Scenario 4: What is Magnetic Variation (Declination) and why is it important for navigation?

Question: Scenario 4: What is Magnetic Variation (Declination) and why is it important for navigation?

Answer options:

• It is the annual change in Earth's magnetic field, important for long-term RPAS storage. ✅ It is the angular difference between true North and magnetic North, important for accurate compass navigation.
• It is the deviation of the compass needle caused by the RPAS's electrical systems, important for calibration.
• It is the difference in altitude display between GPS and barometric sensors, important for flight planning.

Correct answer: It is the angular difference between true North and magnetic North, important for accurate compass navigation.

Explanation: Magnetic variation is the difference between true north and magnetic north. RPAS pilots using magnetic compasses for navigation must account for this variation to accurately determine their true heading. The correct answer is "It is the angular difference between true North and magnetic North, important for accurate compass navigation.". This capacity-fill scenario 4 reinforces the same competency for the rpas-advanced bank and follows the certified explanation standard.