De Vore Logo Lights per data approved by STC SA4749SW Rev. #3 dated 1-21-88. Installed a third Honeywell Inertial Reference System (IRS), a third Honeywell Flight Management System, NZ910 Navigation Computers (3), and a Single Honeywell VLF/OMEGA Sensor in accordance with data approved by STC SA3774NM. Flight Manual supplemen