Maryland Transportation Section 5-209
§ 5-209.
  (a)   The Executive Director or any officer or employee of the Administration designated by the Executive Director may conduct investigations, inquiries, and hearings as to:
    (1)   Any matter covered by this title or by a rule, regulation, or order of the Administration; or
    (2)   Any aeronautics accident in this State.
  (b)   Hearings shall be:
    (1)   Open to the public; and
    (2)   Except as provided in § 5-210 of this title, held on such notice as the Executive Director considers advisable.
  (c)   The Executive Director or his designee may:
    (1)   Administer oaths;
    (2)   Certify to all official acts; and
    (3)   Issue subpoenas and orders for the attendance and testimony of witnesses and the production of papers, books, and documents.
  (d)   (1)   If a person fails to comply with any subpoena or order issued under this section, the Executive Director or his designee may invoke the aid of a court of competent jurisdiction.
    (2)   The court may order that person to obey the subpoena or order or to give evidence about the matter in question.