, taxiways and aprons, other visual guidance
and control aids on taxiways and aprons, including taxiholding
positions and stopbars, and location and type of
visual docking guidance systems;
h) location and radio frequency of any VOR aerodrome
check-point;
i) location and designation of standard taxi-routes; and
j) distances to the nearest metre or foot of localizer and
glide path elements comprising an instrument landing
system (ILS) or azimuth and elevation antenna of
microwave landing system (MLS) in relation to the
associated runway extremities.
2.5.2 The geographical coordinates of each threshold shall
be measured and reported to the aeronautical information
services authority in degrees, minutes, seconds and hundredths
of seconds.
2.5.3 The geographical coordinates of appropriate taxiway
centre line points shall be measured and reported to the
aeronautical information services authority in degrees, minutes,
seconds and hundredths of seconds.
2.5.4 The geographical coordinates of each aircraft stand
shall be measured and reported to the aeronautical information
services authority in degrees, minutes, seconds and hundredths
of seconds.
2.5.5 The geographical coordinates of obstacles in Area 2
(the part within the aerodrome boundary) and in Area 3 shall
be measured and reported to the aeronautical information
services authority in degrees, minutes, seconds and tenths of
seconds. In addition, the top elevation, type, marking and
lighting (if any) of obstacles shall be reported to the
aeronautical information services authority.
Note 1.- See Annex 15. Appendix 8, for graphical
illustrations of obstacle data collection sur$aces and criteria
used to identifl obstacles in Areas 2 and 3.
Note 2.- Appendix 5 provides requirements for obstacle
data determination in Areas 2 and 3.
Note 3.- Implementation of Annex 15 provision 10.6.1.2
concerning the availability, as of 18 November 2010, of
obstacle data according to Area 2 and Area 3 specifications
would'be facilitated by appropriate advanced planning for the
collection and processing of such data.
Chapter 2
2.6 Strength of pavements
2.6.1 The bearing strength of a pavement shall be
determined.
2.6.2 The bearing strength of a pavement intended for
aircraft of apron (ramp) mass greater than 5 700 kg shall be
made available using the aircraft classification number -
pavement classification number (ACN-PCN) method by
reporting all of the following information:
a) the pavement classification number (PCN);
b) pavement type for ACN-PCN determination;
c) subgrade strength category;
d) maximum allowable tire pressure category or maximum
allowable tire pressure value; and
e) evaluation method.
Note.- Ifnecessary, PCNs may bepublished to an accuracy
of one-tenth of a whole number.
2.6.3 The pavement classification number (PCN) reported
shall indicate that an aircraft with an aircraft classification
number (ACN) equal to or less than the reported PCN can
operate on the pavement subject to any limitation on the tire
pressure, or aircraft all-up mass for specified aircraft type(s).
Note.- Dlferent PCNs may be reported $the strength of the
pavement is subject to significant seasonal variation.
2.6.4 The ACN of an aircraft shall be determined in
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