Instrument Flight 2
Questions relating to GPS and GPS navigation
Sections: PA.VI.B.K2
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1. What is a consideration when using a hand-held GPS for VFR navigation?
Answer (B) is correct. (FAA-H-8083-25B Chap 16) While a hand-held GPS receiver can provide excellent navigation capability to VFR pilots, position accuracy may degrade without notification.
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2. The Global Positioning System is
Answer (C) is correct. (FAA-H-8083-25B Chap 16) The Global Positioning System (GPS) is a satellite-based radio navigation system.
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3. Which of the following is a true statement concerning the Global Positioning System?
Answer (B) is correct. (FAA-H-8083-25B Chap 16) Navigating by GPS must be integrated with other forms of electronic navigation as well as pilotage and dead reckoning.
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4. If Receiver Autonomous Integrity Monitoring (RAIM) capability is lost in-flight,
Answer (C) is correct. (AIM Para 1-1-17, FAA-H-8083-25B Chap 16) Always check to see if the unit has RAIM capability. If no RAIM capability exists, be suspicious of a GPS displayed position when any disagreement exists with the position derived from other radio navigation systems, pilotage, or dead reckoning. If RAIM is lost during flight, the pilot has no assurance of the accuracy of the GPS position.
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5. How many Global Positioning System (GPS) satellites are required to yield a three-dimensional position (latitude, longitude, and altitude) and time solution?
Answer (B) is correct. (AIM Para 1-1-17) GPS satellites broadcast radio signals that are decoded by a receiver in order to triangulate a three-dimensional position by calculating distances based on the amount of time it takes the radio signals to reach the receiver. At least four GPS satellites are required to yield a three-dimensional position (latitude, longitude, and altitude) and time solution.
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