Problems included pilot error, mechanical failure and communications challenges.
Did the plane disintegrate at 35,000 feet from a mechanical failure and sudden decompression?
Some of these aircraft -- many older than the people flying them -- have suffered mechanical failure, and their crews have died.
If an engine had a mechanical failure, and the pilot continued to operate it, far more fuel could burn.
The chariot was subject to mechanical failure and, more importantly, was immobilized when any one of its horses was incapacitated.
The first credible theory was that the plane had suffered a catastrophic mechanical failure and crashed, probably at sea.
"The vehicle had no mechanical failure and the damage that occurred to the vehicle was from the collision".
Initial reports indicated that the aircraft had mechanical failure and had not been brought down by insurgent fire, the spokesman, Maj.
The authorities ruled out terrorism or other sabotage but said they would continue to investigate other possible causes, including mechanical failure and pilot error.
Many people are nervous about flying, which in light of terrorism, mechanical failure and airport security breaches, seems a rational response.
An osteochondral interface is essential in preventing mechanical failure and maintaining normal function of cartilage.
