Cockpit transmission assembly

Details Cockpit transmission assembly Cockpit transmission assembly

1986-04-07

1987-11-10

Tubbesing, T. H.

Communications: directive radio wave systems and devices (e.g.,

Radar transponder system

342 60, G01S 1380

Patent

active

047060913

ABSTRACT:
An audio signal transmission system to be used on commercial airlines for the discrete transmission of voice conversations emanating from the cockpit of the aircraft automatically to a ground tracking station or a tracking aircraft in an emergency situation, sich as a hijacking, unbeknownst to occupants of the cockpit other than the crew members. The transmission system comprises an audio switching assembly which, when activated, transfers audio signals from a voice recorder assembly normally found on commercial aircraft to a radio transceiver of the aircraft for automatic transmission to ground tracking stations. Activation of the system can occur by a crew member carrying out his normal activities therefore not alerting hijackers when performing either one or both of the duties relating to setting the dual transponder control to a preselected code setting and/or the frequency channel selector of the radio transceiver to a preselected frequency.

REFERENCES:
patent: 3931622 (1976-01-01), Freedman

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