Notice of hearing, not less than 10 days in advance of the date set
for such hearing, shall be transmitted to the officer or officers
accused of serious misconduct and other interested persons, insofar as
they are known, and shall inform them of (a) the time, place, and nature
of the hearing; (b) the legal authority and jurisdiction under which the
hearing is to be held; (c) the matters of fact and law asserted; and (d)
their rights to challenge the appointment of certain of, or all of, the
officers of the union to conduct the hearing in accordance with this
subpart. The labor organization shall promptly inform its members of the
provisions of the notice. Copies of the notice shall be made available
for inspection at the office of the labor organization.
