Quote Originally Posted by Meria2304 View Post
There are 2 critical errors in the collected data, which made it hard for me to figure out the correct thing.

Sector 136 (F) is discovered via 135 (E)
Sector 137 (G) is discovered via 134 (D)

This information is displayed partly correct on another website, and even there it is partly wrong.
I wasted weeks farming F for discovering G but nothing happened, so I changed routes and D did the magic trick.
My larger post above is my own personal experience only. I only do single destination runs. I can absolutely confirm that I unlocked (F) from (D), and (G) from (F) as I posted. Other posters below my edited post independently verified this before I did as well.

However, your post is confusing... Those aren't sector numbers, they're the sub level requirement. (D) is 136, (E) is 137 (F) is 138, and (G) is 140, as described in-game on the Navigational Charts "Voyage Details" window.

I think that might be the root of the confusion.