Learjet 23Review model information, registered aircraft, and current Plane Desire listings.23 aircraft are represented in current FAA registration data.N1963AN415LJN46452N824LJN119BAN123MJN140RCN154AGN23BYN2503LN37BLN477KN73CEN806LJN820LN856JBN992TDN121CKN200YN3BLN618BRN6262TN823LJ