Flying level

(Civil Engin.) a reconnoissance level over the course of a projected road, canal, etc.

See also: Flying

References in periodicals archive ?
Goggles worn over the pilot's eyes flashed lights to wake him up while armbands placed underneath their suits buzzed when the plane was not at flying level.
The jet stream is expected to build at flying level - 30,000ft above the ocean.
Book cruise numbers and the experience flying level with the 180-HP Scout confirmed my initial opinion about adding power to the Scout--the extra power of the Denali would generate impressive climb performance but not much extra cruise speed.
You're flying along and just turn around on your longitudinal axis, ending up flying level and straight again.
Consolidation of revised techniques at formal training units can build upon traditional methods learned at the undergraduate flying level yet leverage specific aircraft capabilities to help establish foundational skillsets that will enhance student performance during initial qualification.
Even when 343 stumbles, such as bookending the campaign with two jarring quick time events, or introducing a flying level late on that has seemingly been beamed in from the end of Return of the Jedi, you can forgive it because it gets so much right.
In this SD illusion, obscured vision, acceleration, and the orientation of the pilot's head (looking upward) conspire to tell the pilot's inner ear the airplane is climbing when it is actually flying level.
For example, flying level at 100 knots in a high-performance plane with flaps up often results in an uncomfortably high pitch attitude.
Now that I was sure we'd be flying level for awhile I took my parachute back off and made my way through the bomb bay, which was still loaded with bombs.
When they fly into cloud and visibility is low, they are told to trust the instruments on board the aircraft, in particular the gauge that tells them they are flying level.
Fortunately for Sun, the company appears to have hit a point where it is once again flying level, and if the economy improves in the sectors where it plays best - financial services for one - then Sun might even be poised once again for revenue growth and some more substantial profits.