He was sent by his family to a mission school at lower altitude.
"Could it spot us if we were at low altitude?"
He was forced to move to a lower altitude due to heart disease.
Once she was at a lower altitude, the woman soon recovered.
Their next survey area would definitely be at a lower altitude.
He needed to get her to a lower altitude, but she refused to go.
The light moved very slowly and appeared to be at a low altitude.
He started to head back down to a lower altitude.
However, one of the company test pilots lost control at low altitude only weeks later, and V1 was written off.
This one happened at low altitudes right over the front line.