AIRCRAFT BRAKING SYSTEM

An aircraft wheel and brake assembly comprises a first brake pack on the wheel (116) and a second brake pack mounted on landing gear structure adjacent to the wheel. The first brake pack is operable separately from the second brake pack and can by itself provide braking and dissipate energy at a first level. The first and second brake packs are also operable together to provide braking and dissipate energy at a second, higher, level. Thus, in use, there may be braking in response to a maximum energy rejected take-off requiring the use of both the first brake pack and the second brake pack together, whereas at other times, only the first brake pack need be used. This may have maintenance benefits, for example requiring less frequent maintenance and less frequent replacement of the second brake pack.