Abstract: A wearable device is provided to be worn by an operator of an aircraft. The wearable device includes a communication unit configured to receive aircraft parameters from an aircraft system; a database configured to store a rule set that defines at least a first rule with a first alert condition and a first response associated with the first alert condition; a processing unit coupled to the communication unit and the database, the processing unit configured to evaluate the first alert condition in view of the aircraft parameters and to initiate the first response when the aircraft parameters violate the first condition; and an alert unit coupled to the processing unit and configured to communicate the first response to the operator.

Abstract: A wearable device is provided to be worn by an operator of an aircraft. The wearable device includes a communication unit configured to receive aircraft parameters from an aircraft system; a database configured to store a rule set that defines at least a first rule with a first alert condition and a first response associated with the first alert condition; a processing unit coupled to the communication unit and the database, the processing unit configured to evaluate the first alert condition in view of the aircraft parameters and to initiate the first response when the aircraft parameters violate the first condition; and an alert unit coupled to the processing unit and configured to communicate the first response to the operator.

Abstract: A check valve is provided that includes a valve housing that has a side wall and a flow path therethrough, the side wall defining the flow path. The flow path includes an inlet, an outlet, and a centerline extending between the inlet and the outlet. At least one control member is positioned in the flow path and movable between a first position, wherein fluid flow through the valve housing is substantially prohibited and a second position wherein fluid flow is permitted. The side wall includes a stop configured to limit movement of the at least one control member at a pre-determined stop angle relative to the flow path centerline.