Pro Star Aviation, Londonderry, N.H., said it is “in the final stages of STC certification” for installation of a single Universal Avionics UNS-1Fw or UNS-1Lw WAAS-capable flight management system (FMS) and a Universal Avionics LP/LPV Monitor in Sikorsky S-76B and C model helicopters.

The WAAS enabled FMS allows the helicopter to fly Localizer Performance with Vertical guidance (LPV) approaches. Final certification is expected in March, the company said.

“We’re pleased to have developed a low-cost option for Sikorsky operators looking for WAAS approach solutions,” said Kevin Harriman, Pro Star Aviation general manager. “This should completely change the dimension of Sikorsky S-76 flight operations in the future.”