Starbase 621
The Enterprise-D delayed a scheduled stopover at Starbase 621 in order to assist the Caldos colony with its weather-control system. A special jury was to have been convened for arraignment of Gul Dukat on war crimes charges in 2374.
  "Sub Rosa" - TNG. "Waltz" - DS9.
Starbase 718
Location of an emergency conference that Picard attended in late 2364 to discuss the possibility of a new Romulan incursion. The meeting was triggered by the loss of communications with starbases and outposts near the Romulan Neutral Zone, although this was later believed to be due to Borg activity. This was shortly before the Romulans ended a 53-year period of isolationism that had begun in 2311.
After this episode was made, it was decided that starbase numbers shouldn't go much higher than 500.
  "The Neutral Zone" - TNG.
Farspace Starbase Earhart
Starfleet facility where Ensign Jean-Luc Picard spent some time awaiting his first assignment after graduating from the academy. Picard picked a fight with three Nausiccans at the base's Bonestell Recreation Facility, and was nearly killed when one of them stabbed him through the heart.
Named for aviation pioneer Amelia Earhart (1898-1937)
  "Samaritan Snare" - TNG. "Tapestry" - TNG.
Starbase G-6
Starfleet facility near planet Betazed from which Counselor Troi was able to visit her home via shuttlecraft. Starbase G-6 was also located near the Sigma III Solar System, which suffered a serious mining accident in 2364.
  "Hide and Q" - TNG.
Starbase Lya III
Starfleet Command base where Admiral Haden was stationed. Haden advised Picard on the handling of the Romulan defector Alidar Jarok in 2366, although a two-hour transmission delay due to the distance to the Neutral Zone made it difficult for Haden to give timely advice. The Enterprise-D headed to Starbase Lya III following its mission to Angosia III.
  "The Defector" - TNG. "The Hunted" - TNG.
Starbase Montgomery
Planetside facility at which the Enterprise-D underwent engineering consultations on stardate 42686.
  "The Icarus Factor" - TNG.
Starbase Xendi 9
Site to the USS Stargazer NCC-2893 was towed after the Enterprise-D received the old vessel from the Ferengi in 2364.
  "The Battle" - TNG.