Terrance B. Lettsome International Airport lies in the tropics at 18.45° N, 64.54° W, on America/Tortola time (UTC-4). Tropical airports contend with heat and humidity, both of which thin the air and lengthen takeoff runs, and with convective storms that build fast in the afternoon.
Terrance B. Lettsome International Airport has 1 runway. The longest, 07/25, measures 4,642 ft by 89 ft, which puts the field in the regional category: regional jets and turboprops are the natural fit. The surface is asphalt. It is lit for night operations.
Runway 07/25 is aligned roughly north-east/south-west, which is the clearest hint you get about the prevailing wind here: runways are built to face the wind that blows most often, because aircraft take off and land into it. Every runway here shares that north-east/south-west alignment, so a strong crosswind means a crosswind landing rather than a switch to another strip.
At 15 ft the field is effectively at sea level, which is the friendliest case for aircraft performance: maximum lift, maximum thrust and the shortest takeoff runs an aircraft is capable of.