PROBLEM TO BE SOLVED: To provide a cockpit monitoring system, a cockpit condition informing device, a cockpit condition display device, and a cockpit monitoring method for taking a necessary countermeasure on the ground side by promptly informing abnormal condition in an aircraft on a flight and properly assisting the flight of the objective aircraft on the ground side.;SOLUTION: In a cockpit door opening state, the cockpit condition informing device 10 loaded on the aircraft transmits voices and images in the cockpit and a opening and closing state of the cockpit door to the cockpit condition display device 20 placed on the ground in a specific cycle. When the cockpit door is opened, regarding it as a state in which an abnormal event may have occurred in the aircraft, the cockpit condition display device 20 displays to that effect, and further the cockpit condition informing device 10 expedites a cycle for transmitting the voices and images in the cockpit to vividly provide a condition in the cockpit.;COPYRIGHT: (C)2004,JPO&NCIPI
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