vertical stabilizer
vertical stabiliser
vertical fin
tail fin
tailfin

Approximately half of the vertical stabilizer was broken off the A320.

Its vertical stabilizer's leading edge is swept back at a 50 angle.

Rather than a single vertical stabilizer, a twin tail has two.

A variation on the twin tail, it has three vertical stabilizers.

I can show you the hole in the vertical stabilizer.

All the B-25s had the tip of the vertical stabilizer painted blue.

The manner in which the vertical stabilizer separated concerned investigators.

Its vertical stabilizer was increased in size by approximately 20%.

A photograph, taken from the ground some time later, confirmed the vertical stabilizer was missing.

The area of the tailplane and the vertical stabilizer was also increased.