FSX Narco NS-800 RNAV

Supplement to Pilot's Guide in Word.Doc form is available, any luck it'll be attached to this comment? Ron P.

Narco NS-800 RNAV Pilot's Guide Supplement

(See panel drawing in the documents folder)

( Edit Mode USE HLD VOR RNAV CHK Data Pwr Ident To/From Knob Inner Outer

Indicator ) WP DME PAR Enr/Apr VOR < Cycle Nav Toggle Regions Knob Knob

Nav #2 Auto (Save) - - L H

Load WP Waypoint Table

FSX Version of NS-800 Features

Using the Narco Pilot's Guide PDF file for reference, the FSX controls and reactions will be explained as the airplane is initialized and seen at on power up.

On power up, the NS-800 RNAV is ready, as Nav #1, in the VOR Mode and the knobs control the radio receiver's frequency (as any Nav Receiver would operate). The "knob" control is shown by the "carrot" symbol; "<" shown in the display.

Furthermore, in the VOR Mode, the WP and USE value being the same, the frequency knob changes, effect the receiver's active radio frequency, no need to make the XFR key function. You have direct control of the Nav #1 Receiver, free to select any VOR/VORTAC/LOC.

If the VOR you have active in the NS-800 has DME (VORTAC) capability, the "upper" display area will automatically show you Nav #1 DME information; Bearing FROM, Distance from that VORTAC, aircraft speed and "Time to Station" will be calculated.

"Time to Station" = 99 means no data exists to determine arrival time. Dashed line displays mean signal loss or data is incomplete. Furthermore, ILS signal loss shows dashed lines in this upper display, a "clear field" display means a good ILS signal is received and in use.

VOR/LOC/GS ID-825 RNAV Indicator has been provided, (Narco Gauges.Zip) the NS-800 will work with King/Bendix HSI found in the KNS-81 RNAV Project, both setup as Nav #1.

Front Panel Controls

WP Loaded - initial loaded waypoint will be the last "saved" WP used during the "power cycle" toggle. Unlike the Narco RNAV that starts with WP #1, the FSX version begins with the WP saved in the NS800.TXT setup, mainly for conveyance sake.

< The Data "Carrot" is an important button to know, in that it moves you off a set field

for editing purposes. This key is found on the radio frequency display when the VOR Mode is set. It's normally found on the WP display in the RNAV Mode.

The "carrot" will move off the frequency position in the VOR Mode, to begin waypoint editing, even to reach the WP position, in order to select a memory or "bin" to store your data into.

NOTE: The Data "Carrot" is inhibited from moving off the WP position, if the WP and USE values MATCH, while in RNAV Mode. This protects the RNAV computer while it's in use.

Default carrot position in VOR Mode is the radio frequency. In the RNAV Mode, the carrot defaults to the WP selection position, each time a change is made in modes.

The XFR Button is at the far left, if you want to fly the waypoint or radio frequency

you have displayed on the lower screen area, pushing this button activates that data being displayed. Confirming the action? WP and USE values should now match.

Anytime the WP and USE values do not match, the displayed data is considered in "edit mode" and as soon as you move off the display, to the next WP, etc. the data shown is automatically saved in the Waypoint Table. If you do not cycle the power "OFF" region, the next time you start the aircraft, the older saved data is loaded. Your recent editing activity stays in this flight table only and will be lost if you do not "power cycle" the NS-800.

HLD The DME Button is a feature of the VOR Mode and is for use during a selected

ILS frequency/approach. This feature normally "time shares" the RNAV Computer, using two radio frequencies in the Narco Unit, which degrades the quality of data available for navigation. In this FSX version, there simply are not enough "navs" to accomplish this task, so if you have a second Nav Receiver on board, it's frequency and DME data will be displayed. This button is inhibited in the RNAV Modes! Why? The Narco RNAV computer runs on either "analog" VOR angular conversions or the linear RNAV method. Even the simple PAR part of the VOR/PAR button, disables the HLD Button because the PAR function is a linear computation. Also see pages 8 & 30 in Pilot's Guide.

CHK This unique button works only in the RNAV Modes of the NS-800 system.

While in the Linear Calculation mode, the VORTAC radial data is in use and available for display, by simply pushing this button. At anytime, you can check and see what radial you are on and the distance from the VORTAC to confirm positional orientation.

This button does not work in the VOR Mode, since the normal DME display accomplishes that task. Dashes will be shown if no DME data is sensed on the VOR facility.

Special WP Auto-Load Feature

The Narco NS-800 RNAV for FSX aircraft has ability to pickup instant radial and distance information from a valid VORTAC facility and place it as an "active" waypoint for immediate navigation.

The use of your single mouse control buttons, lets you use both the CHK and XFR buttons to immediately store that data in the current WP being displayed, since the CHK button locks on in FSX. The Narco unit, the CHK button is normally momentary, requiring two fingers to activate.

Example: I am about to take-off from an airport runway that usually has no instrument facility to guide you down the center-line on approach. I have a valid VORTAC radio signal and I have an open waypoint selected up on that frequency, and I am in the "Enroute" RNAV mode, ready to go. I simply pushed the CHK button (which darkens to show it's active) displaying the VORTAC radial and distance. I then touch the XFR button momentarily and the data I saw in the CHK display is now in the waypoint lower data screen.

I then released the CHK button and data for my new "fix" is shown in the DME display too.

Furthermore the WP and USE values match, meaning that "fix" is now my active waypoint.

I haven't even moved on the end of the runway and I have a "fix" to bring me back to this center-line, with the runway heading dialed in on the OBS.

After take-off, I flew out to the VOR and kept a 5 nautical mile range away from my "fix" at the end of the runway. Flying outbound from the VOR on a parallel course to that runway heading, I saw the indicator flag change as I flew abeam to my new waypoint.

I waited for the "key position" DG indication to match the "Bearing TO" my fix and turned a 5 nM base leg. The distance measured by the CDI, below 3 miles on the base leg, I switched over to the APR Mode for a full-scale deflection. As the CDI came in, I turned inbound on the OBS heading to see the runway ahead, which normally does not have a localizer facility for this approach. I was aligned with the centerline very well, with little corrections required for a smooth landing.

This simple activity means a lot in a high-winged airplane, when the runway is blocked out in the turns. Actually, I just made my own RNAV approach on a runway I use a lot.

The Narco NS-800 RNAV has unique features I thought you should check out in your FSX airplanes.

The Pilot's Guide is a very good document to read and any luck, all its features work here?

End of Document