Emergency locator transmitter activation device for enhanced emergency location performance

  • US 10,450,084 B2
  • Filed: 02/25/2016
  • Issued: 10/22/2019
  • Est. Priority Date: 02/25/2016
  • Status: Active Grant
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First Claim
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1. A system onboard an aircraft comprising:

  • an ELT remote panel on the flight deck of the aircraft, the ELT remote panel comprising a switch;

    an antenna that is attached to an exterior of a fuselage skin of the aircraft;

    an emergency locator transmitter connected to the antenna; and

    an activation/trigger device connected to the switch of the ELT remote panel and to the emergency locator transmitter,wherein the emergency locator transmitter is also connected to the switch of the ELT remote panel;

    wherein the activation/trigger device comprises a common ELT crew activation input interface, ELT activation logic configured to process inputs received from the common ELT crew activation input interface, and a common ELT crew activation output interface comprising first, second and third terminals and a switch;

    wherein the first terminal of the common ELT crew activation output interface is connected to the emergency locator transmitter and the third terminal of the common ELT crew activation output interface is connected to ground;

    wherein the switch has an input terminal connected to the second and third terminals, an ARM terminal and an ON terminal connected to the first terminal, the switch being switchable between a first switch state wherein the input terminal is electrically connected to the ARM terminal and a second state wherein the ON terminal is electrically connected to the input terminal; and

    wherein the state of the switch is controlled by the ELT activation logic.

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