Ghana Aviation Authority sources said that they suspect a brake failure in the plane may have been a contributing factor.

CNN: Officials: 10 killed after plane slams into bus in Ghana

The main call of bogus revolves around non-compliance among passengers and abject failure of enforcement in the plane.

ENGADGET: Editorial: Devices on planes -- either enforce the rules or change them

Don Enns, a regional manager at the independent Transportation Safety Board of Canada, told CTV and CP24 on Tuesday that "some sort of failure" inside one of the plane's two engines disrupted the airflow, causing part of the turbine section to fly out the back.

CNN: Engine malfunction caused plane debris to fall in Canada

His first rocket plane flight in the Bell X-1B experienced a nose gear failure on landing.

FORBES: Neil Armstrong's Immortal Footprint

Testimony at the hearings also revealed that fatigue apparently contributed to the failure of Renslow and First Officer Rebecca Shaw to save the plane as it approached Buffalo Niagara International Airport.

CNN: FAA orders review of regional airlines' training

But what's also clear is this: When our government has information on a known extremist and that information is not shared and acted upon as it should have been, so that this extremist boards a plane with dangerous explosives that could cost nearly 300 lives, a systemic failure has occurred.

WHITEHOUSE: President Obama Updates the Press in Hawaii