What's the meaning of "the break is a level" in a recovery operation of an aircraft carrier? The break is a level, 180° turn made at 800 feet (240 m), descending to 600 feet (180 m) when established downwind. Landing gear/flaps are lowered, and landing checks are completed.


(source: wikimili.com)
"Level" isn't a noun here--it's not that the break is a level.  Level is an adjective describing the kind of a turn.  A break is a turn; that turn is a level turn (neither descending nor ascending), and a 180 degree turn, and it is made at 800 feet.