Honeywell International Inc.

John Hillier

Daniel Eugene Lewis

Rajesh Chaubey

Dorothee De Villele

Baptiste Duffourd

Thanga Anandappan

Daniel Lewis

Visvanathan Thanigai Nathan

Methods and systems are provided for engaging a vertical navigational descent (VNAV/DES) mode of a flight management system (FMS) for an aircraft. The method comprises retrieving a preset vertical navigation (VNAV) profile for a descent path of the aircraft that is stored in the FMS. The current flight path angle (FPA) and vertical speed (VS) of the aircraft is determined and intercept parameters are calculated to intercept the preset VNAV profile with the VNAV/DES mode of the FMS. The intercept parameters are calculated based on the current FPA and VS and displayed to an aircrew member of the aircraft on a visual display device. The aircrew member is allowed to accept the intercept parameters with the VNAV/DES mode of the FMS.

Method and system for engaging a vertical navigation descent mode for an aircraft

Systems and methods may be used for monitoring and identifying failure in flight management systems. For example, a method may include: calculating, using a first flight management system, a first value of a guidance command for controlling an aircraft for an RNP AP procedure; receiving a second value of the guidance command from a second flight management system; comparing the first value with the second value to determine whether the first value matches the second value; upon determining that the first value does not match the second value, using a flight management system monitor to determine, from the first flight management system and the second flight management system, a flight management system that has computed a correct value of the guidance command; and generating a message indicating that the determined flight management system is to be used to guide the aircraft.

Systems and methods for monitoring and identifying failure in dual flight management systems

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Phoenix, AZ, United States of America

John Hillier