A gas turbine engine comprising: a fan section including a fan; a fan shaft rotatable about an axis; a shaft gear disposed on the fan shaft; a geared architecture driving the fan shaft; and a lubrication pump configured to supply a lubricant flow to the geared architecture and driven by a pump shaft gear; characterised by further comprising a gear train coupled to the shaft gear and configured to drive the lubrication pump in a first direction responsive to rotation of the fan shaft in both the first direction and a second direction; wherein the gear train includes a primary gear train that drives the lubrication pump when the fan shaft rotates in the first direction and a reverse gear train that drives the lubrication pump when the fan shaft rotates in the second direction, wherein the primary gear train includes a primary gear coupled to drive a primary gear shaft responsive to rotation of the fan shaft in the first direction and decoupled from the primary gear shaft responsive to rotation of the fan shaft in the second direction; the primary gear train further including a pinion gear coupled to the primary gear shaft, the pinion gear configured to drive the pump shaft gear when the fan shaft rotates in the first direction and the reverse gear train includes a reverse gear coupled to a reverse gear shaft responsive to rotation of the fan shaft in the second direction and decoupled from the reverse gear shaft responsive to rotation of the shaft in the first direction; and including a reverse idler gear driven by the reverse gear and configured to drive the pump shaft gear when the fan shaft rotates in the second direction. a fan section including a fan; a fan shaft rotatable about an axis; a shaft gear disposed on the fan shaft; a geared architecture driving the fan shaft; and a lubrication pump configured to supply a lubricant flow to the geared architecture and driven by a pump shaft gear; characterised by further comprising a gear train coupled to the shaft gear and configured to drive the lubrication pump in a first direction responsive to rotation of the fan shaft in both the first direction and a second direction; wherein the gear train includes a primary gear train that drives the lubrication pump when the fan shaft rotates in the first direction and a reverse gear train that drives the lubrication pump when the fan shaft rotates in the second direction, wherein the primary gear train includes a primary gear coupled to drive a primary gear shaft responsive to rotation of the fan shaft in the first direction and decoupled from the primary gear shaft responsive to rotation of the fan shaft in the second direction; the primary gear train further including a pinion gear coupled to the primary gear shaft, the pinion gear configured to drive the pump shaft gear when the fan shaft rotates in the first direction and the reverse gear train includes a reverse gear coupled to a reverse gear shaft responsive to rotation of the fan shaft in the second direction and decoupled from the reverse gear shaft responsive to rotation of the shaft in the first direction; and including a reverse idler gear driven by the reverse gear and configured to drive the pump shaft gear when the fan shaft rotates in the second direction.