Abstract: A method for improving fuel economy on a passenger jet aircraft comprises automatically receiving a communication from the aircraft to a ground station comprising at least one subsystem operating parameter measured during the current flight, detecting whether the operating parameter meets predetermined criteria and, if the criteria are met, automatically sending a communication to indicate the aircraft's status for a next flight. If the criteria are not met, a status of the aircraft is automatically changed and a communication is sent. Other methods and systems are also described.

Abstract: A method for improving fuel economy on a passenger jet aircraft comprises automatically receiving a communication from the aircraft to a ground station comprising at least one subsystem operating parameter measured during the current flight, detecting whether the operating parameter meets predetermined criteria and, if the criteria are met, automatically sending a communication to indicate the aircraft's status for a next flight. If the criteria are not met, a status of the aircraft is automatically changed and a communication is sent. Other methods and systems are also described.

Abstract: A method for improving fuel economy on a passenger jet aircraft comprises automatically receiving a communication from the aircraft to a ground station comprising at least one subsystem operating parameter measured during the current flight, detecting whether the operating parameter meets predetermined criteria and, if the criteria are met, automatically sending a communication to indicate the aircraft's status for a next flight. If the criteria are not met, a status of the aircraft is automatically changed and a communication is sent. Other methods and systems are also described.

Abstract: A switch operated to an open circuit condition by a closed lid of an automatic clothes washing machine. The switch housing is comprised of two parts which mate with each other and with the specially configured switch operating shaft for inhibiting entry of liquids into the switch contact chamber of the housing by splashing or by capillarity. A vent tube leads from the housing and, in effect, accepts air resulting from the air in the housing expanding when the switch is warm and which allows back flow of that air into the housing when the air in the housing cools. The tube prohibits pressure developing in the housing which is negative with respect to ambient atmospheric pressure.