The present invention relates to an aircraft (1) provided with a buoyancy system (20), said buoyancy system (20) comprising a plurality of floats (25), each float (25) comprising an envelope (26) separating a space internal (INT) of the float (25) of an external medium (EXT). At least one of said floats is a luminous float (30), the luminous float (30) comprising at least one internal light source (35) disposed in said internal space (INT) of this luminous float (30), said envelope (26 ) a luminous float (30) being at least partially translucent. Abstract figure: Figure 1
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