GVC Study Guide 2026

Acute stress narrows attentional focus, impairs cognitive flexibility, and can lead to hasty or poor decisions, a phenomenon known as perceptual narrowing or tunnel vision.

The minimum age for GVC holders is 18 years old. This higher threshold than the open category (16) reflects the increased responsibility and complexity of specific category operations, which often involve commercial clients, public areas, or more complex airspace.

Wind shear is a sudden change in wind speed, direction, or both over a short distance (either vertically or horizontally). For UAS, wind shear can cause sudden uncommanded changes in altitude or position, potentially leading to loss of control, collision with obstacles, or departure from the operational volume. It commonly occurs near buildings, terrain features, and during thunderstorm activity.

Strategic mitigations for air risk are measures implemented at the planning stage, such as restricting operations to airspace with low manned aircraft traffic, coordinating with air traffic services, or applying temporal restrictions. These reduce the probability of a mid-air encounter before the flight even begins.

LiPo batteries can experience thermal runaway — a self-reinforcing overheating reaction that can result in fire or explosion. Charging on a flammable surface dramatically increases the risk of fire damage. LiPo-safe bags or fireproof charging cases contain the hazard if a fire occurs.

The intrinsic Ground Risk Class (iGRC) establishes the initial, unmitigated risk level of the operation to people on the ground. It is determined by the UAS characteristics (size, kinetic energy) and the operational environment (population density). Mitigations can then be applied to reduce this to a final GRC.