Air operator employees authorized to conduct airman certification under aircrew designated examiner program authorized under the provisions of FAR 183.  Do not include persons at a training center authorized under the provisions of FAR 142.55(a).
An Aircrew Program Designee (APD) or a Designated Flight Engineer Examiner (DFEE) is designated to conduct certification within a specifically-approved Aircrew Designated Examiner (ADE) program. An ADE program is associated with an operator which conducts its own program of airman qualification. It is the preferred program for conducting the certification of flightcrew members for complex part 121 and 135 operators.