Chapter 21: Reporting and Forecasting

Question 1

Reporting standard for meteorology

What document?

Answer 1

ICAO annex 3

Question 2

WMO

What is, functions (2)

Answer 2

World Meteorological Organisation
Provides aeronautical sector with meteo information
Reviews meteorological service requirements with ICAO

Question 3

WAFS

What is, function, components (6)

Answer 3

World Area Forecast System
Provides global aeronautical meteo. en-route forecast

World area forecast centers
Aerodrome meteorological offices
Meteorological watch offices
Aeronautical meteorological stations
Volcanic ash advisory centers (VAAC)
Tropical cyclone advisory centers (TCAC)

Question 4

World Area Forecast Centers

Location (2), function (2)

Answer 4

UK + Washington
upper air forecasts
med / high level SIGWX

Question 5

Aerodrome Meteorological Offices

What operation level, functions (3)

Answer 5

State Organisations
aerodrome forecasts
regional briefing documents
aerodrome warnings

Question 6

1. Meteorological Watch Offices
2. Aeronautical Meteorological Stations
   Functions

Answer 6

1. Airmet, Sigmet

2. METARS

Question 7

Aerodrome Warnings

by who, for who, validity, numbering, what is reported

Answer 7

Aerodrome Meteorological Offices
for everyone
6hr validity
sequential
TRS > 34 kn > 10 min and anything but RA

Question 8

Windshear Warning

by who, for who, numbering, alert system

Answer 8

Meteorological Offices
for AC during app, TO, landing < 16 000’
sequential
Low level windshear alert systems (LLWAS) @ AD

Question 9

Windshear Alerts

What wind change reported, frequency?

Answer 9

Automatic windshear systems

15 kn head/tailwind change. Report every min