Section 12F. (a) For the purposes of this section, the following words shall have the following meanings:—

''Airplane'', an aircraft operated by an air carrier holding a certificate issued under 49 U.S.C. 41101 or any aircraft ordinarily used to transport passengers or cargo for hire.

''Cutting device'', any knife, cutlery, straight razor, box cutter or other device containing a fixed, folding or retractable blade, which is not included in the list of weapons set forth in paragraph (b) of section 10.

''Prohibited weapon'', any infernal machine as defined in section 102A of chapter 266, any stun gun as defined in section 131J of chapter 140, any rifle, shotgun or firearm as defined in section 121 of chapter 140 or any weapon included in the list of weapons set forth in paragraph (b) of section 10.

''Secure area'', any area of an airport to which access is restricted through security measures by the airport authority or a public agency and the area beyond a passenger or property screening checkpoint at an airport.

''Airplane cabin'', any passenger or flight crew area within an airplane while the airplane is on the ground in the commonwealth or over the commonwealth.

(b) Whoever occupies, or attempts to enter or occupy, a secure area of an airport or the cabin of an airplane, knowingly having in his possession or in his control and knowingly concealing, a cutting device or a prohibited weapon, notwithstanding any license to possess such a weapon or device, shall be punished by imprisonment in the house of correction for not more than 21/2 years or by imprisonment in the state prison for not more than 5 years or by a fine of not more than $5,000, or by both such fine and imprisonment.

(c) Whoever, with intent to commit a felony, occupies, or attempts to enter or occupy, a secure area of an airport or the cabin of an airplane knowingly having in his possession or in his control a cutting device or a prohibited weapon shall be punished by imprisonment in the house of correction for not more than 2 years or by imprisonment in the state prison for not more than 10 years or by a fine of not more than $10,000, or by both such fine and imprisonment.

(d) Whoever, with intent to commit a felony, places, attempts to place or attempts to have placed within a secure area of an airport or the cabin of an airplane, a prohibited weapon or cutting device, notwithstanding any license to possess such a weapon or device, shall be punished by imprisonment in the house of correction for not more than 21/2 years or by imprisonment in the state prison for not more than 10 years or by a fine of not more than $10,000, or by both such fine and imprisonment.

(e) Whoever willfully and without regard for the safety of human life, or with reckless disregard for the safety of human life, violates subsection (b), (c) or (d) shall be punished by imprisonment in the state prison for not more than 20 years or by a fine of not more than $20,000, or by both such fine and imprisonment.

(f) This section shall not apply to:—

(1) any law enforcement officer of a state or political subdivision of a state, an officer or employee of the United States government or United States military personnel authorized to carry prohibited weapons or cutting devices in an official capacity;

(2) a duly licensed individual transporting an unloaded, lawful weapon or cutting device in baggage not accessible to a passenger in flight and, in the case of a lawful weapon, if the air carrier was informed of the presence of the weapon;

(3) a cutting device, which is otherwise lawfully possessed, ordinarily used in the course of the holder's employment, trade or occupation, while the holder is authorized to conduct such employment, trade or occupation within a secure area of an airport or airplane cabin.