Which statement regarding Airworthiness Directives and propellers is true?

Airworthiness Directives (ADs) are legally enforceable regulations issued by the FAA to address safety issues related to aircraft components, which includes propellers. When considering the statement that is true regarding Airworthiness Directives and propellers, one must understand that ADs can be specific to certain parts or assemblies, including propellers, and that they are issued in response to findings of unsafe conditions.

The focus on only one statement being true indicates that there is specific information presented about propellers in relation to ADs, and this statement likely outlines either a common misconception or a factual assertion aligned with regulatory guidelines. The correct response emphasizes the need for precise awareness of the implications of ADs for propeller maintenance, inspection, and compliance with safety protocols.

Furthermore, recognizing that the other option suggesting both, or neither, are true introduces ambiguity or inaccuracy about the established guidelines under the Federal Aviation Regulations leads to a clearer understanding of the role of ADs in ensuring the safety and airworthiness of propellers.