These terms have the following meanings in this subchapter:(1) Serious incident--A non-routine occurrence that has or may have dangerous or significant consequences for the care, supervision, or treatment of a child. The different types of serious incidents are noted in §748.303 of this division (relating to When must I report and document a serious incident?).(2) Triggered review of a child's unauthorized absences--A review of a specific child's pattern of unauthorized absences when the child has had three unauthorized absences within a 60-day timeframe.(3) Unauthorized absence--A child is absent from the grounds of an operation without permission from a caregiver and cannot be located. This includes when an unauthorized person has removed the child from the operation.