A geared turbofan engine comprising: a fan rotatable about an engine axis (A); a compressor section compressing air and delivering the compressed air to a combustor where the compressed air is mixed with fuel and ignited to drive a turbine section that in turn drives the fan and the compressor section ; a gear system driven by the turbine section for driving the fan at a speed different than the turbine section , the gear system including: a carrier attached to a fan shaft ; a plurality of planet gears supported within the carrier , wherein each of the plurality of planet gears includes a first row of gear teeth and a second row of gear teeth supported within the carrier ; a sun gear driven by a turbine section , the sun gear in driving engagement with the plurality of planet gears ; and at least two separate ring gears circumscribing the plurality of planet gears , wherein each of the at least two ring gears are supported individually by a respective flexible ring gear mount that enables movement relative to an engine static structure ; characterised in that each ring gear mount includes a curved portion (212A-B) respectively forward or aft of the ring gears , wherein the flexible ring gear mounts collect oil expelled from the gear system and direct the collected oil through openings within each mount to an oil collector system . a fan rotatable about an engine axis (A); a compressor section compressing air and delivering the compressed air to a combustor where the compressed air is mixed with fuel and ignited to drive a turbine section that in turn drives the fan and the compressor section ; a gear system driven by the turbine section for driving the fan at a speed different than the turbine section , the gear system including: a carrier attached to a fan shaft ; a plurality of planet gears supported within the carrier , wherein each of the plurality of planet gears includes a first row of gear teeth and a second row of gear teeth supported within the carrier ; a sun gear driven by a turbine section , the sun gear in driving engagement with the plurality of planet gears ; and at least two separate ring gears circumscribing the plurality of planet gears , wherein each of the at least two ring gears are supported individually by a respective flexible ring gear mount that enables movement relative to an engine static structure ; characterised in that each ring gear mount includes a curved portion (212A-B) respectively forward or aft of the ring gears , wherein the flexible ring gear mounts collect oil expelled from the gear system and direct the collected oil through openings within each mount to an oil collector system . a carrier attached to a fan shaft ; a plurality of planet gears supported within the carrier , wherein each of the plurality of planet gears includes a first row of gear teeth and a second row of gear teeth supported within the carrier ; a sun gear driven by a turbine section , the sun gear in driving engagement with the plurality of planet gears ; and at least two separate ring gears circumscribing the plurality of planet gears , wherein each of the at least two ring gears are supported individually by a respective flexible ring gear mount that enables movement relative to an engine static structure ; characterised in that each ring gear mount includes a curved portion (212A-B) respectively forward or aft of the ring gears , wherein the flexible ring gear mounts collect oil expelled from the gear system and direct the collected oil through openings within each mount to an oil collector system . <EOS>