An aircraft wing system comprising: an aircraft wing including an upper surface, a lower surface, and a leading edge between the upper surface and the lower surface; a fairing coupled to the leading edge of the aircraft wing; actuation means configured to move the fairing relative to the aircraft wing between a stowed position, a first deployed position, and a second deployed position; a guiding system for guiding movement of the fairing relative to the aircraft wing, the guiding system comprising: a bracket fixed to either the fairing or the aircraft wing, the bracket comprising two roller tracks (706, 708); and two rollers (710, 712) fixed to the other of the one of the fairing and the aircraft wing than the one to which the bracket is fixed, the rollers (710, 712) being fitted in respective roller tracks (706, 708) of the bracket, each roller (710, 712) being configured to roll along the roller track (706, 708) to which it is fitted; wherein the stowed position is when the fairing is in contact with the aircraft wing and the fairing serves as a continuation of the aircraft wing; the first deployed position is when the fairing is in contact with the aircraft wing and located below the stowed position; and the second deployed position is when the fairing is spaced apart from the leading edge of the aircraft wing, thereby defining a gap (402, 500) between the fairing and the leading edge through which air may flow. an aircraft wing including an upper surface, a lower surface, and a leading edge between the upper surface and the lower surface; a fairing coupled to the leading edge of the aircraft wing; actuation means configured to move the fairing relative to the aircraft wing between a stowed position, a first deployed position, and a second deployed position; a guiding system for guiding movement of the fairing relative to the aircraft wing, the guiding system comprising: a bracket fixed to either the fairing or the aircraft wing, the bracket comprising two roller tracks (706, 708); and two rollers (710, 712) fixed to the other of the one of the fairing and the aircraft wing than the one to which the bracket is fixed, the rollers (710, 712) being fitted in respective roller tracks (706, 708) of the bracket, each roller (710, 712) being configured to roll along the roller track (706, 708) to which it is fitted; wherein the stowed position is when the fairing is in contact with the aircraft wing and the fairing serves as a continuation of the aircraft wing; the first deployed position is when the fairing is in contact with the aircraft wing and located below the stowed position; and the second deployed position is when the fairing is spaced apart from the leading edge of the aircraft wing, thereby defining a gap (402, 500) between the fairing and the leading edge through which air may flow. a bracket fixed to either the fairing or the aircraft wing, the bracket comprising two roller tracks (706, 708); and two rollers (710, 712) fixed to the other of the one of the fairing and the aircraft wing than the one to which the bracket is fixed, the rollers (710, 712) being fitted in respective roller tracks (706, 708) of the bracket, each roller (710, 712) being configured to roll along the roller track (706, 708) to which it is fitted; wherein the stowed position is when the fairing is in contact with the aircraft wing and the fairing serves as a continuation of the aircraft wing; the first deployed position is when the fairing is in contact with the aircraft wing and located below the stowed position; and the second deployed position is when the fairing is spaced apart from the leading edge of the aircraft wing, thereby defining a gap (402, 500) between the fairing and the leading edge through which air may flow.