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WFDE PREDICTION PROgRAM INSTRuCTIONS
WAAS RAIM/FDE PREDICTION PRORAM g INSTRuCTIONS
NOTE: The WFDE Prediction Program is part of the Garmin Trainer and Route Planning software programs. The
required software and instructions are available via the Garmin website at www.garmin.com.
NOTE: The WFDE Prediction Program requires an internet connection to provide access to current almanac, GEO
almanac, and configuration files.
NOTE: These instructions assume the user has experience operating
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WFDE PREDICTION PROgRAM INSTRuCTIONS 1 OVERVIEW The following sections provide an overview of the WFDE Prediction Program and guidelines for when it should be used. Section 1.2 provides a comprehensive set of guidelines for when a WFDE prediction is required that is applicable to any installation of a Garmin WAAS enabled unit. Section 1.3 provides specific guidance for GTN 6XX/7XX installations. 1.1 FAul T DETECTION AND ExCluSION (FDE) The GARMIN G1000 with GIA 63W, the GNS480/CNX80, and
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WFDE PREDICTION PROgRAM INSTRuCTIONS 1.2 DETERMININg WhEN A WFDE PREDICTION IS REIRED qu The WFDE Prediction Program determines whether the GPS constellation is robust enough to provide a navigation solution for the specified route of flight. As required (dependent upon type of flight plan, GPS Software (SW) version, and GPS antenna), prior to departure the operator must use the WFDE Prediction Program supplied with the applicable trainer or route planning software to demonstrate that there
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WFDE PREDICTION PROgRAM INSTRuCTIONS * Approved refers to antennas listed in the applicable Installation Manual (Table 2) that allow the Garmin WAAS enabled unit with GPS software v3.XX or later to meet the TSO-C145a/C146a or TSO-C145c/C146c requirements without requiring the operational limitations specified in the applicable Installation Manual. Unapproved refers to antennas listed in the applicable Installation Manual (Table 2) that allow the Garmin WAAS enabled unit (regardless of GPS Sof
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WFDE PREDICTION PROgRAM INSTRuCTIONS 2 IDENTIFYIN g gPS SOFTWARE VERSION The GPS software version used in the Garmin WAAS enabled unit must be determined prior to performing the WFDE prediction. The GPS SW version may be a factor in determining if a WFDE prediction is required. 2.1 NS 400W/500W S g ERIES PRODuCTS Identifying GPS Software Version of a GNS 400W/500W Series product: 1) Turn the COM power/volume knob clockwise to turn the unit on. 2) The Main and GPS software version page (Figur
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WFDE PREDICTION PRORAM g INSTRCTIONS u 2.3 1000 g WITh gIA 63W Identifying GPS Software Version of a G1000 with a GIA 63W : 1) With the G1000 in normal mode, use the FMS Knob on the MFD to select the AUX - System Status Page (Figure 3). 2) Note the GPS Software Version. GPS Software Version Figure 3 System Status Page 2.4 TN 6 g xx/7xx Identifying GPS Software Version of a GTN 6XX/7XX: 1) Apply power to turn the unit on. 2) From the Home page, touch the System key to reach the System func
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WFDE PREDICTION PROgRAM INSTRuCTIONS 3 RNNIN u g TE FDE PREDICTION PRO h RAM g Trainer and route planning software for WAAS-certified Garmin products include a WFDE Prediction Program to meet the FDE requirements for GPS as a primary means of navigation for Oceanic/Remote operations (reference FAA AC 20-138A Appendix 1). To use the WFDE Prediction Program, begin by entering the intended flight plan into the applicable Garmin Trainer software or the Garmin Route Planning software. The WFDE P
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WFDE PREDICTION PROgRAM INSTRuCTIONS Figure 6 Possible Update Messages 4) The WFDE Prediction Program window appears (Figure 7) listing the flight plan waypoints, selected antenna, and the current date/time as the departure time. It is important to verify that the displayed route is correct before proceeding with the prediction. Reference Table 3, and verify the correct Garmin part number (006-A0154-0X) appears at the top of the screen for the applicable product. If the part number is inc
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WFDE PREDICTION PROgRAM INSTRCTIONS u Garmin Part Number Applicable Product 006-A0154-01 G1000 with GIA 63W 006-A0154-02 GNS 480/CNX80 006-A0154-03 GNS 400W/500W 006-A0154-04 Other Garmin Series 006-A0154-05 GTN 6XX/7XX Series Table 3 5) Make sure that the selected antenna and software version option matches the antenna and GPS software installed on the aircraft that will fly the flight plan. To change the selected antenna and software version option, click the down arrow next to the “Antenna”
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WFDE PREDICTION PROgRAM INSTRuCTIONS 6) To change the departure date, click the down arrow next to the “Date (UTC)” field. A calendar window appears. Click the left or right arrows to select a different month (if desired), then click the desired date. 7) To change the departure time, click the hours, minutes, or seconds fields next to the “Time (UTC)” field. Click the up or down arrows (or type in desired time) to change the displayed time. 8) To change the planned route type, average gro
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WFDE PREDICTION PROgRAM INSTRuCTIONS Figure 8 Flight Setup Window 9) To deselect satellites from the setup window, click “De-select Satellites,” then clear the box adjacent to any satellite that should not be used in the prediction (Figure 9). WAAS satellites are not listed in the Satellite Selection Window as RAIM and FDE availability are not predicated on the availability of WAAS satellites. However, WAAS satellites are required to conduct LP, LPV, and LNAV/VNAV approaches. Always check
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WFDE PREDICTION PROgRAM INSTRuCTIONS Figure 10 Almanac Warning NOTE: To ensure accuracy of results, the almanac data used for the RAIM and FDE predictions must be recent. If the information is out of date, the WFDE Prediction Program will automatically prompt the user to update the almanac data (Figure 10). An internet connection is required to use this feature (see following instructions). 10) To calculate RAIM, FDE availability, and WAAS satellite availability; select the Calculate but
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WFDE PREDICTION PROgRAM INSTRuCTIONS GPS Prediction RAIM Prediction FDE Prediction Results Results Results Displays the Maximum FDE Outage Only (may be other FDE outages) Displays any Predicted GPS or RAIM Outage Information Displays the Leg of Route Where This Prediction Outage Occurs is Based on the Displayed Estimated Ground Speed for Outage Arrival Time ±15 Min. May Differ from Entered Ground Speed, as Multiple ETA Calculation Predictions are Calculated, Uses Ground Speed
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WFDE PREDICTION PROgRAM INSTRuCTIONS 4 INTERPRETIN g TE FDE PREDICTION RES h ul TS The GPS/FDE Availability Results screen provides either a “GO” or “STOP” status for the GPS, RAIM, FDE, LNAV RAIM, and LNAV/VNAV & LPV minima availability. A yellow flag is a possible result for an FDE prediction for a non-Oceanic prediction (see Figure 12). A “GO” status indicates that there are enough satellites available during the flight to meet the requirements of that category. It is possible to have m
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WFDE PREDICTION PROgRAM INSTRuCTIONS Suggestions to change the result of a failed flight plan prediction: 1) Alter the departure date and time. 2) Alter the route of flight. 3) Verify any deselected satellites. It is possible that some satellites unavailable for a previous prediction are now available. 4) Update the almanac, especially if it is more than three months old. 5) Use the correct antenna selection (if “Most Conservative” was used). 6) For Oceanic/Remote operations, determine th
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WFDE PREDICTION PROgRAM INSTRuCTIONS 5 PD u ATIN/C g AN h IN g g AlMANAC AND CONFIRA gu TION FIlES 5.1 AlMANAC, gEO AlMANAC, AND CONFIguRATION FIlES To ensure that each is current, the Almanac, GEO Almanac, and Configuration Files are automatically checked each time the program is started. If the program finds any of these files to be out of date, it will automatically update the file via the internet. A provision has been made to update these files manually, if needed. Manually Updating th
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WFDE PREDICTION PROgRAM INSTRuCTIONS 5.2 ChANIN g g TE h CONFIRA gu TION FIlE The WFDE Prediction Program may be used with several different Garmin software programs. Each program uses a specific configuration file to run the WFDE Prediction Program. If the user has multiple Garmin programs loaded, the user must verify that the configuration file currently in use is correct for the Garmin product that will be used to navigate the flight plan. Generally speaking, most users will not need to
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WFDE PREDICTION PRORAM g INSTRCTIONS u 6 PRINTINg 6.1 PRINTINg TE h PREDICTION RESul TS Use of the “Print” selection on the “File” menu (in the upper left-hand corner) is not recommended, as the complete results of the prediction are not included on the printout. If a printout is desired, use the following steps. Printing the Prediction Results: 1) From the GPS/FDE Availability Results screen (Figure 16), press ALT+PRINT SCREEN to make a copy of the image. Figure 16 Calculation Complete S
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