Abstract: A pilot controlled relative analgesia system in which there would be located in the aircraft, possibly in the storage or luggage portion of the aircraft below the passenger deck, a pressurized source of gas capable of immobilizing individuals by placing them in a semi-conscious state, such gas including but not limited to nitrous oxide, and a control system positioned in the flight crew compartment either manual or electronic in nature for the deployment of the gas into the passenger portion of the airplane when a flight emergency in the form of a possible hijacking exists. The concentration level of nitrous oxide would be achieved and maintained until the flight crew with self-contained breathing apparatus could enter the passenger cabin and restrain and secure the appropriate individuals or alternatively maintain the level of nitrous oxide gas until the plane could be safely landed.

Abstract: A pilot controlled relative analgesia system in which there would be located in the aircraft, possibly in the storage or luggage portion of the aircraft below the passenger deck, a pressurized source of gas capable of immobilizing individuals by placing them in a semi-conscious state, such gas including but not limited to nitrous oxide, and a control system positioned in the flight crew compartment either manual or electronic in nature for the deployment of the gas into the passenger portion of the airplane when a flight emergency in the form of a possible hijacking exists. The concentration level of nitrous oxide would be achieved and maintained until the flight crew with self-contained breathing apparatus could enter the passenger cabin and restrain and secure the appropriate individuals or alternatively maintain the level of nitrous oxide gas until the plane could be safely landed.