Aerodrome and Weather Information Broadcasts (AWIB)

• 3.4.3 An AWIB is an automated broadcast on a specified frequency at some unattended aerodromes. It relays information on meteorological and operational conditions that are obtained from automatic sensors and manual observations.
• 3.4.4 An AWIB is not provided by an air traffic service and is therefore not required to have the same standard of accuracy as an ATIS does.
• 3.4.5 The following information (which may be obtained from automatic sensors, manual observations, or a combination of both, and may vary with location) may be broadcast by an AWIB:
  • (a) Preferred runway-in-use;
  • (b) Other operational information;
  • (c) Wind direction and strength;
  • (d) Visibility;
  • (e) Cloud cover;
  • (f) Temperature;
  • (g) QNH (if from a CAR Part 174 certificated source) or mean sea level pressure.
• 3.4.6 Pilots should note that MET information may not necessarily be representative of the conditions in the vicinity of the runway because of the siting of the AWS and the area of scan.
• 3.4.7 Frequencies and hours of operation for AWIB are provided in Table GEN 3.7-1.