Requirements are an important part of the development process as they provide a frame or guide for the work to be done. Well written requirements set a clear goal for the end product and a verifiable set of rules upon which tests can be developed. CertTech has done extensive work under standards such as DO-178B, DO-178C, DO-254, and DO-278 (recognized in FAA regulated environments), and we understand the importance of verifiable requirements. We are able to develop or assist in the development of testable system and/or low level requirements. For scenarios where a set of requirements already exists, but independent verification and validation is required, we can review requirements to determine which requirements can be tested, and identify requirements that can be improved.