Sierra Industries announced today that it selected the GE Honda HF120 as the retrofit engine for its new Sapphire upgrade program for legacy CitationJets. Aircraft owners opting for the upgrade package will thus have the original factory-installed Williams FJ44-1A engines on their CitationJet, CJ1 or CJ1+ retrofitted with a pair of HF120s. According to Sierra, the HF120 will provide these legacy CitationJets with improved performance and enhanced productivity. The Sapphire retrofit plan would include Fadec engine management and redesigned engine pylons and nacelles for improved aerodynamics, as well as new avionics and interior.