Final answer:
Airworthiness directives are guidelines that ensure the safety of aircraft, aircraft engines, propellers, and appliances. They specify inspections, repairs, or modifications necessary for compliance and maintenance of airworthiness.
Step-by-step explanation:
Airworthiness directives are guidelines that apply to aircraft, aircraft engines, propellers, and appliances. They are issued by aviation authorities to ensure the safety of these products. These directives specify inspections, repairs, or modifications that need to be carried out on the specific products to comply with the regulations and maintain airworthiness.
For example, an airworthiness directive might require a specific inspection of an engine component to detect a potential safety issue. If any issues are found, the directive will outline the necessary repairs or modifications to ensure the product remains airworthy.
Overall, airworthiness directives play a crucial role in maintaining the safety and reliability of aviation products.