Changed
- Helicopters stand out on the radar. Rotorcraft (ADS-B emitter category A7) now render as a distinct rotor-disc marker instead of the directional airplane chevron — so you can pick out helicopters at a glance. Because a hovering helicopter has no meaningful ground track, the marker is drawn heading-agnostic (it doesn't rotate). The radar legend gains a matching "Helicopter" key. Still altitude-colored like every other contact.