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PROCESS AND SYSTEM TO OPEN A COCKPIT DOOR

IP.com Disclosure Number: IPCOM000244196D
Publication Date: 2015-Nov-23
Document File: 3 page(s) / 130K

Publishing Venue

The IP.com Prior Art Database

Abstract

This paper describes a system and its associated process to open the cockpit door of a commercial aircraft Existing locking devices for cockpit doors include a lock that can be operated by one person The system described in this paper allows unlocking the cockpit door under certain conditions ensuring that the cockpit door remains locked only when at least two people are in the cockpit

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PROCESS AND SYSTEM TO OPEN A COCKPIT DOOR

Abstract

This paper describes a system and its associated process to open the cockpit door of a commercial aircraft.

Existing locking devices for cockpit doors include a lock that can be operated by one person. The system described in this paper allows unlocking the cockpit door under certain conditions, ensuring that the cockpit door remains locked only when at least two people are in the cockpit.

The system:

Fig.1 Fig.2

The system consists of:

- A button A (see Fig.1) located outside the cockpit: This button allows the activation of an aural signal in the cockpit and the interlocking of a count-down. At the end of the count-down, the cockpit door is unlatched.

- Two push-buttons B and C positioned on each left-right side of the cockpit: (see Fig.2): These push- buttons, when activated at the same time, allow the cancellation of the count-down intended to unlatch the door of the cockpit. These buttons are located inside the cockpit.

The button A is located near the cockpit door. It could be in a push-button located in a box fitted with a transparent door of the type of those used for fire warning buttons. On some aircrafts having a digital icode to open the cockpit door, taping a predetermined code could allow the activation of an aural signal in the cockpit and the interlocking of a count-down intended to unlatch the door of the cockpit


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The push-buttons B and C are spaced from each other to prevent a person alone to push on the two buttons at the same time. Each push-button must be nevertheless accessible for the pilots so that they can press the button located on their side while continuing to pilot.

Pushing on the push-buttons B and C cancel the count-down only if the two buttons are simultaneously pushed in a very short time (e.g. in the same second) to prevent a person from blocking a first button with an object and then push on the second one. On this subject, push-buttons B and C would preferably be arranged on ver...