Ever since the explosions fix at storerobberies a lot of players use the "kamikaze" way to reach it, simply by crashing a plane inside the marker, often launching everyone in the air (thus deathmatching), damaging vehicles and so on. Police side also benefits a lot from this by knocking down everyone + the donation planes have icons allowing to do this nonstop. This is incredibly frustrating and unrealistic and should not be the way the sides are balanced. You can see what happens during an average storerobbery in the video below:
My suggestion would be either making the planes explode, dealing damage to everyone inside the marker (deathmatching) or simply put a rule against crashing like this.