Maintenance and Modifications
Sierra Partners with Clifford on FJ44-4 Retrofits

Sierra Industries and Clifford Development have formed a joint venture called NewJETz to develop a Williams International FJ44-4 engine retrofit program. The 3,600-pound-thrust engine retrofit will power legacy Cessna Citation 550 and 560 series jets, including the Citation V, Bravo, Ultra and Encore. The new modification is called eVolution, and NewJETz will also offer owners of these aircraft avionics and other upgrades.

The same engine is being used for the Hawker 400XPr retrofit program, which is a joint venture between Sierra and Hawker Beechcraft. In fact, Sierra brought the 400XPr development aircraft to the NBAA Convention this week.