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PLG12863E 

AFI4700 Pilot’s Guide 

18 

1.3.6 

Crosslink 

When more than one display is installed, the AFI4700s will 
communicate with each other via an RS-422 serial interface crosslink 
bus. In order to provide assurance of data accuracy, the EFIs 
constantly compares attitude, heading, localizer, glideslope, and radar 
altimeter information between the two displays. The crosslink bus also 
allows the display of offside attitude and heading. 

 

Figure 1-7: Crosslink 

Summary of Contents for RoadRunner AFI4700

Page 1: ...THE AFI4700 ELECTRONIC FLIGHT INSTRUMENT EFI ASTRONAUTICS PN 276800 To view Astronautics Certificate of Approval for this document click here http www astronautics com certificates Astronautics Corpo...

Page 2: ...t section 2 Updated RA Test Section 3 Updated GPS CDI Section 2019 04 11 G Younger D 1 Added HTAWS alerts 2 Added error messages along with their description 3 Added description for DH adjust on the r...

Page 3: ...d figure 3 12 to show rotary craft depiction 4 Added GPS mode descriptions to section 3 3 6 5 Updated figures 3 14 3 19 3 20 and 3 22 for Time to Waypoint indication 6 Changed EFI FAIL to CHECK EFI in...

Page 4: ...Annunciation 24 2 4 1 Flight Director Autopilot Modes 24 2 4 2 Flight Director Display 26 2 5 Approach Annunciation 27 2 5 1 Glideslope Indicator 27 2 5 2 Lateral Deviation Indicator 28 2 5 3 Expanded...

Page 5: ...arning System 56 3 3 4 1 External HTAWS Terrain Color 57 3 3 4 2 External HTAWS Alerts 58 3 3 5 VOR Display 60 3 3 5 1 Using the VOR Map 61 3 3 6 GPS Overlays 63 3 3 6 1 GPS Symbol Description 67 3 3...

Page 6: ...WAAS Indicator 29 Figure 2 12 Rising Runway 30 Figure 2 13 Horizon Sync 31 Figure 2 14 Offside Indications 32 Figure 2 15 Onside Attitude 33 Figure 2 16 Pilot Offside Attitude 34 Figure 2 17 Copilot...

Page 7: ...2 3 Marker Beacon 30 Table 2 4 Offside Indications 32 Table 2 5 Attitude Miscompare Symbols 37 Table 3 1 Left Bezel button Actions 48 Table 3 2 Center Bezel button Actions 48 Table 3 3 Right Bezel but...

Page 8: ...PLG12863E AFI4700 Pilot s Guide 8 Table 6 4 Weather Radar Colors 88 Table 6 5 TCAS Symbols 88...

Page 9: ...or ADI and Horizontal Situation Indicator HSI Figure 1 1 System Description The AFI4700 is designed to interface with existing and or retrofit attitude and heading units navigation radios GPS systems...

Page 10: ...PLG12863E AFI4700 Pilot s Guide 10...

Page 11: ...rcraft power up the display may start faster than other systems such as gyros resulting in a time delay between power up and the system receiving valid signals During this time the display will presen...

Page 12: ...ing System TAWS and a Physical Slip Skid Indicator To interact with these features the display unit includes eight 7 bezel buttons one 1 brightness rocker button and two 2 rotary knobs that rotate and...

Page 13: ...e AFI4700 is a rocker switch used to adjust the brightness of the display Left Multifunction The left bezel button toggles the Weather Radar Terrain and Lighting Detection overlay when configured Cent...

Page 14: ...ing the Menu button displays a page with a list of items which can be cycled through using the left rotary knob Options can be chosen by pressing the corresponding left or center bezel button directly...

Page 15: ...ile mode with the center bezel button VP LX Provides an option to clear lightning icons when the map is displayed with the left bezel button CLEAR HSYNC Hold the left bezel button SYNC for three secon...

Page 16: ...ing the System Menu After selecting the MENU bezel button the MENU Page is displayed where six 6 pages can be cycled using the left rotary knob Select the page items by using the left and center multi...

Page 17: ...the brightness rocker button in the top right corner of the bezel to compensate for ambient lighting conditions Press the left side of the rocker button to dim and the right side of the rocker button...

Page 18: ...h each other via an RS 422 serial interface crosslink bus In order to provide assurance of data accuracy the EFIs constantly compares attitude heading localizer glideslope and radar altimeter informat...

Page 19: ...sion Height Flight Director Collective Indicator Flight Director Vertical Mode Armed Flight Director Vertical Mode Active Lateral Deviation Scale Lateral Deviation Indicator Roll Pointer Flight Direct...

Page 20: ...ts indicate vertical deviation scale from the active navigation source input Vertical Deviation Indicator The current vertical deviation from the active navigation source input Flight Director Valid F...

Page 21: ...ion regarding aircraft state flight cues and rising runway are also displayed on the ADI Figure 2 2 Attitude Indicator Each horizontal white line above or below the horizon line indicates the pitch la...

Page 22: ...adar Altimeter Decision Height The radar altimeter displays the aircraft height above the ground via radar sensing in the upper right corner of the ADI display The decision height DH is provided as a...

Page 23: ...r Altimeter is tested from the test menu In the test menu depressing the RA button for three seconds activates a discrete output to the RA unit to initiate the test The exact behavior of the RA test p...

Page 24: ...n letters indicating FD coupled 2 Magenta letters indicating FD decoupled or 3 Yellow letters showing FD FAIL indicating FD failure The EFI does not control the flight director modes it only displays...

Page 25: ...oach mode vertical guidance GS GS Glideslope capture mode GA Go around mode Autopilot modes are annunciated along the top of the display White indicates armed modes and green indicates active modes Ar...

Page 26: ...he aircraft flight path The vertical bar is a heading cue roll command and the horizontal bar is a pitch cue The aircraft is on path when the bars are both centered over the aircraft reference symbol...

Page 27: ...h glideslope GS and lateral deviation indicators will appear along the ADI The vertical deviation or glideslope GS indicator will appear to the right of the pitch scale while the lateral deviation ind...

Page 28: ...and no glideslope signal is provided GS FAIL is annunciated in place of the glideslope indicator 2 5 2 Lateral Deviation Indicator Figure 2 9 Lat Dev Indicator The lateral deviation indicator is displ...

Page 29: ...for the Lateral Deviation Indicator during expanded localizer mode is 0 0875 DDM when tuned to an ILS approach and is not available when controlled by the GPS The course deviation indicator on the HSI...

Page 30: ...ach and below 200 above the runway 2 5 6 Marker Beacon Color coded marker beacons are annunciated in the bottom left corner of the ADI Outer Marker Middle Marker and Inner Marker are displayed when th...

Page 31: ...is by changing the current pitch attitude to zero and placing yellow tick marks where the pitch attitude used to be Horizon Sync mode is selected through the system menu s HSYNC tab In order to activa...

Page 32: ...side navigation sources Table 2 4 Offside Indications Nav Source Copilot Display Pilot Display VOR1 Offside Onside VOR2 Onside Offside GPS1 Offside Onside GPS2 Onside Offside Indicators that are affec...

Page 33: ...operation or a gyro failure the pilot or copilot can select their EFI to display attitude from the offside source ATT1 or ATT2 is annunciated in the top left corner of the ADI to indicate which side...

Page 34: ...PLG12863E AFI4700 Pilot s Guide 34 Figure 2 16 Pilot Offside Attitude...

Page 35: ...PLG12863E AFI4700 Pilot s Guide 35 Figure 2 17 Copilot Offside Attitude...

Page 36: ...PLG12863E AFI4700 Pilot s Guide 36 Figure 2 18 Offside Attitude...

Page 37: ...tude sources is detected ATT is annunciated in the top left corner of the HSI Table 2 5 Attitude Miscompare Symbols Symbol Description PIT The pitch difference between onside and offside sources excee...

Page 38: ...ed to a radio navigation source The AFI4700 supports GPS navigation sources and graphical overlays and are described in further detail in their respective sections Figure 3 1 HSI Description Compass C...

Page 39: ...ays are selected to the same active navigation source the selected course and course pointers are synched between displays Course Pointer A graphical representation of the selected course A two part a...

Page 40: ...ards the navigation source or along the navigation course line Bearing 2 Preview Source An annunciation of the currently displayed bearing 2 preview source This may be enabled or hidden through the BR...

Page 41: ...no turn rate the indication is removed from the display Turn Rate on Full Compass Turn Rate on Arc Compass Figure 3 2 Turn Rate Indication The display of the Turn Rate Indication is optional with sele...

Page 42: ...m the aircraft symbol to the heading bug and remains for 5 seconds The readout and heading bug is colored green except when the autopilot indicates HDG mode then the selected heading is changed to mag...

Page 43: ...knob This is indicated by changing the color of the readout and graphical depiction to magenta 3 2 3 1 Course Deviation Indicator The course deviation indicator CDI consists of a bar that shifts left...

Page 44: ...navigation source the course deviation bar is commanded by the GPS s lateral cross track error Each dot no longer represents a constant deviation and changes based on phase of flight and type of appr...

Page 45: ...yed Likewise if the system configuration only has a single ADF then the DF option will not be displayed 3 2 4 Full Compass or Arc Mode Selection The compass card can be changed to depict either a full...

Page 46: ...5 Off Scale Indications When the HSI is displayed in ARC mode and the heading bug or bearing previews are to be shown outside of the field of view the icons are drawn at the edge of the display closes...

Page 47: ...PUSH TERR WX WX LX LX WX Default MAP MAP Default Right Softkey PUSH TCAS TCAS Default MAP RTE MAP MAP RTE STA MAP RTE APT MAP Default VOR1 or VOR2 GPS1 or GPS2 LX TERR Figure 3 8 Bezel button Selecti...

Page 48: ...ening Detection and Terrain Awareness and Warning System TAWS overlays 3 3 1 2 Center Bezel button Table 3 2 Center Bezel button Actions Bezel button Text Nav Source Description MAP VOR1 VOR2 Default...

Page 49: ...isplaying active route and nearest navaids RTE APT MAP GPS1 GPS2 GPS Map overlay displaying active route and nearest airports 3 3 1 3 Right Bezel button Table 3 3 Right Bezel button Actions Bezel butt...

Page 50: ...240 320 nm Figure 3 9 Map Range Ring Distance 3 3 2 Weather Radar The EFI interfaces with a Color Weather Radar WXR to provide weather patterns to the flight crew on the HSI The left bezel button cyc...

Page 51: ...PLG12863E AFI4700 Pilot s Guide 51 Figure 3 10 Weather Radar Full Mode Figure 3 11 Weather Radar Arc Mode...

Page 52: ...ather radar indicates it is in standby mode WX ALRT The weather radar indicates a target alert WX MAP The weather radar indicates it is in map mode WX TEST Weather radar is displaying in test mode 15...

Page 53: ...10 20 40 80 16 240 or 320 NM The inner three rings are and of the full range scale Figure 3 12 Weather Radar Vertical Profile WXR SCAN is a menu tab that appears only when in Vertical Profile mode It...

Page 54: ...the HSI using distance bearing and intensity information received from the Lightening Detection system Figure 3 14 Lightening Detection When the overlay is not displayed the bezel button legend will...

Page 55: ...ghtning intensity from thin yellow thick yellow with arrow and thicker yellow with arrows lightning bolts representing low medium and high intensity storm cells respectively Table 3 6 Lightening Detec...

Page 56: ...coloring and annunciation of alerts For specific operation and alert criteria consult the guide for the connected HTAWS device The AFI4700 supports interfacing with inputs from an external HTAWS or EG...

Page 57: ...n 50 Red Dots Terrain Obstacle is more than 500 feet above aircraft altitude 50 Amber Dots Terrain Obstacle is between aircraft altitude and 500 feet above 25 Amber Dots Terrain Obstacle is between ai...

Page 58: ...ck to FULL mode or to Dismiss Pop Up the pop up and remain in ARC mode as seen in Figure 3 17 Consult your HTAWS manual for the specific alerts and alerting criteria when interfacing with an external...

Page 59: ...PLG12863E AFI4700 Pilot s Guide 59 Figure 3 17 FLTA Popup Alert...

Page 60: ...by the navigation radio When DME is not configured the MAP label and selection are not available Station Active Navigation Source Distance to Station TO FROM Indicator TO Course Line FROM Course Line...

Page 61: ...b is rotated FROM Course Line The dashed green line extending from the station is the FROM course line This line rotates around the station when the Course knob is rotated 3 3 5 1 Using the VOR Map As...

Page 62: ...Pilot s Guide 62 Table 3 9 Intercepting a Radial Steps Using the CDI Using the VOR MAP Flying a course of 310 to intercept the 20 radial Radial inter cepted CDI is centered Right turn towards VOR main...

Page 63: ...avigation source is selected It is enabled by the center bezel button Additional map elements route navaids and airports not on the active flight plan can be hidden from view by selecting the center b...

Page 64: ...ived ground speed is displayed in knots Wind Vector Wind direction and magnitude are displayed relative to the aircraft s orientation Ground Track This white caret displays the track of the aircraft o...

Page 65: ...des CDI scaling may differ Consult the manual for the specific GPS for more information The GPS indicates in which mode it is operating Depending on the modes CDI scaling may differ Consult the manual...

Page 66: ...lot s Guide 66 Pressing the center multifunction bezel button cycles through the four available options to display GPS map data MAP RTE MAP MAP RTE STA MAP RTE APT MAP Default Figure 3 21 GPS Map Beze...

Page 67: ...Magenta symbols and vectors represent the active waypoint White symbols and vectors represent non active waypoints The various symbols used on the map overlay are presented below Table 3 11 GPS Map S...

Page 68: ...tive the bezel button legend will appear in green Figure 3 22 TCAS 3 3 7 1 TCAS Symbol Description When the traffic symbols are displayed on the Traffic Overlay they are accompanied by their altitude...

Page 69: ...raffic aircraft is below ownship Both modes display a trend arrow next to the traffic aircraft symbol pointing up if the traffic is climbing or pointing down if the traffic is descending Traffic Symbo...

Page 70: ...a for a Traffic Advisory is met Resolution Advisory TCAS criteria for a Resolution Advisory is met The EFI does not provide resolution cues on the ADI but will display the resolution advisory icon if...

Page 71: ...yed BLW_ TCAS The TCAS system indicates it is operating in look up mode where traffic detected 9 000 ft and 2 700 ft of ownship is displayed THRT_ TCAS The TCAS system indicates that only threats will...

Page 72: ...rs When the TCAS is unable to track the bearing of an intruder the EFI will display the TA distance altitude and trend next to the TCAS bezel legend The EFI will display up to three No Bearing intrude...

Page 73: ...FI to display heading from either the same side or offside source HDG1 or HDG2 is annunciated in the top left corner of the HSI to indicate which side the heading is sourced from Even though one displ...

Page 74: ...PLG12863E AFI4700 Pilot s Guide 74 Figure 3 27 Pilot Offside Heading...

Page 75: ...PLG12863E AFI4700 Pilot s Guide 75 Figure 3 28 Copilot Offside Heading...

Page 76: ...PLG12863E AFI4700 Pilot s Guide 76 Figure 3 29 Offside Heading...

Page 77: ...5 Heading Miscompare Annunciations Symbol Description HDG The heading difference between onside and offside sources exceeds 6 RA The radar altitude reported between dual radar altitude units differs b...

Page 78: ...layed from the Attitude 1 source No action is necessary ATT2 Attitude source An advisory message that occurs when both EFI displays are configured to display attitude from the Attitude 2 source Switch...

Page 79: ...and is now in dead reckoning mode GPS position is now estimated Consult the GPS for more information CHECK EFI EFI A Built In Test BIT fault has been detected Contact maintenance for service GPWS GPWS...

Page 80: ...NAV radio and contact maintenance for service HDG1 Heading source An advisory message that occurs when both EFI displays are configured to display heading from the Heading 1 source Switch the EFI hea...

Page 81: ...FAIL Navigation ILS is selected and communication from the unit providing lateral deviations is missing or invalid Contact maintenance for service and do not use ILS for navigation LOI GPS The GPS un...

Page 82: ...OFFSCALE TCAS TCAS is enabled and is detecting a traffic threat but the map range is too low to display the threat Increase map range to display the traffic threat PIT Miscompare annunciation Indicat...

Page 83: ...overlay TERR 453 HTAWS No ARINC 453 HTAWS data detected when external HTAWS selected Contact maintenance for service TGT ALERT Weather radar The weather radar unit indicates either a horizontal or ve...

Page 84: ...and vertical gain received by the EFI from the control panel Contact maintenance for service Do not use the weather radar overlay WX DISAGREE Weather radar horizontal The horizontal mode and horizonta...

Page 85: ...lows for maintenance of Weather Radar The maintenance mode is available upon selection of MAINT in the menu while the aircraft is on ground Upon entering the maintenance mode a list of installed softw...

Page 86: ...erence Note The following tables describe the symbols that are located on the HSI Map displays 6 1 Map Symbols Table 6 1 GPS Map Symbols Symbol Description Waypoint VORTAC TACAN VOR DME VOR DME colloc...

Page 87: ...reat Area Warning Solid Amber Terrain Obstacle Threat Area Caution 50 Red Dots Terrain Obstacle is more than 500 feet above aircraft altitude 50 Amber Dots Terrain Obstacle is between aircraft altitud...

Page 88: ...Symbol Description Other Traffic Traffic is greater than 1200 ft vertical separation and beyond 6 nm Proximate Traffic Traffic is less than 1200 ft vertical separation and within 5 nm Traffic Advisor...

Page 89: ...er DG Directional Gyro DGRD Degraded DH Decision Height DME Distance Measuring Equipment DR Dead Reckoning EDGSD Excessive Downward Glide Slope Deviation EFI Electronic Flight Instrument EGPWS Enhance...

Page 90: ...ge NAV Navigation NCAT Negative Climb After Takeoff NVIS Night Vision System PIT Pitch RA Radar Altimeter RNG Range ROL Roll RTE Route RTE APT Route Airport RTE STA Route Navaids SS Lightening Detecti...

Page 91: ...PLG12863E AFI4700 Pilot s Guide 91 VP Vertical Profile VS Vertical Speed WAAS Wide Area Augmentation System WPT Waypoint WX Weather WXR Weather Radar...

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