The Spaceport Trench Tower Key is an Uncommon key item that opens locked doors inside the Trench Towers at Acerra Spaceport. The game doesn’t point you to these doors, and keys often drop far from where they’re used. This guide shows exactly what the key unlocks, how to use it on-site, and practical places to search for one.

What the Spaceport Trench Tower Key unlocks (Acerra Spaceport)

Area Doors this key fits Notes
Trench Towers (Acerra Spaceport) 8 locked doors across the Trench Towers cluster Each tower has 2 locked doors on the first floor and 2 on the second floor.

These doors gate high‑value loot and useful interior routes. The key type matches any of the Trench Tower doors listed above.

How to use the key on-site

  • Travel to Acerra Spaceport and head into the Trench Towers area.
  • Check both floors in each tower; each floor has two locked doors that accept the Spaceport Trench Tower Key.
  • Interact with a locked door to use the matching key type and open it. Repeat at other Trench Tower doors as needed.

Tip: Sweep each tower top-to-bottom so you don’t overlook second‑floor doors. Expect competition, as Trench Towers are a popular loot destination.

How to get the Spaceport Trench Tower Key

  • Scavenging. The key drops from loot containers. Keys are rare, so expect multiple runs.
  • High‑loot zones. Locations outlined in red on the map have the best loot density and increase your odds of finding a key, but they’re heavily contested.
  • Player loot. Eliminating and looting other players is a viable way to acquire keys during extractions or near popular POIs.

Reliable places to look for this key include buildings on the Dam Battlegrounds map such as Ruby Residence and Pale Apartments. Spawns vary by run, but those locations frequently produce Spaceport keys (including the Trench Tower Key).

Note: Keys often spawn on a different map than where they are used. If you find the Trench Tower Key on Dam Battlegrounds, you’ll need to extract safely and bring it to Acerra Spaceport.

Item stats and handling

Property Value
Rarity Uncommon
Weight 0.25 kg
Stack size 1
Sell price 100 credits

Given its low weight, it’s easy to carry while you route to Spaceport. Whether you sell it or save it depends on your current goals and stash needs.

Quest usage

The Spaceport Trench Tower Key is required for the Turnabout quest. Keep at least one in reserve if you’re progressing that objective.

Don’t mix it up with other Spaceport keys

Spaceport has several different keys with similar names. Use the table below to keep them straight:

Key What it unlocks
Spaceport Trench Tower Key Trench Towers doors (8 total across first and second floors)
Spaceport Control Tower Key Control Tower in Spaceport
Spaceport Container Storage Key Container Storage area in Spaceport
Spaceport Ground Control Key Ground Control Tower in Spaceport
Spaceport Outskirts Bunker Key Outskirts Bunker on Spaceport
Spaceport Warehouse Key Shipping Warehouse in Spaceport

If your key name doesn’t include “Trench Tower,” it won’t open Trench Tower doors. Check the item name in your inventory before heading out.

Key takeaways

  • The Spaceport Trench Tower Key is used only at Acerra Spaceport’s Trench Towers, where it fits eight doors in total.
  • Search by scavenging in high‑loot areas and contested POIs; Dam Battlegrounds buildings like Ruby Residence and Pale Apartments are dependable spots to check.
  • Plan your route: extract with the key from its spawn map, then bring it to Spaceport for your Trench Towers run or Turnabout progress.