Printer-Friendly Version

ADS-87A Air Data System

Overview

The Rockwell Collins ADS-87A Air Data System senses, computes and displays all parameters essential to flight. It is certifiable for compliance with the Reduced Vertical Separation Minimum (RVSM) requirements. The system is all digital, from the Air Data Computer (ADC) to the air data instrument displays.

Computed and available parameters include: indicated airspeed, true airspeed, vertical speed, Vmo/Mmo, static air temperature, total air temperature, preselected altitude, overspeed warning contacts, ADC valid contacts, uncorrected pressure altitude and barometric corrected altitude.

Its distinctive digital design is smaller, lighter and more energy efficient than previous generations of air data computers. The ADS-87A also offers: continuous monitoring of all functions and internal diagnostics; increased system reliability and integrity; simplified installation; and compatibility with the APS-65/80.