visual reference to the ground造句

"You lose your visual reference to the ground, " said Webb.
Both pilots agreed to fly into the cloud, but they consequently lost visual references to the ground.
The training provides the skills needed to complete flights without visual reference to the ground, except for the takeoff and landing phases.
During the 1920s and 1930s, before night-flying instruments were commonly available on small aircraft, pilots were often instructed to enter a spin deliberately in order to avoid the much more dangerous graveyard spiral when they suddenly found themselves enveloped in clouds, hence losing visual reference to the ground.
The NTSB determined the probable cause to be " the continuation of the descent from the final approach fix through the Minimum Descent Altitude and into obstructing terrain at a time when both flight crewmembers were looking outside the aircraft in an attempt to establish visual reference to the ground.
It's difficult to find visual reference to the ground in a sentence. 用visual reference to the ground造句挺难的

The third-worst fatal accident in Scottish Airlines'history occurred on 23 December 1957, when one of its Avro 685 York C . 1 ( registration : G-AMUN ) crashed at captain, which resulted in an approach below the critical height without sufficient visual reference to the ground while he attempted to land, as the probable cause.
Its report, released on November 12, 1970, blamed the crash on " Spatial disorientation of the captain precipitated by atmospheric refraction of either the approach lights or landing lights at a critical point in the approach wherein the crew was transitioning between flying by reference to flight instruments and by visual reference to the ground ."