A display system for an aircraft, comprising main display means including: - at least one basic screen (32A-32D), and - means for handling the graphic interface of said or each basic screen (32A-32D), the handling means being able to separately display on the main display means at least one first display window (46A-46F) and at least one second display window (46A-46F), each display window (46A-46F) displaying at least one pictogram representative of a parameter and/or a control of the aircraft, - additional display means including: - at least one additional screen (40A, 40B), and - additional means for handling the graphic interface of the additional screen (40A, 40B) able to display on the additional screen (40A, 40B), in a given operational state of the aircraft, a summary window (60D-60I) depending on the operational state of the aircraft, characterized in that the summary window (60D-60I) comprises at least one first pictogram (90A-90Q) able to be displayed on the first display window (46A-46F) of the main display means without being displayed on the second window (46A-46F) of the main display means, and at least one second pictogram (90A-90Q) intended to be displayed on the second display window (46A -46F) of the main display means without being displayed on the first window (46A -46F) of the main display means, the additional interface handling means being able to display a first summary window (60D-60H) comprising a first set of pictograms (90A-90Q) stemming from two separate windows (46A -46F) of the main display means in a first operational state of the aircraft, and a second summary window (60D-60H) comprising a second set of pictograms (90A-90Q) stemming from two separate windows (46A -46D) of the main display means in a second operational state of the aircraft, the first set of pictograms being different from the second set of pictograms, and in that the additional interface handling means comprise means for detecting a current operational state of the aircraft, and automatic switching means capable of automatically switching the display onto the additional screen (40A, 40D) from the first summary window (60D-60H) towards the second summary window (60D-60H) depending on the current operational state detected by the detection means. - at least one basic screen (32A-32D), and - means for handling the graphic interface of said or each basic screen (32A-32D), the handling means being able to separately display on the main display means at least one first display window (46A-46F) and at least one second display window (46A-46F), each display window (46A-46F) displaying at least one pictogram representative of a parameter and/or a control of the aircraft, - additional display means including: - at least one additional screen (40A, 40B), and - additional means for handling the graphic interface of the additional screen (40A, 40B) able to display on the additional screen (40A, 40B), in a given operational state of the aircraft, a summary window (60D-60I) depending on the operational state of the aircraft, characterized in that the summary window (60D-60I) comprises at least one first pictogram (90A-90Q) able to be displayed on the first display window (46A-46F) of the main display means without being displayed on the second window (46A-46F) of the main display means, and at least one second pictogram (90A-90Q) intended to be displayed on the second display window (46A -46F) of the main display means without being displayed on the first window (46A -46F) of the main display means, the additional interface handling means being able to display a first summary window (60D-60H) comprising a first set of pictograms (90A-90Q) stemming from two separate windows (46A -46F) of the main display means in a first operational state of the aircraft, and a second summary window (60D-60H) comprising a second set of pictograms (90A-90Q) stemming from two separate windows (46A -46D) of the main display means in a second operational state of the aircraft, the first set of pictograms being different from the second set of pictograms, - at least one additional screen (40A, 40B), and - additional means for handling the graphic interface of the additional screen (40A, 40B) able to display on the additional screen (40A, 40B), in a given operational state of the aircraft, a summary window (60D-60I) depending on the operational state of the aircraft, characterized in that the summary window (60D-60I) comprises at least one first pictogram (90A-90Q) able to be displayed on the first display window (46A-46F) of the main display means without being displayed on the second window (46A-46F) of the main display means, and at least one second pictogram (90A-90Q) intended to be displayed on the second display window (46A -46F) of the main display means without being displayed on the first window (46A -46F) of the main display means, the additional interface handling means being able to display a first summary window (60D-60H) comprising a first set of pictograms (90A-90Q) stemming from two separate windows (46A -46F) of the main display means in a first operational state of the aircraft, and a second summary window (60D-60H) comprising a second set of pictograms (90A-90Q) stemming from two separate windows (46A -46D) of the main display means in a second operational state of the aircraft, the first set of pictograms being different from the second set of pictograms,