When performing the Propeller Descent, Tails stops up while in midair and lunges himself straight downwards in a skydiving-like fashion on any target below him.
In gameplay, this move is useful for reaching targets that appear below Tails just as he flies over them. Additionally, the move will not cancel the momentum Tails receives from the Boost Mode. Unlike other Stop 'n' Slam maneuvers however, the Propeller Descent does not let Tails damage foes in his flight path, leaving him vulnerable to enemy collision. Like most of Tails' other Mid-Air Trick Actions, this move likewise tends to make Tails lose momentum when he lands. The Propeller Descent can also only be pulled off after Tails has been launched into midair by gimmicks like the Spring or Ramp.
Sonic Advance 2
The Propeller Descent first appeared alongside the other Stop 'n' Slam maneuvers in Sonic Advance 2. To perform the Propeller Descent in gameplay, the player must press down on and the R Button at the same time after being launched into midair by gimmicks.
Sonic Advance 3
In Sonic Advance 3, the Propeller Descent is both Tails' Stop 'n' Slam maneuver and one of his Special Actions. In this game, Tails can only use the move when having Sonic the Hedgehog as his partner. To use the Propeller Descent in gameplay, the player has to press up on and the R Button at the same time after being launched into midair by gimmicks, just like in Sonic Advance 2.