ng and D.E.R. approved structural. drawing shows the installation of the antenna RT Unit, 0000088 "RTA-858 Antenna Ihitailation". 7.). Installed a Collins Air Data Computer ADC-80H‘DaDc, ADA-85 ADC adapter and TAI-80A TAS/TEMP indicator, using the existing temp probe. The computer is mounted•to a hat section pap with -flat plates a