Hatch
A hatch, also known as an access hatch, access panel, access plate, or trapdoor, was a type of access point used to enter or exit one area to another, in many cases for maintenance purposes. It could be opened manually or by remote. 

After  crashed through the surface on Terra Nova and landed several meters below in a cave, the Novan Jamin requested that the door to be opened. But Captain Archer first asked  what could happen if he opened the port hatch of the shuttlepod. Tucker told him that it would be okay so Archer opened the hatch. ()

In August 2151, the main hatch of the Earth Cargo Service freighter  was damaged so the landing party from  had to use the auxiliary hatch of the ship. ()

In September 2152, the Takret captain ordered his soldiers to report to the docking hatch immediately when the ship went into the direction of a plasma eddy. ()

In 2153, Captain Jonathan Archer blew up an outer hatch of the upper port side of  to decompress the maintenance shaft were two Borg-assimilated Tarkaleans tried to sabotage the ship's avionics control system. ()

In 2269, James T. Kirk referred to a door that Spock was being ushered through on the Shore Leave Planet as a trap door. ()

In 2286, after the  crashed in the San Francisco Bay following a successful time warp from 1986, the ship began sinking, Spock blew the bridge emergency hatch, and Admiral Kirk had to stay behind to save George and Gracie, who were trapped in an aquarium. He ordered the rest of the crew to abandon ship, and he further ordered them to "close the hatch." ()

In 2364, after being exposed to polywater due to the collapse of a red supergiant, the crew of the  suffered from polywater intoxication and opened the bridge emergency hatch which resulted in the bridge crew being blown out into space. Those in their quarters froze to death because the sudden loss in pressure affected the ship's environmental system. ()  

In 2369, the hatch of the runabout  had to be powered up with a EPI capacitor before it could be opened. ()

In 2373, Major Kira recounted how she opened fire on a skimmer as soon as the hatch opened and the first Cardassian stepped out. ()

In 2375, Tom Paris cautioned Kathryn Janeway to beware the tricks of villains from The Adventures of Captain Proton, which included trapdoors and secret weapons. ()

Types of hatches 
 Airlock
 Auxiliary hatch
 Core hatch
 Emergency hatch
 Escape hatch
 Flight hatch
 Inspection hatch
 Maintenance hatch
 Trapdoor

External link 
 
Spacecraft components
Architecture