What type of statement must be documented for installations on a type-certificated product?

The requirement for documenting that FAA airworthiness standards have been met for installations on a type-certificated product is crucial in ensuring the safety and compliance of the aircraft. This documentation serves to validate that any modifications or installations made adhere to the rigorous standards set forth by the Federal Aviation Administration, which are designed to maintain the aircraft's safety and operational integrity.

When modifications are made to type-certificated products, they must comply with specific airworthiness criteria to ensure that the products meet the necessary performance and safety standards. This documentation is vital for regulatory oversight, and it reinforces accountability within aviation maintenance practices, ensuring that all changes follow established protocols that prioritize airworthiness.

In contrast, while compliance with maintenance deadlines, general performance benchmarks, and the cost of installed parts can be relevant in certain contexts, they do not specifically address the requirement for ensuring that modifications meet FAA airworthiness standards, which is the core focus of this question.