Md. Code, Transportation § 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 subtitle, 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.