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066-01171-1804
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Model Number: IVA81D
Description: SELECTOR PANEL
Manufacturer HONEYWELL
Alternate Part Number
National Stock Number
Categories Indicators
Repair Capabilities YES
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Product Details

The IVA-81D Traffic Advisory/Resolution Advisory/Vertical Speed Indicator combines the vertical speed instrument with the TA and RA display functions. Red and green bands around the circumference of the screen give RA information. Traffic location is presented on the face of the display inside the vertical speed scale. The TA Select Pushbutton can be wired for either a Traffic Select or Switchable configuration at time of installation. In both configurations, when a TA or RA is present all traffic pop-up on the display. Pressing the button alternates between showing all traffic and VSI display only. When the display is clear of traffic, presence of a new TA or RA intruder pop-up all traffic on the display. Without traffic the instrument operates as a VSI only.

The IVA-81D is part of the TCAS II system. The TCAS II is a system used for detecting and tracking aircraft in the vicinity of your own aircraft. By interrogating their transponders it analyzes the replies to determine range, bearing, and if reporting altitude, the relative altitude of the intruder. Should the TCAS II processor determine that a possible collision hazard exists, it issues visual and audio advisories to the crew for appropriate vertical avoidance maneuvers. There are two types of cockpit displays for TCAS II, the Resolution Advisory (RA) display and the Traffic Advisory (TA) display. The RA display is incorporated into the vertical speed indicator (VSI). By illuminating red and green arcs around the dial it displays the required rate, or limitation of climb or descent, to avoid a possible collision. For all NVIS types, when the NVIS mode is selected, the pointer, border, numerals and the scale graduations which are normally white will be green.

Part Number Differences:
Part NumberBezel ColorBright ColorLighting BusPrimary PowerTA Select SwitchNight Vision CapableRange Control Up Down
066-01171-0901BlackYes5 VAC or VDC115 VACYesNoNo
066-01171-0903BlackYes5 VAC or VDC115 VACYesNoNo
066-01171-0904BlackYes5 VAC or VDC115 VACYesNoNo
066-01171-1001GrayYes5 VAC or VDC115 VACYesNoNo
066-01171-1004GrayYes5 VAC or VDC115 VACYesNoNo
066-01171-1101BrownYes5 VAC or VDC115 VACYesNoNo
066-01171-1704BlackYes5 VAC or VDC28 VDCYesNoNo
066-01171-1804GrayYes5 VAC or VDC28 VDCYesNoNo
066-01171-2304BlackYes28 VDC28 VDCYesNoNo
066-01171-2702BlackYes5 VAC or VDC28 VDCNoNoYes
066-01171-2704BlackYes5 VAC or VDC28 VDCNoNoYes
066-01171-2804GrayYes5 VAC or VDC28 VDCNoNoYes
066-01171-3104BlackYes28 VDC28 VDCNoNoYes
066-01171-3404GrayYes5 VAC or VDC115 VACNoNoNo
066-01171-3504BlackYes5 VAC or VDC115 VACNoNoYes
066-01171-3604GrayYes5 VAC or VDC115 VACNoNoYes
066-01171-3704BlackYes28 VDC115 VACNoYesYes
066-01171-3706BlackYes5 VAC or VDC115 VACNoYesYes
066-01171-8102GrayNo5 VAC or VDC115 VACNoNoNo