Who may complete the entire initial flight check in an approved simulator?

The option stating that applicants holding a commercial pilot certificate may complete the entire initial flight check in an approved simulator is accurate because the commercial pilot certificate represents a level of training and competency that entitles the holder to operate aircraft and engage in various flight activities, including simulator checks.

Commercial pilots have successfully completed extensive training and flight experience requirements that ensure they possess the needed knowledge and skill set to operate in simulated flight environments. This level of certification allows them to be involved in advanced training processes, such as the initial flight check, indicating a significant understanding of aircraft systems and operational procedures.

In contrast, other options address individuals lacking the required level of training or certification to participate in such a comprehensive check in an approved simulator. Flight engineer applicants with ATP certification, while knowledgeable, may not necessarily be allowed to do the entire flight check depending on the specific guidelines or organizational policies. Similarly, having only a private pilot license or being a commercial pilot applicant without ratings does not provide the complete background necessary for completing the entire initial flight check in an approved simulator.