Gas turbine engine bearing and gearbox arrangement

A gas turbine engine comprising:

• a plurality of blades that deliver air into a compressor section, the compressor section including a first compressor and a second compressor;
• a drive gear system including a sun gear encircled by a ring gear, a plurality of intermediate gears positioned between and enmeshing with the sun gear and the ring gear, with the plurality of intermediate gears carried by a gear carrier;
• a compliant flexure that couples the drive gear system to an engine case;
• a drive shaft coupling the drive gear system to the plurality of blades;
• a first spool extending along an engine longitudinal axis, the first spool including a first turbine driving an input of the drive gear system through a first shaft, and the first shaft including a flexible forward portion;
• a second spool including a second turbine driving the second compressor through a second shaft;
• a first bearing and a second bearing configured to rotate with the gear carrier, wherein the first and second bearings are located on opposite axial sides of the drive gear system relative to an engine longitudinal axis;
• a third bearing engaging the first shaft and the drive shaft;
• wherein the drive shaft is mounted to rotate with the gear carrier as a unit, the unit engages the first bearing axially forward of the gear carrier and engages the second bearing axially aft of the gear carrier with respect to the engine longitudinal axis, and the first turbine has three or more stages.