Fan casing liner support

The present invention relates to aircraft turbofan engines in which an annular fan casing carries an inner, abradable liner that surrounds the fan rotor. More particularly, the present invention relates to a fan casing liner that is supported by a fan outer casing to allow radial expansion and contraction of the liner independently of radial expansion and contraction of the fan outer casing. A casing for the fan section of an aircraft gas turbine engine of the turbofan type. The casing includes an inner filler material and is defined by an outer shell and an inner liner that is spaced radially inwardly from the outer shell. The inner liner is held in position relative to the outer shell by a plurality of radially-inwardly-extending support pins. The pins are carried by the outer shell and are slidably received in and extend at least partially into the inner liner. The support pins retain the inner liner against axial and rotational movement relative to the outer shell, while allowing relative radial movement therebetween in response to thermal expansion and contraction, as well as in response to aircraft maneuver loads imposed on the engine.