Installed a B&D Instrument'Air Data Computer (# 4 ADC) P/N 2800A-041 S/N A01023 and Rosemount Probe P/N 129H S/N 74498.. to interface with the UNS- 1 Flight Management System, IRS (Laser Ref),•pilat's ALTM & ALT Data System, ALT Select-& Alert System: Operational testing of the system was performed (ground and flight tes