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The maximum endurance condition is obtained at the point of minimum power required since this would require the lowest fuel flow or battery to keep the sUAS in steady, level flight. Maximum range condition occurs where the proportion between speed and power required is greatest.

It is the responsibility of the remote PIC to use the most current weight and balance data when planning a flight and operating the sUAS.

The angle of attack is the acute angle between the relative wind and the chord line of the wing.Answer (B) is incorrect because there is no specific aviation term for this. Answer (C) is incorrect because this is the definition of the angle of incidence.

Without a GPS or manufacturer performance data, you can determine speed by timing the ground speed of the sUAS when it is flown between two or more fixed points, taking into account wind speed and direction between each point, then noting the power settings of the sUAS to operate at or less than 87 knots ground speed. This is a form of dead reckoning.Answer (B) is incorrect because pilotage will help with navigating the Sectional Chart but cannot be used to determine ground speed. Answer (C) is incorrect because the wind triangle requires that you know true airspeed to determine ground speed; without instrumentation installed on the sUAS you won't have that information.

Unmanned aircraft performance can be decreased due to an increase in load factor when the aircraft is operated in maneuvers other than straight-and-level flight.