Now that our helicopter is in the air, let's get an idea of what is nearby. You may recall from Surface Tutorial 1.1 that the chief limitation on the range of surface-search radars is the radar horizon, and that as our radar receiver increases in altitude the range to the radar horizon increases.

Our helicopter has a maximum altitude of 13,000ft, which would result in a radar horizon of 161 nautical miles--however due to the cloud ceiling currently being at 2,000ft we will use this as our search altitude to allow our visual sensors to detect contacts and classify detected contacts. The radar horizon at 2,000ft is 63 nautical miles; a vast improvement over 12 nautical miles!

Turn on the helicopter's radar (F9) and climb to an altitude of 2,000ft.