Rule 308. The pilot of an aircraft shall not permit an object to be dropped from an aircraft in flight except upon written permission of the political subdivision having jurisdiction over the proposed act, and after full compliance is made with all applicable federal, state, and local laws and regulations. This rule does not prohibit aerial application operations such as seeding, spraying or dusting, where authorized by law, or acts performed in emergencies when it is necessary to lighten an aircraft in the interests of safety of the aircraft and its occupants.
Mich. Admin. Code R. 259.308