Persons operating model rockets that use not more than 125 grams of
propellant; that are made of paper, wood, or breakable plastic; that
contain no substantial metal parts, and that weigh not more than 1,500
grams, including the propellant, need not comply with §101.23 (b), (c),
(g), and (h), provided:
(a) That person complies with all provisions of §101.25; and
(b) The operation is not conducted within 5 miles of an airport runway
or other landing area unless the information required in §101.25 is also
provided to the manager of that airport.