The pilot then returns Flight 29 to its proper altitude and heading.

After they had reached the proper altitude, Oliver stared in wonder at the moonlit landscape far below.

The important factors were the software and communication systems that kept the aircraft at the proper altitude and speed.

They quickly come to the conclusion that the rocket that pulled the cable up did not reach the proper altitude because of a blown fuse.

With practice, you will control the vigor of her jump to exactly a proper altitude.

Once the shell has attained proper altitude, due to other mechanisms within the firework, it will ignite the stars.

It dropped more than two hundred feet in a roller coaster swoop, then soared up to its proper altitude.

And it'll take our missile five minutes to reach the proper altitude.

As a result, he said, the plane was at the proper altitude.

In the game, aircraft with a flight plan involving a landing must be vectored to a proper altitude at the start of the approach pattern.