The rules that use the category "<rotary_aircraft_type-sing>" are:

<specific_aircraft_type-not_creatable>

<rotary_aircraft_type-sing>

<specific_aircraft_type-creatable-sing>

<rotary_aircraft_type-sing>

<specific_aircraft_type-sing>

<rotary_aircraft_type-sing>

<specific_aircraft_type-not_creatable-sing>

<rotary_aircraft_type-sing>