Airbus A320 Cockpit Tour: #37 - Standby Instrument: What do all those buttons do?!

Follow me on IG@ MikeAbignale Visit my store: https://teespring.com/stores/mikes-sh... In this segment we will discuss the Standby Instrument in the A320 cockpit. GENERAL The ISIS system displays the following information: ‐ Attitude ‐ Airspeed and mach ‐ Altitude ‐ Barometric pressure ‐ LS function ‐ Bugs (1) ”+”/ “-” activation pushbuttons Two pushbuttons labelled “+” and “–” are used to adjust the level of brightness. The brightness of the screen automatically adjusts after power-up tests. This is because of the photosensitive cell located on the surface of the ISIS system display. The “+” and “–” pushbuttons then allow this initial brightness to be manually adjusted and changed. Note: The system must be reset after 350 h of continuous electrical supply using the « ATT RST » pushbutton (1) Fixed aircraft symbol The fixed aircraft symbol is in black, and outlined in yellow. Depending of the aircraft configuration, the center of the fixed aircraft symbol is a point (like on the illustration above) or “V-bars”. (2) Roll scale The roll scale is in white. The markers are at 0 (small yellow triangle), 10, 20, 30, 45, 60 ° of bank. (3) Roll index The roll index is in black, and outlined in white. It indicates the bank angle. (4) Lateral acceleration index The trapezoidal index moves beneath the roll index. It represents the aircraft’s lateral acceleration. (5) Pitch scale The pitch scale is in white. The scale shows markers every 2.5 ° between 30 ° nose up and 30 ° nose down. Beyond 30 °, large red arrowheads (V-shaped) indicate that the attitude has become excessive, and show the direction to follow in order to reduce it. The minimum pitch scale displayed is -17.5 ° +15 ° at 0 ° pitch. 6) ATT RST The attitude indication can be reset by pressing this pushbutton for at least 2 s. The aircraft must be level during this procedure. During the reset time (approximately 10 s), the “ATT 10 s” message is displayed on the screen. This pushbutton is also used to realign the system, if excessive aircraft movement is detected during the alignment phase. 1) Airspeed scale A white scale moves in front of a yellow triangle indicating the airspeed. The scale ranges from 5 to 250 kt, with a mark every 5 kt, and from 250 to 520 kt, with a mark every 10 kt. (2) Mach Number The Mach number is displayed in green it goes greater than 0.5. And it disappears only when it goes below 0.45. (3) Speed bug When a speed bug is entered via (1) Altitude indication The altitude indication is given as a white moving scale, and a green digital readout on a gray background. The altitude scale ranges from -2 000 to 50 000 ft every 100 ft, with altitude digital indications every 500 ft. For negative altitudes, "NEG" appears in the window in white. The altitude box changes to cyan, when it also corresponds to a bug value. Depending of the aircraft configuration, the altitude in meters is displayed above the altitude scale. (2) Barometric reference The barometric reference pressure is displayed in cyan. The displayed barometric reference is: ‐ The standard barometric reference "STD", or ‐ Depending of the aircraft configuration, the barometric pressure is "hPa" or "hPa/ inHg". (3) Barometric selection knob This knob enables the selection of a barometric pressure, setting a variation of 10 hPa per knob rotation. The standard barometric pressure can be selected by pressing the barometric knob. “STD” is then displayed, in place of the pressure value. Pressing the knob again will display the selected barometric pressure. (4) Altitude bug When an altitude bug is entered through the bugs function, the corresponding altitude mark is indicated by a cyan dash, or by a cyan box when the dash covers the digital indication on the scale.