A moving-vane angle of attack probe comprising: a vane having opposed first and second vane surfaces (1c, 1d) that define a leading edge and a trailing edge, the first and second vane surfaces(1c, 1d), each extending between the leading edge and the trailing edge; a first vane opening located on the leading edge; at least one exhaust opening; a vane conduit extending between the first vane opening and the exhaust opening such that the first vane opening and the exhaust opening are in fluid communication, the vane conduit defining at least an interior chamber between the first and second vane surfaces (1c, 1d) wherein at least a portion of the vane conduit comprises an upper interior chamber wall, a lower interior chamber wall, a first interior chamber sidewall and a second interior chamber sidewall which together define the interior chamber; and a pitot-tube located within the interior chamber such that in use it receives air that enters the interior chamber via the first vane opening, characterized in that the pitot-tube comprises: a first shielding wall extending substantially between the first and second sidewalls (5c, 5d) of the interior chamber; a second shielding wall extending substantially between the first and second sidewalls (5c, 5d) of the interior chamber, wherein the first shielding wall and the second shielding wall are spaced apart from each other to define a first sensor opening therebetween; a rear wall extending between the first shielding wall and the second shielding wall, and substantially between the first and second sidewalls (5c, 5d) of the interior chamber; and a first pressure conduit located between the first sensor opening and the rear wall, wherein the first pressure conduit is configured to transmit a pressure between the first and second shielding walls (8a, 8b); and wherein first and second bypass channels (14a, 14b) are defined between the first shielding wall and the lower interior chamber wall, and the second shielding wall and the upper interior chamber wall respectively, and wherein the bypass channels (14a, 14b) are configured such that, in use, a portion of the air that enters the interior chamber is directed along the first and second bypass channels (14a, 14b) without entering the pitot-tube. a vane having opposed first and second vane surfaces (1c, 1d) that define a leading edge and a trailing edge, the first and second vane surfaces(1c, 1d), each extending between the leading edge and the trailing edge; a first vane opening located on the leading edge; at least one exhaust opening; a vane conduit extending between the first vane opening and the exhaust opening such that the first vane opening and the exhaust opening are in fluid communication, the vane conduit defining at least an interior chamber between the first and second vane surfaces (1c, 1d) wherein at least a portion of the vane conduit comprises an upper interior chamber wall, a lower interior chamber wall, a first interior chamber sidewall and a second interior chamber sidewall which together define the interior chamber; and a pitot-tube located within the interior chamber such that in use it receives air that enters the interior chamber via the first vane opening, characterized in that the pitot-tube comprises: a first shielding wall extending substantially between the first and second sidewalls (5c, 5d) of the interior chamber; a second shielding wall extending substantially between the first and second sidewalls (5c, 5d) of the interior chamber, wherein the first shielding wall and the second shielding wall are spaced apart from each other to define a first sensor opening therebetween; a rear wall extending between the first shielding wall and the second shielding wall, and substantially between the first and second sidewalls (5c, 5d) of the interior chamber; and a first pressure conduit located between the first sensor opening and the rear wall, wherein the first pressure conduit is configured to transmit a pressure between the first and second shielding walls (8a, 8b); a first shielding wall extending substantially between the first and second sidewalls (5c, 5d) of the interior chamber; a second shielding wall extending substantially between the first and second sidewalls (5c, 5d) of the interior chamber, wherein the first shielding wall and the second shielding wall are spaced apart from each other to define a first sensor opening therebetween; a rear wall extending between the first shielding wall and the second shielding wall, and substantially between the first and second sidewalls (5c, 5d) of the interior chamber; and a first pressure conduit located between the first sensor opening and the rear wall, wherein the first pressure conduit is configured to transmit a pressure between the first and second shielding walls (8a, 8b); and wherein first and second bypass channels (14a, 14b) are defined between the first shielding wall and the lower interior chamber wall, and the second shielding wall and the upper interior chamber wall respectively, and wherein the bypass channels (14a, 14b) are configured such that, in use, a portion of the air that enters the interior chamber is directed along the first and second bypass channels (14a, 14b) without entering the pitot-tube.