Sandel Avionics received multi-model STC approval from the FAA for its helicopter terrain awareness and warning system, HeliTaws. The approved model list (AML) STC for Part 27 and Part 29 helicopters allows models to be added progressively by updating the AML listing, provided similarity and differences are substantiated. Sandel’s ST3400H Part 27 AML-STC covers the Airbus Helicopters AS350 series, while the Part 29 approval is for Bell 412s. It is working on adding the Bell 206 and 212 series, as well as the Airbus Helicopters EC130.