Citation Modifications
In 1986, Sierra obtained the rights to produce the EAGLE and LONGWING modifications pertaining to certain models of Cessna Citation aircraft. Sierra has also acquired the rights to Branson Industries' line of Citation modifications, and the highly regarded Robertson R/STOL line of Performance and Safety Enhancements modifcations. In 1999, Sierra again acquired another highly regarded line of aircraft performance enhancements owned by the Dee Howard company of San Antonio, Texas. |