Collins ADS-80()/82()/85() Air Data System Pilot's Guide. No. 523-0768038-005117, dated 10-4-89. Covers: Introduction, The System, ADC-80()/82() Air Data Computer, ALI-80() Barometric Altimeter, PRE-80() Preselector / Alerter, VSI-80() Vertical Speed Indicator, MSI-80() Mach Speed Indicator, ASI-80() Airspeed Indicator, TAI-80() Temp/TAS Indicator, System Operation, Preflight Checklist, In-Flight Troubleshooting, Malfunction Diagnosis, and Pilot Writeup. Manual is an original.