Automatic dependent surveillance — broadcast (ADS-B). A means by which aircraft, aerodrome vehicles and other objects can automatically transmit and/or receive data such as identification, position and additional data, as appropriate, in a broadcast mode via a data link.
ICAO Annex 3
CHAPTER 5 AIRCRAFT OBSERVATIONS AND REPORTS
5.2 Types of aircraft observations
The following aircraft observations shall be made:
a) routine aircraft observations during en-route and climb-out phases of the flight; and
b) special and other non-routine aircraft observations during any phase of the flight.
5.3 Routine aircraft observations — designation
5.3.1 Recommendation.— When air-ground data link is used and automatic dependent surveillance — contract (ADS) or secondary surveillance radar (SSR) Mode S is being applied, automated routine observations should be made every 15 minutes during the en-route phase and every 30 seconds during the climb-out phase for the first 10 minutes of the flight.
Your Notes (not visible to others)
This question has appeared on the real examination, you can find the related countries below.