Wiktionary
gear down
vb. To arrange a system of gear wheels or pulleys etc such that the driven part rotates or moves slower than the driving part
Usage examples of "gear down".
But we'll get the flaps out and gear down and go as slowly as we can, and if I do it right and we're lucky, it'll be like a very hard landing, with a waterfall coming through the door immediately afterward.
This allows the captain to track the gear down if it parts off midstring.
I laid my new gear down on a table, bundled my old gear up on the nightstand, set my sword atop it unsheathed.
At low altitudes with their gear down their engines drank fuel at a gluttonous rate.
If you lose more than two engines and you can't do a goaround with your gear down, crash-land on the dry lake bed.