; (B) make the procedures manual available to each member of the appropriate ODA unit; and (C) cooperate fully with oversight activities conducted by the Administrator in connection with the delegation. (3) Existing ODA holders With regard to an ODA holder operating under a procedures manual approved by the Administrator before the date of enactment of the FAA Reauthorization Act of 2018, the Administrator shall— (A) at the request of the ODA holder and in an expeditious manner, approve revisions to the ODA holder’s procedures manual; (B) delegate fully to the ODA holder each of the functions to be performed as specified in the procedures manual, unless the Administrator determines, after the date of the delegation and as a result of an inspection or other investigation, that the public interest and safety of air commerce requires a limitation with respect to one or more of the functions; (C) conduct regular oversight activities by inspecting the ODA holder’s delegated functions and taking action based on validated inspection findings