Re-engined Plane Uses Williams FJ44-2A Turbofans

A new Sierra Stallion SP owned by Dr. Jack Vondrak will be the company's 50th aircraft, and 100th engine delivery, since the original FJ44 Eagle II STC was awarded to Sierra Industries in 2002.

"With multiple clinics in several widely separated southwestern cities, my practice demands fast, reliable long-range air travel," said Dr. Vondrak. "The amazing performance of the FJ44-powered Citation makes it possible to visit clinics in 3 or 4 different cities -- even in different states -- all in a single day!"

The Sierra Stallion modification adapts the Williams International FJ44-2A engine to the Citation 500/501SP airframe, dramatically enhancing overall performance and providing a cost-effective alternative to a brand new aircraft. The 2,300 lb. thrust engine provides numerous performance improvements, including a 25% reduction in fuel consumption, a 50-knot increase in maximum cruise speed, and a range increase of more than 250 nautical miles.

Featuring modern digital engine controls and full-time synching, the FJ44-powered aircraft is also easier to fly, while substantially reduced noise and vibration reduce pilot fatigue and airport noise pollution.

Sierra Industries and Williams International have worked together for more than a decade, beginning with the development of Sierra's Citation retrofit program in the late 1990's. Since the introduction of the Eagle II and Stallion programs, Sierra has established itself as an industry-leading provider of FJ44-powered Citation aircraft modifications.

FMI: www.sijet.com