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On a typical mechanical ADI the following information is shown…

  • A
    1. Roll attitude 2. Pitch attitude 3. Flight directors 4. Glideslope
  • B
    1. Roll attitude 2. Pitch attitude 3. Altitude 4. Airspeed
  • C

    1. Roll attitude 2. Pitch attitude 3. Altitude 4. Glideslope

  • D
    1. Flight directors 2. Altitude 3. Airspeed 4. Glideslope

Refer to figure.
Whether part of an EFIS display or a mechanical instrument, an Attitude Indicator (AI), Attitude Director Indicator (ADI) or Artificial Horizon (AH) provides flight crew with essential information about aircraft attitude relative to the real horizon. It is part of the essential set of instruments in any aircraft. It provides numerous useful data relative to the flight path of the aircraft (pitch and roll) and integrates the Flight Directors of the AP/FD system. Besides, it can also integrate additional guidance features such as the localizer and glideslope of an ILS.

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