Attitude Director Indicator
The ADI presents primary aircraft attitude indication as well as pitch and roll information to the flight crew. In addition, other ancillary data is displayed, like ground speed, autopilot, auto-throttle, and flight director modes, etc. The ADI with conjunction with the Horizontal Situation Indicator (HSI) presents complete aircraft attitude and position information to the pilot.
From the book “Boeing 757/767”, series Modern Civil Aircraft, by Philip Birtles, first published in 1987.
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