Communications: electrical – Aircraft alarm or indicating systems – Flight alarm
Patent
1995-12-08
1998-04-28
Swarthout, Brent A.
Communications: electrical
Aircraft alarm or indicating systems
Flight alarm
340963, 364424013, G08B 2300
Patent
active
057450536
ABSTRACT:
A landing gear warning system for an aircraft with at least one retractable landing gear member comprising: (a) a landing gear indicator adapted for generating a signal representative of the position of the landing gear member; (b) an aircraft positioning system adapted for generating a signal representative of the aircraft's latitude, longitude, and elevation; (c) a pilot warning device; and (d) a computer system operatively coupled to the landing gear indicator, the aircraft positioning system, and the pilot warning device, wherein the computer system includes a database that contains the longitude and latitude, and elevation of a plurality of runways, and wherein the computer system is adapted for receiving the signal representative of the aircraft's latitude, longitude, and elevation, adapted for receiving the signal representative of the position of the landing gear member, and adapted for generating a pilot warning signal that activates the pilot warning device if the aircraft's elevation is less than a predetermined value above the elevation of the closest runway in the database to the aircraft and the signal representative of the position of the landing gear member indicates that the retractable landing gear member is retracted.
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