Possibly Flt.Lt Zed, however steep cockpit gradients aren't as much of a problem in western airlines compared to middle east and asian carriers. Western pilots are much more inclined to speak up if they believe something is wrong regardless of experience, and western captains are much more inclined to listen. They don't have the loss of face culture which permeates asian culture.
another factor is GEN Y, these creatures are definitley more inclined to speak up.
