Helicopter has partnered with BLR Aerospace to provide its  performance, safety and efficiency-enhancing FastFin® system as a  standard feature on new  SWFA UH-1 / SW204 / SW205 / SW205T aircraft orders. The system  incorporates two parallel stall strips along the tail boom and a  reshaped vertical fin. These modifications combine to optimize airflow  around the tail boom, improving the handling, stability and lifting  capacity of the  SWFA UH-1 / SW204 / SW205 / SW205T in all environments, especially high and hot  conditions.

The FastFin® system is a combination of two separate modifications,  one to the vertical fin and the other to the tailboom. For clarity, the  term FastFin® refers to the BLR modification that changes the shape  and contour of the vertical fin. The term FastFin® System refers to the  combined FastFin® and Dual Tail Boom Strake installation.