application_number US 9537693 A description referring to the drawings a wing 1 comprises a wing structural box 2 having a front spar 3 a rear spar 4 and upper and lower aerodynamic profile defining skins 5 6 the wing box 2 supports rearwardly of the rear spar 4 a trailing edge structure 7 comprising upper and lower trailing edge panels 8 9 a spoiler 10 and a flap 11 the front spar 3 supports forwardly thereof a fixed leading edge structure 12 comprising a d nose aerodynamic profile skin panel 13 upper and lower leading edge panels 14 15 and a sub spar 16 the sub spar 16 is attached to the front spar 3 by the upper and lower leading edge panels 14 15 and by a series of spanwise spaced ribs 17 the wing 1 carries a leading edge high lift device in the form of a slat 18 referring to fig2 a fixed leading edge structure 12 is shown in vertical section looking spanwise the structure comprises 3 skin panels namely a d nose aerodynamic profile panel 13 an upper leading edge panel 14 and a lower leading edge panel 15 all three panels are made of fibre reinforced composite with the d nose panel 13 and the upper leading edge panel 14 comprising a layer of aluminium mesh 19 20 respectively located in each case between an outer or surface lamina 21 and its next adjacent lamina 22 see fig3 the panels 13 14 15 are all mounted to a sub spar 16 running spanwise of the wing 1 the sub spar 16 has a main portion 24 of fibre reinforced plastics and.