If there is a mechanical problem with a plane, or a pilot is sick, then chances are the flight will be canceled.

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Another problem: building a plane that would stabilize itself if a user put down its controller.

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The A350's delay is due to a production problem involving drilling holes in the plane's wings.

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Musk went through a detailed description of the battery problem on the plane.

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C130J transport plane was hitting problem after problem, it lost a key satellite surveillance contract to Boeing, and losses kept piling up.

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"With the Qatar game, it was a round trip of about 16 hours in a plane and it wouldn't have been good for my problem, " he said.

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"I said, 'I am on the plane and we are experiencing problems or there's a problem with the engine, ' " Camastra said.

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Musk also recently gave help to Boeing on its battery problem for its new 787 plane, after getting a call for help from Richard Branson.

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The problem is thought to be a short-term one and the plane is expected to be ready to depart later.

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