Departing the Alliance Class D airspace, we dropped down and looked at the helicopter specific TAWS installation in the 407GX. Previously, when flying a helicopter low level, you just inhibited the terrain warning to avoid constant nuisance alerts. With the 407GX, there are three modes, OFF, normal, and a low-level mode that avoids most nuisance alerts while highlighting obstacles like towers on the PFD. The display of terrain, obstacles and traffic is amazing on the Garmin synthetic vision, and the targets grow as you approach the conflict. The 407GX is also equipped with Garmin’s new directional audio panel, that among other features, broadcasts a traffic alert from, for example, your right side through the right ear cup of your headset. A neat helicopter-specific feature is that you can push a button on the cyclic, and with voice commands do many things on the audio panel that previously required a free hand. Since two hands are often required to control a helicopter, the voice control feature is a major benefit.