Passengers may not smoke and/or drink alcoholic beverages and/or use narcotics or other mind-altering drugs in any part of an aircraft operated by TRANS GUYANA AIRWAYS LTD. Failure to adhere to this regulation may result in severe criminal penalties being brought against such passengers as well as all disruption costs being claimed against him / her by the carrier. Inebriated passengers are a safety and security risk in “Air-side” areas of airports and on board aircraft. As a consequence, TRANS GUYANA AIRWAYS LTD will deny boarding to any passenger who shows signs of mental or physical impairment as a result of use of an intoxicating substance.