It means a set of limits that may not be safe for a plane to go beyond.

它指许多极限点，若飞机超过这些点飞行是不安全的。

One is our own consistency within ourselves, responding the same way every time to a set of limits we've established.

一是我们自身的一致性，每次对我们设定的一系列限制做出相同的反应。