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sufficiently trustworthy, upper wind air temperature charts for FL 020 will be supplied in 2005.
CHAPTER 2
2.1.5 Meteorological observations and reports are provided by employees or contractors of air
navigation service providers. These personnel may not fully meet the prerequisite knowledge and
training qualifications specified by the World Meteorological Organization for meteorological
personnel. The service provider must, however, demonstrate to the State meteorological authority
that observer personnel are competent to make aviation weather observations accurately to
WMO/ICAO specifications and to code the resulting reports accurately and within the time
allotted.
CHAPTER 4
4.1.3 1) SPECI is not issued upon changes in RVR.
2) SPECI is not issued upon changes in temperature although compliance will be implemented by
1 July 2005 at designated international aerodromes with human METAR and SPECI
programmes.
Real time wind, QNH and RVR information is available. Updated information related to the
current aerodrome representative values of the other weather elements is available upon request.
Most aerodromes in Canada are operational at all times. The hours of METARISPECI are
determined individually for each aerodrome in consultation with users.
Canada does not include temperature, dew point or QNH in SPECI except from automated sites.
RVR is not included in the METAR or SPECI at many aerodromes including Toronto (Pearson)
and Vancouver International. Efforts to enter into compliance for RVR are ongoing; however, an
implementation date cannot be determined at this time.
4.6.2.1 Canada reports visibility in units of statute miles (SM) and fractions.
4.6.3.3 Canada reports RVR in units of feet (ft).
4.6.7 Canada reports altimeter settings in units of hundredths of inches of mercury. QFE is not available.
CHAPTER 6
6.2.3 Canada includes a remark at the end of each TAF preceded by "RMK" and followed by the
scheduled issue time of the next regular TAF in plain English. For TAFs based on automated
weather observation systems, the additional remark "FCST BASED ON AUTO OBS" will be
included, along with appropriate remarks in abbreviated plain English, as necessary, to indicate if
automated sensors are providing non-representative information.
Take-off forecasts are not provided.
2 CANADA SUPPLEMENTT O ANNEX3 (FIFTEENTH EDITION)
CHAPTER 7
AIRMETs are not routinely issued and do not include the location indicator of the air traffic
services unit or the name of the flight information region or control area to which they correspond.
Normally, they are only issued to amend or correct information in the graphic area forecast (GFA).
7.3.1 Aerodrome warnings are not issued.
Wind shear warnings are not issued. A wind shear group is included in the TAF when significant
wind shear is observed or forecast.
Remark: The wind shear group in the TAF consists of WS hhh/dddffKT where:
- WS indicates the start of the wind shear group;
- hhh is the height of the wind shear layer in hundreds of feet;
- ddd is the direction of the wind at level hhh; and
- ffKT is the wind speed in knots (kt) at level hhh.
If the wind speed is 100 kt or greater than a three-figure wind speed group, fff is used.
CHAPTER 9
9.4.3 Updated information is provided whenever practicable to do so. However, in Canada, it is the
responsibility of the pilot-in-command, before commencing a flight, to ensure familiarity with all
necessary weather information that is appropriate for the intended flight.
9.4.6 The information is retained by the meteorological service providers.
APPENDIX 3
RVR is not included and most SPEC1 do not include temperature, dew point or altimeter setting
except from automated sites.
2.2 The use of the term CAVOK is not permited in METARISPECI.
2.3.1 d) Information contained in SPEC1 are representative of the aerodrome and climb-out areas.
3.2 Local routine and special reports are not issued.
4.1.3.1 b) Wind averaging period for METARISPECI is 2 minutes.
4.1.4.2 d) Winds of less than 2 kt mean speed are reported as calm.
4.2.4 Visibility reports are provided in units of statute miles (SM) and fractions.
4.3.3.1 RVR is automatically inserted within METARISPECI without need for human intervention at
some sites. RVR displays are in the air traffic services unit and do not typically exist in the
meteorological station.
4.3.6.1 RVR is reported in units of feet (ft).
4.7.3.1 Altimeter setting is reported in units of hundredths of inches of mercury and is preceded by an "A"
designator.
Table A3-2 The identification of correction to METARISPECI is indicated by the use of the code CCX, rather
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