FREQUENCY: Very rare
FREQUENCY: Very rare ([Dungeon Level VII])
FREQUENCY: Common ([Ethereal Plane])

NO. APPEARING: 1
ARMOR CLASS: 2
MOVE: 36"
HIT DICE: 8, 12 or 16
% IN LAIR: Nil
TREASURE TYPE: Nil
NO. OF ATTACKS: 1 ~ 12 (HD 8) | 9 (HD 12) | 7 (HD 16)
DAMAGE/ATTACK: 2-20
SPECIAL ATTACKS: Whirlwind
SPECIAL DEFENSES: +2 or better weapon to hit
MAGIC RESISTANCE: Standard
INTELLIGENCE: Low
ALIGNMENT: Neutral
SIZE: L
LEVEL/X.P. VALUE: VII | 2850 + 15

Air elementals' only mode of locomotion is by "flying." They can, of
course, move at slower than the speed listed. If in combat in the air they
gain a +1 on hit probability and a +2 on each die of damage they cause.

Whirlwind: Upon command an air elemental can form a whirlwind -a truncated
reverse cone, with a 2" bottom diameter, a 6" top diameter, and a height
in inches equal to the elementals' number of hit dice, i.e. 8", 12" or 16". If
the full height of the whirlwind can't be attained due to some overhead
obstruction, the whirlwind is only half strength. A full strength air
elemental whirlwind lasts for 1 melee round, sweeps away and kills all
creatures under three hit dice, and causes 2-16 hit points of damage on all
non-aerial creatures which it fails to kill outright. Formation of this
whirlwind or dissipation of it requires one full turn.

On the elemental plane of air can be found certain intelligent air
elementals which have special abilities beyond the above. Some are
stronger than the most powerful of conjured elementals. Their queen is
both powerful and has certain magical abilities.

Aerial Combat: 36", class A.
Air elementals gain + 1 to hit and +2 on each die of damage they inflict when fighting in the air.
They move in the same manner as djinn.

(see also Aerial Servant, Djinni, Invisible Stalker, and Wind Walker)

    The elementals: Most numerous of the creatures on the plane
of elemental Air are all manner of air elementals, ranging from air
animentals (such as giant aerial rats) to elementals and elemental
monsters (such as aerial owlbears). As mentioned before,
such creatures match the basic stats of their Prime Material
counterparts, though their appearances may vary greatly from
the Prime Material monsters.

    True elemental creatures prefer areas of pure elemental air.
They generally react with hostility towards invaders, but elemental
creatures of sufficient intelligence can be bribed to be guides.

Source = Manual of the Planes

At that time elementals were rubbery dime store critters about 65 mm scale, each vaguely reminiscent of the element it represented, the fire figure a red and orange, the water one shades of blue, Can't recall the color of the air one, but it was whirrled I think. The earth elemental figurine was sort of man-like and lumpy perhaps. Memory begins to fail me after some 35 years.

Cheers,
Gary