When the coach visit POH Depot...as the Depot issue next POH schedule, means issue fitness clearance till next visit timeline!!!
If no mishappening or issue occur, Coach gets maintained at Primary Depot & small issue are addressed at Coach Care Depot, available at major stations...If Coach Care Depot unable to resolve, its been sent to POH Depot, attached as extra closed coach with pass/exp...issue gets rectified at POH Depot or if Coach isnt fit for further run, gets scrapped...