Так?

Код AS3:
public class A {
public static var a:Array = new Array(0,1);
public function A() {
}
}
public class B extends A {
public static var a:Array = new Array(2,3);
public function B() {
}
}
trace(A.a[0]);
trace(A.a[1]);
trace(B.a[0]);
trace(B.a[1]);
0
1
2
3