Are approvals obtained in the field of aviation security (e.g., ACC3) considered in the TCO authorisation process?
No. TCO is a flight safety (not an aviation security) assessment. To this end, TCO addresses security-related issues only to the extent that these are relevant to flight safety and part of an ICAO standard applicable to air operators pursuant to ICAO Annex 6 (reinforced cockpit door, security training programs, etc.). ACC3 is subject to a separate EU regulation that is unrelated to the TCO Regulation.