in accordance with data approved by STC SA2388S0 and Western Commadner Drawing No. 08069157 N/C dated 11-14-88, approved by DER #NM-476. Installed 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 Man