Surveillance information
ATS surveillance service (RAC 1.5.1): ATC uses radar and ADS-B tracking to shrink separation between aircraft and add flight information:
- Traffic information
- Navigation assistance
- Chaff drop or bird activity reports
Report contents (RAC 1.1.1):
| Report | Contents |
|---|---|
| Chaff drop | Area location; time of drop; estimated speed and direction of drift; altitudes likely affected; relative intensity |
| Bird activity | Species/size if known; location; direction of flight; altitude if known |
Limits:
- Secondary surveillance radar (SSR) alone, no primary radar: no traffic information on aircraft without transponders.
- ATC units covering larger airspace volumes may discontinue traffic information service without notification when workload or equipment limitations affect it (Class E, RAC 2.8.5; TC recency self-paced study program Q26).
References
- TC AIM RAC 1.5.1