Welcome to the SA4550
82010-PG, REV. F Sandel SA4550 Pilot’s Guide 1-1
CHAPTER 1 WELCOME TO THE SA4550
Introduction
The SA4550 Primary Attitude Display is a high performance
electronic ADI that can be used in new installations or as a
upgrade for electromechanical ADIs. It features a high
resolution, high brightness, and long life LED backlit display.
The SA4550 accepts pitch and roll input from the aircraft
Vertical Gyro to display attitude.
The SA4550 incorporates standard ADI features such as flight
director command bars and a glideslope/localizer deviation
scale, along with a fast/slow indicator, Radar Altitude/ Mins
and mode annunciations. A pilot-selectable single-cue/dual-
cue display option is also available.
The SA4550 typically displays data from the following sources:
Vertical Gyro
Navigation Receiver (ILS)
Radar Altimeter
Angle of Attack System
Flight Computer
Welcome to the SA4550
82010-PG, REV. F Sandel SA4550 Pilot’s Guide 1-2
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