Which of the following is true regarding DIFDEN duty designation?

DIFDEN, or Disabled in Flight Duty Endorsement, is a designation applied to personnel who are on restricted flying status due to either medical considerations or limitations imposed by the Navy. This designation indicates that the individual is not cleared for regular flight duties but may still participate in certain aspects of flight-related operations, albeit with restrictions.

It is important to understand that DIFDEN is used specifically to manage the flying status of personnel who require additional oversight due to potential health or fitness issues, hence the emphasis on restricted flying rather than active or full-time flight duties. The designation assists in ensuring both the safety of the individual and the operational readiness of the aircrew.