Sandel SN3308 HSI Part 1 - Taxiing The SN3308 ColorMap HSI has generated a lot of excitement. And a lot of questions. Was it designed for a fixed-gear single or a cabin-class twin? Is it compatible with my airplane? Why did it win Aviation Consumer's Gear Of The Year award? Whatever your question, whether you're already an owner and you're looking for tips to become a power user or if you're just wondering what all the fuss is about, we've decided to run a multi-part series on how to use it, and let you decide if the SN3308 is right for you. We begin by talking about the first phase of flight, the taxi. It may seem like overkill to use an EFIS to taxi and we're certainly not recommending that you taxi while staring at the panel. But airport environments can be complicated, runway incursions are on the rise, and a pre-taxi or post-landing glance at an unfamiliar airport environment can really help by answering the basic question: Where am I?... Here's a display of Long Beach, California, which has many complex intersecting runways. Notice how easy it is to visualize the taxi direction to any runway. And remember, unlike multi-function displays, the entire SN3308 airport diagram turns in real time along with the compass card, presenting the correct view no matter which direction you turn. NAV: GPS MAP: ON BRG: OFF VUE: ARC RANGE: 1 Mile NAV: GPS MAP: ON BRG: OFF VUE: 360 RANGE: 1 Mile For these situations we want to display the airport on a one mile scale and for taxi we don't want to display our flight plan course line or our two bearing pointers. So here's how we set it up. The MAP key is used to step through screen views until airports are shown and the GPS courseline and waypoint data are off, since we're not ready to show our flight plan just yet - we just want to see the airport diagram. The VUE button is set to show the 360 degree compass rose or ARC view. The DOWN ARROW zooms in to the 1 mile range. Even when the runway and taxiway layout isn't that complex, taxiing to a distant FBO can complicate the journey. Add a little rain or blowing snow and it can start to get interesting. Shown at left is the 3308 set to 1 mile scale at Du Page, Illinois. Once again we've set MAP to display the airport without our course line. This time the VUE button is set to display the 90-degree arc mode for more screen area and resolution ahead. And what about the SYNC, SHFT and A-B? We don't need these advanced feature buttons yet until we're ready for takeoff. So now that you've had a glimpse of the SN3308 capabilities on the ground, in part-II we'll get airborne and set up for an IFR departure, and preset the display using the A-B function for an emergency ILS back to the field. Part 2 - Departure Scenarios Welcome to Part II of our multi-part series on the SN3308 ColorMap HSI. In our last installment, we talked about using the SN3308 during taxi. This time we‟ll look at two typical departure scenarios. As you will see, the SN3308 can show a lot more than the compass heading and course deviation of a mechanical HSI. For an IFR departure we'd set up the MAP to show flight plan waypoints, nearby navaids and nearby airports. Bearing Pointer 1 (the blue arrow) would be set to GPS1 so it always points straight ahead to the next GPS waypoint, and Bearing Pointer 2 (the green arrow) might be set to a nearby navaid. In this case we‟ve set it to the VOR at our departure airport, KTEB, Teterboro, NJ. The Bearing Pointers are helpful in routine navigation but in an emergency after takeoff we can really put them to work, as you will see. Take a look at the actual screen shot at right. We‟ve departed KTEB to the west and shortly after departure we have an emergency which demands an immediate landing. On the GPS we‟ve selected the nearest airport with an ILS, in this case the ILS 23 to KMMU, Morristown, NJ. The SN3308 then displays a courseline from the present position to the IAF (MOREE), the courseline to the airport and even the missed-approach to CAT NDB. Which way to turn? Turn on to the courseline to MOREE intersection, the IAF. When Bearing Pointer 1 is directly on the lubber line you will be heading "direct-to" MOREE. And Bearing Pointer 2 is still pointing to KTEB as a secondary option. VFR Flight/San Antonio direct Austin NAV: GPS MAP: ON BRG1: GPS1 BRG2: OFF VUE: ARC RANGE: 75nm COURSE POINTER: OFF IFR Departure/Emergency ILS to KMMU Rwy 23 NAV: GPS MAP: ON BRG1: GPS1 BRG2: NAV1 VUE: 360 RANGE: 15nm COURSE POINTER: OFF Let‟s look at another flight scenario. This time we've just departed VFR from runway 30R at KSAT, San Antonio, TX, on a GPS flight plan direct to KAUS, Austin, TX. We've set the MAP to ARC view to give us a forward display of the flight plan waypoints and airspace boundaries. Again we have set Bearing Pointer 1 to GPS1 to assist in turning on-course after departure regardless of the departure runway. Also notice the airspace depiction colors on the map. The dotted green lines are the Class C airspace, yellow are the Alert areas, and purple are the MOAs. As we get closer to KAUS the level of detail of the airspace will automatically increase as we zoom in the map range. Below 15nm range the destination airport icon will change from a circle to the actual runways, including the runway numbers. And one important difference between the SN3308 map and the map on the GPS receiver is the instantaneous response to movements in the aircraft heading – it turns as fast as the airplane with no redraw time. Now that you‟ve had a glimpse of the SN3308 capabilities in the departure phase, in Part III we‟ll explore a couple of enroute scenarios. Part 3 - En Route Scenarios Welcome to Part III of our multi-part series on the SN3308 ColorMap HSI. In previous installments, we talked about using the SN3308 during taxi and departure. Now let‟s take a look at a typical enroute scenario and show how to take advantage of the SN3308‟s powerful A-B feature, which allows you to toggle instantly between two pre-selected screens. It‟s almost like having two instruments. In this scenario, we‟re northbound on V3 approaching the Palm Beach VOR. Our GPS is set on a flight plan from KFEX, Fort Lauderdale, FL to KVRB, Vero Beach, FL. We‟re taking advantage of the A-B function by presetting the „A‟ display in ARC view at 100nm range to show the flightplan route ahead overlaid with Stormscope data. In the "B" display we‟ve selected a shorter range in 360- degree view, including the surrounding airspace and airports. In the screen shot at right you can see the ARC vue with a range of 100nm. Note the „A‟ label next to the compass heading. Also notice that next to the MAP key the waypoint symbol icon is displayed, indicating that the flight plan waypoints are selected on the map display. All changes that you make to this display are stored in the „A‟ memory automatically. The map shows our flight plan with the cyan bearing pointer for GPS1 set to the active waypiont, PBI. The active flight plan leg is shown in magenta with other legs shown in white. The green symbols in the display are strikes detected by a WX-500 Stormscopeâ . Thunderstorm activity is showing to the northeast. IFR Enroute / 360 Mode V3 from KFEX to KVRB NAV: GPS MAP: ON BRG1: GPS1 BRG2: OFF VUE: 360 RANGE: 30nm COURSE POINTER: OFF IFR Enroute / ARC Mode V3 from KFEX to KVRB NAV: GPS MAP: ON BRG1: GPS1 BRG2: OFF VUE: ARC RANGE: 100nm COURSE POINTER: OFF Pressing the A-B button now recalls the „B‟ display, showing a close-in 360- degree view. Notice that „B‟ is now displayed to the right of the compass heading. The MAP icons show waypoints, airspace and airports enabled, giving a clear picture of our current position and a 360° view of weather. Either the „A‟ or „B‟ display can be selected instantly, or changed in any way, without affecting the other. The flexibility of the SN3308 allows the A-B function to be used in a number of ways. For example, you can use A-B to immediately declutter the moving map and bring up a traditional HSI display with a center deviation bar. The A-B button makes this a quick operation by toggling between the two displays with each press. And because there is no re-draw time, this feature gives the effect of having two instruments. So there you have it. Switching between two virtual instrument memories is literally as easy as "A-B". Once you start flying with the SN3308 you‟ll be amazed at how much easier it can make your instrument flight. Now that you‟ve had a glimpse of the SN3308 A-B capability, in part IV we‟ll explore details of the SN3308 Map. Part 4 - Autoslew and SYNC Welcome to Part-IV of our monthly series on the SN3308 ColorMap HSI. This time we‟ll look at the auto-slew and sync features and show how they can reduce your workload during flight, giving you more time to size up the big picture and stay ahead of the aircraft. The SN3308 brings these advanced features into the cockpit of GA aircraft for the first time. The auto-slew feature will automatically rotate the course pointer to the desired course being sent from your GPS while it is in normal LEG or SEQ mode. This eliminates the need to manually rotate the course pointer knob at each waypoint on your GPS flight plan - also eliminating the MSG annunciation telling you to do so. With your autopilot in NAV mode, the SN3308 will fly your flight plan „hands- off‟, freeing you to concentrate on other duties during flight. In the screen shot at right we‟re leaving the Portland, Oregon Class C airspace northbound on V 23 approaching the Battle Ground VOR (BTG). Distinct colors are used for easy interpretation of the data. Notice that the active flight plan leg is shown in magenta, the upcoming leg in white and the course pointer in cyan. The green dashed lines depict Class C airspace. To stay on the airway after BTG the display shows a twenty-degree left turn at the station, and the GPS "WPT" annunciator flashes on the screen, giving a clear indication of the approaching waypoint. With auto-slew enabled, the course pointer will then turn automatically causing the autopilot to fly the new course. Try that with a mechanical HSI! IFR Enroute on V 23 near UBG VOR after pressing SHFT>SYNC NAV: NAV1 MAP: ON BRG1: NAV1 BRG2: OFF VUE: 360 RANGE: 30nm COURSE POINTER: ON IFR Enroute on V 23 north of Portland, approaching the BTG VOR NAV: GPS1 MAP: ON BRG1: GPS1 BRG2: OFF VUE: ARC RANGE: 5nm COURSE POINTER: ON Let‟s consider another example which uses the SYNC button to perform a very useful function: centering the CDI needle and navigating direct-to a VOR. In the screen shot at left we‟re approaching Portland from the south on V 23. We‟re told to proceed direct to the Newburg VOR (UBG), a 60-degree left turn, as a temporary vector for traffic. By pressing the NAV button on the SN3308, we can change the NAV source from GPS to our NAV1 radio. Notice that the course pointer and NAV information are now in green. The magenta line indicates the original flight plan along V 23. The SN3308‟s course-sync function makes navigation to the off-course VOR a snap: after tuning UBG on the NAV receiver, press SHFT and then SYNC to automatically center the CDI needle and rotate the course pointer until it is pointing at the VOR as shown. Keep the needle centered and we‟re tracking directly to the VOR until ATC allows us to return to our original course. Did you know that no EFIS system – at any price – has the features of the SN3308? Our solution now allows you to install EFIS capability into your aircraft at a fraction of the cost of obsolete CRT technology. Now that you‟ve had a glimpse of the SN3308 capabilities in the enroute phase, in part-V we‟ll explore approach scenarios. Part 5 - The ILS Approach Welcome to Part-V of our series on the SN3308 ColorMap HSI. In previous installments we‟ve shown that you can customize your map and airspace settings to meet your needs during the departure and enroute phases of your flight. This time we‟ll examine a typical ILS scenario to show how valuable the SN3308 can be during an approach. In this scenario we‟re inbound on the ILS 35R approach to Centennial Airport (KAPA) in Denver, CO. From the northeast, the approach begins with a transition from the Falcon VOR to CASSE LOM, which is also the IAF. From CASSE the route takes us through the procedure turn. Once you‟ve selected and activated the approach on your GPS, the SN3308 immediately draws that approach in full color. The SN3308 can also use additional information from the newest generation of GPS receivers (such as the Garmin GNS 430™ ) to display holding patterns, procedure turns and DME arcs. Your entire navigation situation is now right in your scan. By combining the functions of a moving map and HSI on one display, the SN3308 hugely simplifies complex approaches. In the screen shot at right we‟ve already completed the procedure turn and are now on final for runway 35R. The active leg of the approach is shown in magenta with the other legs shown in white. We‟ve also activated the two bearing pointers of the SN3308 to provide additional navigation information. Bearing Pointer 1 (cyan) is set to the GPS receiver and is pointing to the active waypoint, RW35R. Bearing Pointer 2 (magenta) is coupled to the ADF receiver tuned to CASSE, which we have just passed and is now behind us. ILS Rwy 35R approach to KAPA, Denver Centennial Airport NAV: NAV1 MAP: OFF BRG1: GPS1 BRG2: ADF1 VUE: 360 RANGE: N/A COURSE POINTER: ON ILS Rwy 35R approach to KAPA, Denver Centennial Airport NAV: GPS1 MAP: ON BRG1: GPS1 BRG2: ADF1 VUE: 360 RANGE: 10nm COURSE POINTER: AUTO In the screen shot at left we‟re on final, 1.8 miles from KAPA. The SN3308 has automatically switched to ILS mode as we‟ve tuned in the ILS frequency and are receiving a valid glideslope signal. We‟ve turned off the map, but of course you can choose to leave the map information on the display if you like. We‟re a half- dot high on the ILS and lined up with the runway. Bearing Pointer 1 points straight ahead, pointing to the ILS. Bearing Pointer 2 is still pointing to CASSE which is behind us. On this approach, CASSE is also the first fix on the Missed Approach Procedure, so if we miss, the bearing pointer is already set to take us there. Notice that the course pointer and deviation bars have switched from cyan to green as the primary nav source for the SN3308 has switched from the GPS to the ILS. This color-coding makes the information easy to interpret no matter how complex a display you choose to show. The SN3308 is a true EFIS for general aviation. It’s a direct replacement for your current HSI, but offers much more information than standard mechanical instruments. In this series we’ve tried to demonstrate that whether you’re flying a cabin class twin in the flight levels or a single in severe clear, the big leap in capabilities of the SN3308 will reduce your workload and make your flight safer and more enjoyable. FAQ What is the Sandel SN3088 ColorMap HSI? It's a full-function, three-inch EFIS combining an HSI, RMI and color moving map display, priced to be affordable for any general aviation aircraft owner. Sandel's breakthrough technology employs an innovative miniature LCD projector to display information from a wide variety of instruments and remote data sources, selected with a set of easily accessed buttons surrounding the display. It fits conveniently into the main panel of almost any aircraft, and can be used to legally replace a required DG or HSI. The ColorMap HSI gets its heading data from a flux gate or DG, and nav data from a VOR, GPS, Loran, ADF, RMI, DME or marker beacon. It can also display data from a remote Stormscope. I've always wanted a product like this, why haven't I seen this before? Until the invention of the SN3308 only instruments in four-inch cases have been able to produce three-inch screen images. This has ruled them out for use in the majority of GA airplanes because of space. Although all the major avionics manufacturers have at one time considered a product like the SN3308, it has always been considered an impossibility to build a practical display inside a three-inch case. How does it work? Sandel invented an innovative LCD-based “rear-screen” color projector which uses the projection screen surface as the front panel of the SN3308 – the design is patent pending. It can put image pixels right to the edge of the sheet metal bezel, providing a nine square inch display image in a three-inch square case. This design is what makes a large image area possible. Is the display readable in direct sunlight? Yes. What feeds the SN3308 display? Display information is fed from a wide variety of instruments and remote data sources, selected with a set of easily accessed buttons surrounding the display. The SN3308 gets its heading data from a flux gate or DG, and nav data from a VOR, GPS, Loran, ADF, DME or marker beacon. It can also display data from a remote Stormscope (WX-500 only). Is the SN3308 a GPS? No. The SN3308 receives data from a panel-mounted Loran or GPS. Is it a complete "compass system"? No. The SN3308 requires an external fluxgate compass and remote gyro, just like most mechanical HSI‟s. The combination of these devices with the SN3308 forms a slaved compass system. Was the SN3308 designed as an HSI or a moving map display? The SN3308 is designed as a multi-purpose navigation display. An HSI presentation has proven to be an excellent way to visualize course intercepts, and a moving map is ideal for overall situational awareness. Combining them into a single display provides the best of both worlds. Why does the SN3308 show the Marker Beacon and GPS annunciators? Bringing key pieces of navigation information to one place was a major design goal of the SN3308. It improves the pilot‟s visual scan and improves safety. Bearing Pointers What are the SN3308 Bearing Pointers (RMI)? A bearing pointer sits on the outside of the compass rose and can be selected to any navigation radio in the aircraft, including the GPS. The Bearing Pointer always points directly to the navigation source and gives a pictorial view of where the station/waypoint is located no matter what your heading. Are the SN3308 bearing pointers different from my free-standing RMI? The SN3308 provides two independent bearing pointers which can be connected to VOR, ADF, or long-range nav (GPS or Loran) inputs. Most external RMI‟s are restricted to VOR or ADF only. The SN3308 pointers are much more functional than an external RMI because the pointers are superimposed on the primary display, showing pictorial station location and passage at all times. Why is this feature important? A superimposed bearing pointer is one of the most useful tools in the cockpit. For instance, if you are flying an ILS, a bearing pointer can be selected to point to the LOM tuned by the ADF receiver. It will stay lined up with the course pointer when you are on course and rotate 180 degrees at station passage. Or, the GPS can be selected on the pointer which will sequence the pointer to each point in the approach including the destination airport. What other information is available from the BRG POINTER feature? The SN3308 displays the digital bearing TO each selected bearing source and distance in nautical miles. Glideslope and DME Does the SN3308 have a Glideslope display? Yes. When an ILS is tuned on the NAV receiver, the Glideslope Pointer is added to the display. This appears on the right side of the display and also as a cross- pointer in the display center when the 360° view is selected. What are the DME capabilities? The SN3308 shows distance-to for NAV sources from the DME or GPS sources from the GPS serial data. This information shows in the primary (upper left) area if the selected receiver is the primary navigation source, and/or in the bearing- pointer areas at the lower left or right. What DME's are compatible? The SN3308 will display DME data from KN63, KN62/64, DME-451 and other DME‟s. With software version 1.33, support has been added to accept ARINC- 568 data from DME‟s such as the Collins DME-40. The Narco DME receivers are not compatible. I have a King KN63 DME. Must I keep my KDI572 indicator? Yes. The KDI572 is more than an indicator – it performs the master channeling and timing functions for the DME system and must be retained. Can I connect a DME with dual Garmin GNS430s? Note that the SN3308 uses the same ports for both ARINC 429 and King serial digital DME data. With a single GNS430 connected, one input port remains available on the SN3308 for a DME input. With dual GNS430s both connected as primary nav sources, a digital DME such as the KN62 or KN63 cannot be interfaced. An older analog-style DME may still be interfaced in this situation, however. Moving Map What does the MAP function do? The SN3308 map displays waypoints supplied from your GPS receiver flight plan data. The SN3308 will also display airports, runway diagrams, VORs, NDBs, intersections and special-use airspace from its own internal Jeppesen database. In addition, the SN3308 will overlay BFG WX-500 Stormscope data on the map data. What happens in VOR Mode? When turned on, the map data is overlaid on the display regardless of which nav source is selected. As long as position data is being received from an LNAV (GPS or Loran) receiver, the map can be displayed. Does the SN3308 have an internal database? An internal database has been available since mid-November 1999. This is a Jeppesen database, and allows the display of nearby airports, navaids, and intersections regardless of the type of LNAV receiver used. The map also displays special-use airspace (Class B & C, MOAs, Restricted, Prohibited, and Warning). All units shipped prior to this release are eligible for a free upgrade to this new map/database software. The only requirement is that the SN3308 be at hardware status "MOD 1" or "MOD 2". Units shipped from the factory after mid- March 1999 are at this hardware level. Older units will be modified at no cost, but must be returned to the factory. Turn-around time is generally 3-4 days. Please contact the factory at 760-727-4900 before sending in the unit to ensure a quick turn-around. If your SN3308 is at MOD 1 or MOD 2 hardware level, the map/database is a software-only upgrade which can be downloaded from this website. Owners of older, pre-MOD 1 units should return their SN3308s to the factory for the complete hardware/software upgrade at no cost. Does the SN3308 show highways and rivers? No. The GPS waypoint data shows only flight plan waypoints. The internal Jeppesen database only includes standard navigation data such as airports, navaids, and airspace features. It does not include ground-mapping data. Is an International Database available? Yes. There are currently two database variants: ALL_AMERICAS which covers North and South America, Australia and New Zealand, and EUR_ASIA which covers the entire world EXCEPT for North and South America. How is the database installed? The database is uploaded from a PC through one of the SN3308 serial ports through a jack located on your aircraft panel. How often are updates required for the Internal Database? There is no requirement for updates, since the map display is not used for primary navigation. They are available on the normal Jeppesen 28-day cycle through our Web site. Note that flight plan waypoints displayed from your IFR certified GPS receiver are downloaded from the receiver and are always current. GPS Is the Garmin GNS 430 compatible? Yes. Sandel and Garmin have worked together to create an extremely simple interconnect scheme using the ARINC 429 digital data bus. A single GNS 430 interfaces to an SN3308 with a total of only four wires! (A dual GNS 430 configuration may require a small relay, but is still an extremely simple interface.) All VOR, ILS, GPS and map data, as well as annunciators, flags and switching commands are handled via the ARINC 429 bus. Both the GNS 430 and the SN3308 require updated versions of software to support this interconnect. The SN3308 must be at hardware revision MOD 1 or later and software revision V1.30 or later. All SN3308s delivered after mid-March 1999 are at these revision levels. Older units will be upgraded free of charge but must be returned to the factory for the MOD1 upgrade. Contact Sandel at 760- 727-4900 for details. With the ARINC 429 interface, nav source selection can be made from either the SN3308 or the GNS 430. Pressing the NAV button on the SN3308 will command the GNS 430 to switch between VOR/LOC and GPS. Likewise, pressing the CDI button on the GNS 430 will change the nav display on the SN3308. The map presentation on the SN3308 will include waypoints sent from the GNS 430. It will NOT include topographic features such as roads, water or railroads. A complete description of the SN3308 / GNS430 interface is also available. Note that the SN3308 uses the same ports for both ARINC 429 and King serial digital DME data. With a single GNS430 connected, one input port remains available on the SN3308 for a DME input. With dual GNS430s both connected as primary nav sources, a digital DME such as the KN62 or KN63 cannot be interfaced. An older analog-style DME may still be interfaced in this situation, however. Does the SN3308 work better with any one GPS System (ie. KLN 89, II Morrow, or Garmin 155)? The SN3308 works well with all of these units. When using an ARINC 429- capable receiver such as the Garmin 155 or KLN-90B, these units send out data on nearby waypoints in addition to flight-plan waypoints. Will it work with the Apollo GX60? Yes. The entire Apollo GX-series line is compatible. Does it work with the Northstar M-3? Yes. Northstar support was added in Version 1.12 of the software, released 1/2/99. The latest version of software is always available for downloading from this site. Is the Garmin 195 with RS 232 output compatible? No. At the present time, the SN3308 does not accept NMEA data from any handheld GPS receivers. Does it serve as remote annunciator panel for a GPS receiver? Yes, the SN3308 displays all the required annunciators for most models of GPS receivers. It also provides the remote switch inputs required for some models of IFR GPS, such as APPR ARM and OBS/LEG. Can the SN3308 replace the GPS annunciator? Yes, the SN3308 can replace the annunciator/switch panel used in GPS installations. It can also control the nav source selection relays commonly used in these setups. Will the GPS automatically drive the course pointer? Yes, this feature is called "auto-slew". When enabled, it causes the HSI course pointer to automatically rotate to the current desired track being sent by the GPS. This eliminates the messages from the GPS saying "turn course pointer to xxx" at each new wayoint. The auto-slew feature is available from any long- range nav receiver (loran or GPS) currently supported by the SN3308. Gyros and Autopilots Will it work with a KCS-55 compass system? Yes. The SN3308 works with the KMT112 fluxgate and the KG102 gyro. It can replace the KI-525a indicator, or the KI-525 indicator can be retained and the SN3308 can be slaved to it. What kind of remote DG's can be used with the SN3308? The SN3308 has been successfully interfaced with Collins, King, Bendix, Honeywell, S-TEC, Mid-Continent and Aeronetics remote DG‟s. Also, the SN3308 can accept magnetic heading information in ARINC 429 low-speed format. Can a panel-mount DG be used to drive the SN3308? A self-slaved panel-mount DG can be used as a source as long as it has a bootstrap output to drive the SN3308. A non-slaved panel mount DG (such as Sigma-Tek) with a bootstrap can be used but only as an unslaved system, where a flux gate will not be used. Can the gyro be vacuum-driven? Yes. A slaved vacuum DG or remote gyro with a bootstrap output can be used. Is it compatible with STEC Autopilot 55 or 65? Yes. It is compatible with most known autopilots. What autopilots are compatible? Any autopilot which can interface with a KI-525 indicator or Synchro type indicator such as a Collins PN101, Bendix IN831, etc. should be compatible. This includes King, STEC and Century autopilots. Does it work with a Century 3 autopilot? Yes, with the addition of several small isolation transformers installed between the 1C388 radio coupler and the SN3308. These transformers are available from electronics supply houses for a total cost of about $10. Please see the installation documentation for details. Does it work with a Century-IV autopilot? Yes, with either the DC or 5KHZ AC version. How does autopilot take information from the SN3308? The SN3308 provides course and heading datum signals to the HSI. The OBS knob and HDG knob work with the autopilot in the same way as with a conventional HSI. Nav Radios Can it interface with the Collins Proline or the King Gold Crown? Yes, both the Collins VIR-30A and the ARINC 568 DME used in the Gold Crown line are supported as of software version 1.33, which was released on 5/19/99. Will the KNS 80 show waypoints or VOR only? Will the KNS 80 work in RNAV mode? Will the VOR drive input from a KNS 80? The SN3308 will receive standard VOR signals from a KNS80. However, the KNS80 does not provide data on RNAV waypoints when it is used in RNAV mode. Also, the KNS80 does not provide DME data in either VOR or RNAV mode so DME data will not be displayed. Does the SN3308 need a Nav converter between it and the NAV receiver? The SN3308 uses composite nav signals only for the RMI bearing pointers. A nav converter such as a King KN72, Century 1C707, or a nav receiver with a built-in converter such as the KX-165 is needed to generate the left-right deviation signal for the VOR and Localizer. Weather Will it work with a Stormscope? The SN3308 displays lightning data from the WX-500 Stormscope remote sensor ONLY. It does not interface to a WX-1000, 1000+ or 950. It also does not interface to earlier Stormscopes like the WX-8 or WX-10. Will it work with a Strikefinder? No. The Insight Strikefinder contains its own display and does not provide a serial data output. Does the SN3308 work with Radar? No, there are no radar interfaces available. Installation & Service Does my installation require a Nav switching relay? Yes, this relay is used to switch the L-R and Flag signals to both the SN3308 display and the autopilot. If no autopilot is used a switching relay may not be required. My GPS requires a resolver, does this require a switching relay? If your GPS receiver uses ARINC-429, then you will not have to switch the resolver signals – the course data is transmitted digitally. Check with your dealer/installer. The KI-525 is a non-standard cutout size. How does the SN3308 install in this hole? Sandel can supply a KI-525 Bezel Adapter which is used when the SN3308 is replacing an existing KI-525. The KI-525 is slightly larger than the standard ARINC cutout and has mounting screws which do not line up with the standard hole pattern. The Bezel Adapter covers the excess area and provides a neat, finished appearance. How often is the projection lamp replaced? The projection lamp must be changed annually or after 225 hours of use. The lamp can be replaced by any avionics technician. Replacing Existing Instruments Can I replace my existing HSI with the SN 3308? Yes. Your installer can adapt the existing HSI wiring to the SN3308 and add additional wiring for the unique functions of the SN3308 such as GPS interface, marker beacons, ADF, or Stormscope. Can the SN3308 be used as a replacement for the King KCS 55? Yes. It works with the KMT112 fluxgate and the KG102 gyro. It can replace the KI-525 indicator. Is the SN3308 electric? The SN3308 is electric. The remote gyro connected to it may be vacuum, pressure, or electric. I do not have an HSI. What do I need to have to install a SN3308? You would need to install a remote DG and fluxgate. Can we replace an existing KPI 553 or other four-inch instrument? Yes. Physically, the KPI-553 is four inches and the SN3308 is three inches. The SN3308 can be mounted using an installer-fabricated cosmetic mounting plate. FAA Approvals and Certifications Is the SN3308 TSO'd? Yes. It is certified to TSO-C113, “Airborne Multipurpose Electronic Displays” and is approved as a PRIMARY display. What STC's are available? Sandel Avionics has received an FAA supplemental type certificate (STC) approval for the SN3308 installed in a Beech F33A Bonanza. This STC is the certification basis not only for Bonanzas but also for follow-on installations in other aircraft. The FAA Flight Standards Office has issued a memorandum which specifically states that the SN3308 is eligible for field approval without the need for an airframe-specific STC. What environmental standards does the SN3308 meet? The SN3308 meets or exceeds all applicable RTCA/DO-160C requirements for such environmental factors as temperature, shock, humidity, vibration, lightning and RF fields. Demonstrations Are demonstrations available? How can I see one? Demonstrations are given at many major aviation shows and events. Demonstrator units are available to all U.S. avionics dealers. Please contact the Sandel Sales Department to be advised of demonstrations that will be conducted in your area. Price, Availability and Warranty What's the cost? Where can I buy one? Unit price is $9,495 plus installation, and it is available now from most U.S. avionics shops. Installation costs vary, depending on your aircraft. Contact your favorite avionics dealer for details or take a look at our dealer locator for the name of a dealer near you. If you do not already have an HSI with a remote DG there may be additional costs for the remote DG and flux gate. What is the warranty? One year parts and labor.