AERONAUTICS. 21

1929, ch. 219, sec. 21.

34. The State Aviation Commission is hereby authorized to promul-
gate plans, ratings and regulations relating to the construction and main-
tenance of airports or landing fields used for public purposes in this State,
which plans, ratings and regulations shall conform to and coincide with
the plans, ratings and regulations issued from time to time by the Depart-
ment of Commerce, pursuant to the provisions of the United Stated Air
Commerce Act of 1926, and amendments thereto. It shall be unlawful
for any person or corporation to operate aircraft regularly for the purpose
of carrying passengers for hire from any airport or landing field which
has not been rated as safe for the purpose for which it is to be used, by
the State Aviation Commission or the United States Secretary of Com-
merce. This sub-title shall not be construed to prevent the emergency or
intermittent use of any field for aviation purposes when an authorized
landing field is not available. ¹

1929, ch. 219, sec. 22.

35. The State Aviation Commission is authorized and directed to
promulgate such plans, ratings and regulations as soon as possible after
June 1, 1929, and from time to time thereafter to prepare and issue
bulletins giving the location, rating and a short description of all approved
airports and landing fields within the State of Maryland.

1929, ch. 219, sec. 23.

36. Pending promulgation of all rules and regulations for airports and
landing fields by the State Aviation Commission, it shall be unlawful to
operate aircraft regularly for the purpose of carrying passengers for hire
from any airport or landing field, which has not been rated D5x or better
by the Department of Commerce, provided, however, if a field does not
hold a rating of D5x or better and has not been refused such a rating, it
shall be lawful to carry passengers temporarily out of such a field upon
proof that an application has already been made to the Department of
Commerce or to the State Aviation Commission, for a rating.

1929, ch. 219, sec. 24.

37. The State Aviation Commission is authorized in the name of the
State of Maryland to enforce the provisions of this sub-title by injunction.

¹ Sections 33 and 34 are practically identical.