Section R. 408.15921 - Approaching craft by employeesRule 5921.
(1) An employee shall not be permitted to approach within 50 feet of the helicopter when the rotor blades are turning, unless the work duties of the employee require the presence of the employee within that area.(2) The employer shall instruct employees and shall ensure that, whenever approaching or leaving a helicopter which has its blades rotating, all employees shall remain in full view of the pilot and keep in a crouched position. An employee shall not be permitted to work in the area from the cockpit or cabin rearward while blades are rotating, unless authorized by the helicopter operator.(3) An employee shall not be permitted to perform work under hovering craft except when necessary to hook or unhook a load. A safe means of access shall be provided for an employee to reach the hoist line hook and engage or disengage a cargo sling while under the hovering craft.Mich. Admin. Code R. 408.15921