A speed change mechanism for a gas turbine engine comprising: a geared architecture (48; 48A; 48B) including: a plurality of intermediate gears (82A; 82B) surrounding a sun gear (74A; 74B) in driving engagement with a flexible input shaft; a carrier (90A; 90B) supporting the plurality of intermediate gears (82A; 82B) and include a first carrier bearing flange (128A; 128B; 136A; 136B); a ring gear (108A; 108B) surrounding the plurality of intermediate gears (82A; 82B) and including a ring gear bearing flange; and at least one ring gear carrier bearing engaging the first carrier bearing flange (128A; 128B; 136A; 136B) and the ring gear bearing flange; a flexible carrier support (96A; 96B) or a flexible ring gear support (96A; 96B) for supporting the geared architecture (48; 48A; 48B); and a deflection limiter (150A; 150B) attached to the flexible carrier support (96A; 96B) or the flexible ring gear support (96A; 96B), wherein the deflection limiter (150A; 150B) includes an axially extending branch (154A; 154B) and/or a radially extending branch (168A; 168B), wherein the geared architecture (48; 48; 48B) is in driving engagement with a flexible output shaft, wherein the first carrier bearing flange (128A; 128B; 136A; 136B) extends axially aft from an aft plate (94A; 94B) of the carrier (90A; 90B), characterised in that the sun gear (74A; 74B) includes an aft sun gear bearing flange (137A; 137B) and at least one sun gear carrier bearing (138A; 138B) engages the first carrier bearing flange (128A; 128B; 136A; 136B) and the aft sun gear bearing flange (137A; 137B). a geared architecture (48; 48A; 48B) including: a plurality of intermediate gears (82A; 82B) surrounding a sun gear (74A; 74B) in driving engagement with a flexible input shaft; a carrier (90A; 90B) supporting the plurality of intermediate gears (82A; 82B) and include a first carrier bearing flange (128A; 128B; 136A; 136B); a ring gear (108A; 108B) surrounding the plurality of intermediate gears (82A; 82B) and including a ring gear bearing flange; and at least one ring gear carrier bearing engaging the first carrier bearing flange (128A; 128B; 136A; 136B) and the ring gear bearing flange; a plurality of intermediate gears (82A; 82B) surrounding a sun gear (74A; 74B) in driving engagement with a flexible input shaft; a carrier (90A; 90B) supporting the plurality of intermediate gears (82A; 82B) and include a first carrier bearing flange (128A; 128B; 136A; 136B); a ring gear (108A; 108B) surrounding the plurality of intermediate gears (82A; 82B) and including a ring gear bearing flange; and at least one ring gear carrier bearing engaging the first carrier bearing flange (128A; 128B; 136A; 136B) and the ring gear bearing flange; a flexible carrier support (96A; 96B) or a flexible ring gear support (96A; 96B) for supporting the geared architecture (48; 48A; 48B); and a deflection limiter (150A; 150B) attached to the flexible carrier support (96A; 96B) or the flexible ring gear support (96A; 96B), wherein the deflection limiter (150A; 150B) includes an axially extending branch (154A; 154B) and/or a radially extending branch (168A; 168B), wherein the geared architecture (48; 48; 48B) is in driving engagement with a flexible output shaft, wherein the first carrier bearing flange (128A; 128B; 136A; 136B) extends axially aft from an aft plate (94A; 94B) of the carrier (90A; 90B), characterised in that the sun gear (74A; 74B) includes an aft sun gear bearing flange (137A; 137B) and at least one sun gear carrier bearing (138A; 138B) engages the first carrier bearing flange (128A; 128B; 136A; 136B) and the aft sun gear bearing flange (137A; 137B).