The phrase "accustomed position" is correct and usable in written English.
It can be used to describe a state of being familiar or used to a particular position or situation.
Example: "After years of practice, she found herself comfortably returning to her accustomed position on stage."
Alternatives: "familiar position" or "usual position".
One visitor was stunned to find Pauline's lady in waiting flat on the floor, Pauline's feet firmly planted on her throat, in what was apparently her accustomed position.
McCue was at his accustomed position at the wire preparing to record the triumph of racing's next superhorse.
(He can't play shortstop, his accustomed position, because the Yanks' captain and perennial favorite, Derek Jeter, holds prior lease on the property).
In recent practices and the pregame skate, Ovechkin played the slot during power-play drills rather than his accustomed position at the point.
He has been shifted from his accustomed position on the left wing to the right side because he became, in the words of his general manager, "a little too predictable".
Yet the Lady Vols (27-8) have reached an accustomed position, playing in a regional final here Monday against top-seeded Baylor (37-0), seeking a chance to play for a ninth national championship in what could be Summitt's final season as the coach.
However, in this study one third of maternal health workers were not comfortable in assisting delivery in any position other than the medically accustomed supine position and this was supported by complaint voiced by women for the supine position they were forced to deliver.
In book publishing, he said, he has grown accustomed to positions of authority and put away his youthful restlessness.
Jose Enrique, back to playing in his more accustomed left-back position, poked a shot wide and a powerful drive saved by Gazzaniga.
Although both are more accustomed to higher positions, they have adjusted excellently to their new roles, driving forward and combining swiftly between the lines.
