Test yourself: 5 hard theory questions, free Airspace, weather, regs and aerodynamics, FAA-style — instant score, every answer explained. No signup.
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An Inertial Reference System (IRS) determines position by:
A
Receiving GPS signals
B
Integrating accelerometer data over time from a known starting position
C
Measuring radio signals from ground stations
D
Using magnetic compass data
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See where you stand: 5 hard questions, instant score, every answer explained.