S-Tec introduced a version of its HeliSAS helicopter stability augmentation system and autopilot for the Robinson R44 series, bringing big-helicopter capability to the piston rotorcraft market for the first time.
The system’s two-axis autopilot provides heading and nav hold as well as vertical speed and altitude hold modes. HeliSAS provides attitude stabilization and force feel features that improve handling and mitigate inadvertent cyclic control inputs that could result in dangerous attitudes.
