[MP2]

Ban them? You just send a message, you don't actually ban them.

Also, omit parachutes from checks as they can get them from aircraft:

if(weap > 0 && Weapon[i][weap] == false)

->

if(weap > 0 && weap != WEAPON_PARACHUTE && Weapon[i][weap] == false)

Also you should change

if(GetPlayerState(i) == 1 || GetPlayerState(i) == 2 || GetPlayerState(i) == 3) {

to

if(GetPlayerState(i) >= 1|| GetPlayerState(i) <= 3)
{

A. Move the bracket down to keep your code clean
B. Saved one check