In DnD 3.5, huge elementals have a Base Attack Bonus (BAB) above 6. For example, Huge Air has +12 and Greater Air has +15. This means that they can hit above 1 time and, in particular, the greater can hit 3 times.
But, in the monster stats (Monster Manual 1, page 96) and at the Full Attack entry, there is only the
Full Attack: 2 slams +23 melee (2d8+5)
This means that the Greater Air Elemental (which has BAB of +15) can only hit 2 times, even if it has the BAB for hitting 3?