The space doors are usually closed, and are replaced with a force field when a shuttlecraft is about to land or to be launched. This forcefield can be penetrated by the shuttlecraft itself, while it prevents decompression of the shuttlebay.
Deep Space 9's landing pads provide a similar storing location for small starships such as Danube-class runabouts, Ferengi shuttles and Romulan shuttles. (DS9: "Emissary", "The Magnificent Ferengi", "In the Pale Moonlight")
- Star Trek V: The Final Frontier
- TNG: "Cause and Effect"