SYSTEM AND METHOD FOR GENERATING AN ALTIMETER MIS-SET ALERT ON A PRIMARY FLIGHT DISPLAY
First Claim
1. A primary flight display system for deployment on an aircraft including a barometric altimeter and a secondary altitude-determining device, the barometric altimeter providing a first estimated altitude corresponding to a reference pressure setting, and the secondary altitude-determining device providing a second estimated altitude, the primary flight display system comprising:
- a primary flight display (PFD); and
a controller coupled to the PFD and configured to generate;
(i) an altitude graphic on the PFD indicative of the first estimated altitude, and (ii) a visual alert on the PFD when the difference between the first estimated altitude and the second estimated altitude exceeds a predetermined error threshold.
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Accused Products
Abstract
A primary flight display system is provided for deployment on an aircraft including a barometric altimeter and a secondary altitude-determining device. The barometric altimeter provides a first estimated altitude corresponding to a reference pressure setting, and the secondary altitude-determining device provides a second estimated altitude. The primary flight display system includes a primary flight display (PFD), and a controller coupled to the PFD. The controller is configured to generate: (i) an altitude graphic on the PFD indicative of the first estimated altitude, and (ii) a visual alert on the PFD when the difference between the first estimated altitude and the second estimated altitude exceeds a predetermined error threshold.
45 Citations
20 Claims
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1. A primary flight display system for deployment on an aircraft including a barometric altimeter and a secondary altitude-determining device, the barometric altimeter providing a first estimated altitude corresponding to a reference pressure setting, and the secondary altitude-determining device providing a second estimated altitude, the primary flight display system comprising:
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a primary flight display (PFD); and a controller coupled to the PFD and configured to generate;
(i) an altitude graphic on the PFD indicative of the first estimated altitude, and (ii) a visual alert on the PFD when the difference between the first estimated altitude and the second estimated altitude exceeds a predetermined error threshold. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method for alerting a pilot of an aircraft to the mis-setting of a reference pressure setting associated with a barometric altimeter deployed on the aircraft, the aircraft including a secondary altitude-determining device and a primary flight display (PFD), the method comprising:
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providing a first estimated altitude utilizing the barometric altimeter device; providing a second estimated altitude utilizing the secondary altitude-determining device; comparing the first estimated altitude to the second estimated altitude; and generating a visual alert on the PFD when the difference between first estimated altitude and the second estimated altitude exceeds a predetermined error threshold. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17)
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18. A program product for use in conjunction with an aircraft display system including a primary flight display (PFD), the aircraft display system deployed on an aircraft including a barometric altimeter and a secondary altitude-determining device, the barometric altimeter providing a first estimated altitude corresponding to a reference pressure setting, and the secondary altitude-determining device providing a second estimated altitude, the program product comprising:
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an avionics display program adapted to; produce an altitude graphic on the PFD indicative of the first estimated altitude; and generate a visual alert on the PFD when the difference between the first estimated altitude and the second estimated altitude exceeds a predetermined error threshold; and computer-readable media bearing the avionics display program. - View Dependent Claims (19, 20)
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Specification