FAA Private Pilot Airplane (PAR)Navigation and Flight PlanningMedium
A pilot is conducting an emergency diversion. The most efficient method for determining a new magnetic course to an alternate airport, without extensive calculations, would be to use:
- AA flight computer (E6B) for a full wind correction calculation.
- BVisual landmarks and pilotage to estimate the direction.
- CA VOR receiver tuned to the nearest VOR and a compass rose on a sectional chart.
- DA GPS unit with direct-to navigation capabilities.
Show answer & explanationAnswer & explanation
Correct answer: D. A GPS unit with direct-to navigation capabilities.
In an emergency diversion, time is critical. A GPS unit with 'direct-to' functionality can quickly and accurately provide a magnetic course (or track) and distance to an alternate airport without manual calculations or external references, making it the most efficient method.
Why the other options are wrong
- A. Incorrect. While accurate, an E6B calculation is time-consuming and less efficient than GPS in an emergency.
- B. Incorrect. While pilotage is a fundamental skill, relying solely on visual landmarks for a precise magnetic course to an unfamiliar alternate airport is less accurate and efficient than GPS for navigation.
- C. Incorrect. Using VOR and a sectional chart compass rose requires several steps and visual interpretation, which is less efficient than direct-to GPS.
GPS Direct-To Navigation
A common GPS function that allows a pilot to quickly select a destination and receive immediate guidance (course, distance, time) to that point.
- Provides a direct, straight-line course to the selected waypoint/airport.
- Extremely useful for diversions or unplanned route changes.
- Displays magnetic course, distance, and estimated time en route.
Memory trick: For quick diversions, GPS 'direct-to' is your best solution.