Originally posted by wannabe pilot
He could have possibly just exited the runway on a high-speed exit. I’m not sure if your supposed to still be using reverse thrust once you’re on the taxiway, but I see Ryanair do it all the time at STN.

I think you’re right, he’s probably exiting at a high-speed exit off the runway. I would say that because the ground spoilers are still in the up position which would indicate a high wheel speed. Once, his wheel speed drops below a set number, the spoilers would stow back down.

As for the reversers, even though an airplane has left the runway some crews will leave the buckets deployed without running up the engines for additional braking. Using the reversers has 2-steps; first you deploy them, second you add thrust. So leaving the engine the process is reversed; you reduce the engine thrust to idle, then you stow the buckets. Depending on the crews preference, some will leave the engines at idle but leave the buckets out.

Airlines don’t recommend using thrust reversers at lower speeds because it increases the chances of FOD injestion. The exhaust gases are striking the ground, stirring up what ever junk is laying on the ground. With the engines spooled up with the reversers open that “junk” is more likely to be sucked into the engine. The risk for that is minimal when just the buckets are out and the engine is at idle.

On some biz jets you might see them at times taxi with one of the thrust reversers deployed. They do this to help with brake temps when they are at a low weight. If you are light enough, even idle thrust can get you moving which requires more brake use which in turn raises the brake temperature. To help with that, they’ll taxi with one reverser deployed for the drag and to lower the thrust vector.