<p>emerald…It depends on whether or not there is an equipment malfunction of some sort. Most equipment failures would cause some type of accompanying warning, either a light or an audible alarm. There are also usually audible or visual warnings at various altitudes above ground level (AGL) as an aircraft descends towards the runway, but the pilots need to verify their position relative to the runway to make sure they’re at the appropriate altitude.</p>
<p>As busdriver said, until we know more information it’s pure speculation what happened. Should the pilots have been able to look outside and tell they were too low given the distance from the runway? Yes…but we don’t know if there were any distractions in the cockpit that may have diverted their attention. Those types of things will become clearer as the cockpit voice recorder and black boxes are analyzed.</p>
<p>Cockpit Resource Management (CRM) is something the US airline industry developed after an Eastern Airlines crash in the Florida Everglades in the 1970’s. The aircraft had a simple problem (burned out landing gear light indicator bulb) but the cockpit crew all fixated on trying to analyze the problem and didn’t realize the autopilot had disengaged and the aircraft slowly descended until it hit the ground. CRM teaches pilots how to best manage cockpit activities, particularly in instances of aircraft malfunctions. Non-US air carriers may or may not train their pilots similarly.</p>