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Special air-reports are not transmitted to WAFCs but are used at the aerodrome where they are
received.
Forecasts for take-off are not prepared. TREND forecasts are used for the take-off and landing of
aircraft.
SIGMET messages for volcanic ash cloud are not issued.
Notification concerning significant discrepancies are not sent to WAFCs. Amendments to
forecasts are carried out by the meteorological offices, once they have received information on the
discrepancies.
* Recommended Practice
APPENDIX 3
2.3.1 c) Local special reports concerning an increase in temperature are not issued.
2.3.2* e) SPEC1 is not issued if the visibility reaches or exceeds the values of 3 000 m and 5 000 m.
i) SPEC1 is not issued if the height of base of the lowest cloud layer reaches or exceeds the value of
450 m.
4.2.3* When instrumented systems are used for the measurement of visibility, their output is updated
every 60 seconds for ICAO Category II operations; for other cases, their output is updated based
on METAR and SPECI modes.
4.3.4 When instrumented systems are used for the assessment of runway visual range, their output is
updated every 60 seconds for ICAO Category II operations; for other cases, their output is updated
based on METAR and SPECI modes.
4.3.6.5* When instrumented systems are used for the assessment of runway visual range, the following are
included in METAR and SPECI:
- if the runway length is less than 2 000 m, the minimum of two values, at the start and end of
the runway;
- if the runway length is greater than 2 000 m, the minimum of two values, at the start and
middle of the runway.
* Recommended Practice
15/6/05
CHAPTER 1
Definitions The following definitions apply:
Flight crew member. A crew member assigned by an operator in an aircraft during flight time as a
pilot or flight engineer.
Remark: CAR Part 1.
Pilot-in-command. In relation to any aircraft, it means the pilot responsible for the operation and
safety of the aircraft.
Remark: CAR Part 1.
Visibility. The ability, as determined by atmospheric conditions and expressed in units of
measurement, to see and identify prominent unlighted objects by day and prominent lighted
objects by night.
Remark: CAR Part 1.
CHAPTER 3
3.4.2 g) Information on the accidental release of radioactive materials into the atmosphere is not available.
CHAPTER 4
4.1.6* Automated equipment is not available for measuring surface wind at Aneityum, Lamap or Sola.
Automated equipment is not available at any station for measuring runway visual range or cloud
height.
4.3.1 Reports of routine observations are identified as SPEC1 reports when the observed conditions meet
the criteria used for special observations.
4.6.3 Runway visual range is not reported.
4.6.5.1 Vertical visibility is not available.
4.6.5.2* Cloud observations are only representative of the aerodrome and its immediate vicinity.
CHAPTER 6
6.6.1 Area forecasts for low-level flights are issued in a plain language form.
CHAPTER 7
7.4 Wind shear warnings are not issued.
* Recommended Practice
CHAPTER 9
General The type, the format and the means and the point of supply of meteorological information to
operators and flight crew members are as agreed between the 'keteoro~o~icsaelr vice provider and
the operator or flight crew member.
APPENDIX 3
2.3.2* e) The following criteria are used for horizontal visibility:
800,1500,3 000,5 000 and 8 000 m.
f) No SPEC1 issued based on RVR instrumentation which is not available for measurement of
runway visual range.
i) The following criteria are used for the height of the base of the lowest cloud layer or mass of BKN
or OVC extent:
200,500,1000 and 1 500 ft.
k) No SPEC1 issued based on vertical visibility.
APPENDIX 5
1.2.4* Vertical visibility forecasts are not available.
1.3.1* b) The following criteria are used for visibility:
800,l 500,3 000,5 000 and 8 000 m
e) The following criteria are used for the height of the base of the lowest cloud layer or mass of BKN
or OVC extent:
200,500,l 000 and 1 500 ft.
h) Vertical visibility forecasts are not available.
2.2.3 The following criteria are used for visibility:
800, 1 500,3 000,s 000 and 8 000 m.
2.2.5 The following criteria are used for the height of the base of the lowest cloud layer or mass of BKN
or OVC extent:
200,500,l 000 and 1 500 ft.
2.2.6 Vertical visibility forecasts are not available.
* Recommended Practice
Wind shear warnings are not issued.
ASHTAMs are not issued.
SUPPLEMETNOT A NNEX3 (FIFTEENTEHD ITION) VANUATU3
APPENDIX 9
1.1 b)
3.1 b)
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