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Passenger Automatic Volume Audio System in Terminal Control Area or in Proximity of Other Flight Vehicles Disclosure Number: IPCOM000246692D
Publication Date: 2016-Jun-29
Document File: 5 page(s) / 424K

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The Prior Art Database

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Passenger Automatic Volume Audio System in Terminal Control Area or in Proximity of Other Flight Vehicles


A system and method for a flight vehicle to adjust the audio level from passenger volume to a preset position when the vehicle is operating in aviation Terminal Control Areas during take-off, departure, approach, and landing, or when in close proximity to other traffic. Selected data from COMM, NAV, GPS and traffic awareness systems stream to a processor which controls the gain of the audio system to lower or mute passenger volume when pre-defined operational conditions are met.

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Flight vehicles use headsets connecting to onboard audio system for pilots and passengers to block aircraft noise and to communicate with each other. During operation, some systems give the pilot or copilot options to control passenger audio level by manually adjusting volume control or to mute the passenger audio by manually switching off. It is common that passengers continue conversing with pilot during critical phases of flights causing pilot distraction and resulting in pilot missing calls from Air Traffic Controller and/or making bad judgment in navigation.

A terminal control area (TCA in the U.S. and Canada), also known as a terminal maneuvering area (TMA) in Europe, is a designated area of controlled airspace surrounding a major airport where there is a high volume of traffic. Depending on the size and air traffic, the TCA is classified as class B, C, or D airspaces in which Air Traffic Controllers (ATC) direct traffic flow thru designated Clearance, Ground, Tower, Departure, and Approach frequencies. Hence, one of requirements to operate flight vehicles in TCA is the requirement of radio communication between pilot and ATC. While operating in TCA, a pilot is required to establish communication with ATC thru Communication Transceiver (COMM) and to comply with ATC clearances. By procedure, a typical sequence of communication is as follows:

(1) Clearance control - pilot requests a clearance to depart to destination when aircraft is still in vicinity of TCA.
(2) Ground control - pilot requests clearance to taxi on taxiways.

(3) Tower control - pilot is at runway intersection and requests clearance for takeoff.

(4) Departure control - after aircraft take off, Tower hands off communication to Departure control.

(5) ARTC - While enroute outside of TCA, Departure control hands off communication to Air Route Traffic Control (ARTC).

(6) Approach control - Upon approaching TCA for landing, ARTC hands off communication to Approach control.
(7) Tower control - When the aircraft enters TCA and close to airport for landing, Approach hands off communication to Tower.

(8) Ground control - After landings and aircraft is on taxi ways, Towers hands off communication to Ground control.

A flight vehicle communication system consists of VHF communication transceiver (COMM) interconnected to audio control panel where pilot can connect...