§ 91.19 Carriage of narcotic drugs, marihuana, and depressant or stimulant
drugs or substances.

(a) Except as provided in paragraph (b) of this section, no person may
operate a civil aircraft within the United States with knowledge that
narcotic drugs, marihuana, and depressant or stimulant drugs or substances
as defined in Federal or State statutes are carried in the aircraft.

(b) Paragraph (a) of this section does not apply to any carriage of narcotic
drugs, marihuana, and depressant or stimulant drugs or substances authorized
by or under any Federal or State statute or by any Federal or State agency.


Now the question for the Experts on Medical Marijuana or Cannabis?

Say if some one has a precription for Cannabis and is allowed to have 1 oz
on them at all times while in public could you fly them some place when they
had their perscription on them? just wondering? if it would be coverd under
part B of 91.19