Patent ID: 7121509
Filing Date: 2006-10-17
Classification: B64D

Abstract:
1. A system for alerting an aircrew of a dangerous situation occurring on an aircraft, the system comprising: a plurality of fobs, each fob being carried by an authorized person located on the aircraft, the fob capable of transmitting a plurality of selectable signals, each selectable signal providing specific information on the dangerous situation within the cabin area; and a cockpit display unit (CDU) for receiving signals sent from the transmitting fob, said CDU located within a cockpit of the aircraft and having a means for detecting an attempt to jam a frequency used by the transmitting fob to send the signal to the CDU; whereby one of the authorized persons carrying the fob detects a dangerous situation, selects a selectable signal from the plurality of selectable signals, and sends the selected signal from the fob to said CDU, said CDU providing an indicator to a cockpit crew and an alert signal to the plurality of fobs of the dangerous situation.