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GPS Quiz 

How well do you know your IFR certified GPS?  Take this quiz!

Note: This quiz is current as of October, 2004.

 

1. Which of the following is true, regarding substitution of Terminal or Approach approved non-WAAS IFR GPS for ADF and/or DME?
a) When above FL240, you cannot substitute GPS for DME.
b) You are not required to have a current database to substitute GPS for ADF and/or DME.
c) You can substitute GPS for ADF when ADF is to be used as the principle instrument approach navigation source.
d) If an alternate airport is required, and the available approach(es) rely on ADF or DME, the aircraft must be equipped with DME or ADF avionics as appropriate.

2. How would you substitute GPS for DME when the DME source is not in the database? (i.e., a Localizer DME)
a) Use the distance from the airport datum.
b) Use a named DME fix as the active waypoint to identify an unnamed DME fix on the same course and from the same DME source as the active waypoint.
c) You are not authorized to substitute GPS for DME when the DME source is not in the database.

3. What should you do when you get a RAIM failure annunciation while executing a GPS Instrument Approach?
a) You may continue the approach for five minutes if the RAIM failure occurs after the FAWP.
b) If the RAIM failure occurs prior to the FAWP, you should proceed to the MAWP and execute a missed approach.
c) Nothing, it doesn't matter, and even without RAIM, GPS is more accurate than conventional land based navigation systems.

4. In a TAA (Terminal Arrival Area) is there ever a PT required?
a) Yes, sometimes, for instance, in a TAA with the left and/or right base areas eliminated.
b) No, the whole idea of a TAA is to eliminate the procedure turn.
c) This is a trick question, a TAA has nothing to do with instrument approach procedures.

5. What is the difference between a fly-over and a fly-by waypoint?
a) There is no such thing a a fly-by waypoint.
b) All waypoints that are a part of a GPS approach are fly-over waypoints; user waypoints and non-GPS approach waypoints are fly-by waypoints.
c) A fly-by waypoint requires the use of turn anticipation to avoid overshoot of the next flight segment.  A fly-over waypoint precludes any turn until the waypoint is overflown and is followed by an intercept maneuver of the next flight segment.

6. You're planning an IFR flight to Bridgewater, VA (VBW), and the area forecast indicates that an alternate airport must be included in the IFR flight plan. The nearest airport with an ILS is Shenandoah Valley Regional (SHD).  (Click here to access the approach charts for SHD on AOPA's website.)  You are equipped with dual Garmin 430's, but no ADF.  Can you legally file SHD as an alternate (assume the weather at SHD is forecast to be above alternate minimums)?
a) Yes, as long as the database and 30-day VOR check are current.
b) No, you must be ADF equipped to file SHD as an alternate.
c) Yes, as long as as there is sufficient RAIM.

The following questions are specific to the Garmin 400/500 series GPS receivers.

7. How would you do a RAIM prediction?
a) From AUX page 2, select RAIM Prediction and enter the destination waypoint,  arrival date, and arrival time.
b) While on the MAP page, press the Menu key, select RAIM Prediction, and enter the destination waypoint,  arrival date, and arrival time.
c) While on the default NAV page, activate the cursor and rotate the outer knob until RAIM Prediction is highlighted and enter the destination waypoint,arrival date, and arrival time.

8. The Garmin 430/530 provides course guidance for the outbound leg of a holding pattern.
a) True.
b) False.

9. The Missed Approach procedure for the ILS or LOC Rwy 13 approach at Allentown/Lehigh Valley Int’l Airport, Allentown, PA (ABE) is as follows: "Climb to 1200 then climbing right turn to 3000 direct ETX VOR/DME and hold."  Upon initiating the missed approach procedure, when would you press the OBS button?
a) Immediately after passing the missed approach waypoint.
b) You don't need to press the OBS button during a missed approach procedure, waypoint sequencing is done automatically.
c) After reaching 1200'.

10. ATC issues the instruction, “fly heading 270, intercept the MXE 180 degree radial and track it inbound”.  How would you do this with the GNS 430/530? (using the GPS receiver, not the VOR receiver)
a) Set the HSI course pointer to 270; then from your present position, enter Direct To MXE and press the OBS button.  As the needle centers, turn to intercept the course.
b) Enter Direct To MXE; press the OBS button and set your HSI to a course of 360. As the CDI centers, turn to intercept the course.
c) Enter Direct To MXE; on the Direct To entry window, move the cursor to the CRS field and enter a course of 180; press enter to activate. As the CDI centers, turn to intercept the course.

11. You're flying the missed approach procedure, and when you reach the missed approach holding fix, the map display on Nav page 2 appeared to rotate 180 degrees.  Why?
a) You forgot to press the OBS button to take the unit out of SUSP mode.
b) You have your map orientation set to "DTK up".
c) You flew an incorrect holding pattern entry.

12. You're flying RNAV (GPS)  22 approach at Georgetown, DE (GED). You're arriving from the northeast and have been cleared to BOYSE and are cleared for the approach. You are not authorized to fly the procedure turn. How do you skip the procedure turn at BOYSE?  (Click here to access the approach chart on AOPA's website.)
a) It depends on which version of the main software your Garmin is running.
b) The Garmin will automatically handle the course reversal for you.
c) You need to activate "vectors to final" to skip the procedure turn.

13. You're flying VOR or GPS-A approach at South Boston, VA (W78). You're arriving from Victor 266 (SBV R236) via the NoPT arrival sector and have been cleared to the South Boston VOR (SBV) and are cleared for the approach. You are not authorized to fly the procedure turn. How do you skip the procedure turn at SBV?  (Click here to access the approach chart on AOPA's website.)
a) Use the same method as in question #12.
b) Go into the active flight plan and manually remove the procedure turn.
c) Press the OBS button prior to reaching SBV.

The following question is specific to the GarminAT CNX80/GNS480 GPS receiver.

14. You're flying the RNAV (GPS) Rwy 6 approach into Wilmington, NC (KILM) with your GNS480 GPS. May you descend to the LNAV/VNAV Decision Altitude of 480'? (Click here to access the approach chart on AOPA's website.)
a) Yes, the GNS480 (and the CNX80 with v2 software) is a WAAS capable GPS receiver, and can be used to fly approaches to LNAV/VNAV or LPV minima.
b) Yes, as long as the correct Baro setting was entered prior to loading the approach.
c) No, the CNX80 does not have the proper certification to fly approaches with vertical guidance.