Someone

public OnPlayerEnterVehicle(playerid, vehicleid, ispassenger)
{
printf("OnPlayerEnterVehicle(%d, 497, %d)", playerid, vehicleid, ispassenger);
 if (vehicleid == 38 || vehicleid == 39 || vehicleid == 40){
if (ispassenger == 0){
new Float:gPlaneX[MAX_PLAYERS];
new Float:gPlaneY[MAX_PLAYERS];
new Float:gPlaneZ[MAX_PLAYERS];
    // Do something if they are driver
        }
        else{
SetPlayerPos(playerid,1.6127,34.7411,1199.0);
SetPlayerInterior(playerid,1);
    // Do something if they are passenger
        }
        }
return 1;
}