Falling Sand Parkour (Minecraft 1.9)

Scoreboards:
/scoreboard objectives add fallSandTime dummy

Commands:
/execute @e[type=FallingSand] ~ ~ ~ /summon ArmorStand ~ ~-.75 ~ {Invisible:1,NoGravity:1,Marker:1,Invulnerable:1,Tags:["AirSand"],Passengers:[{id:Shulker,NoAI:1,Invulnerable:1,Silent:1,PersistenceRequired:1b,Tags:["AirSand"],ActiveEffects:[{Id:14,Amplifier:0,Duration:1000000,Ambient:1,ShowParticles:0b}]},{id:FallingSand,Block:"minecraft:stick",Data:0,Time:2,Tags:["AirSand",""]}]}
/tp @e[tag=AirSand,score_fallSandTime_min=1] ~ ~-200 ~
/kill @e[tag=AirSand,score_fallSandTime_min=2]
/scoreboard players add @e[tag=AirSand] fallSandTime 1

Additional Command:
/execute @e[type=FallingSand] ~ ~ ~ detect ~ ~-1 ~ sandstone 0 /kill @e[type=FallingSand,r=0]