Welcome to the Verify CCO Online (VCO) System of the National Commission for the Certification of Crane Operators (NCCCO). This database is a comprehensive directory of individuals who have been accredited and authorized by NCCCO to administer practical examinations for CCO certification programs. Search for a Practical Examiner To search the database please enter a valid NCCCO Practical Examiner (PE) Accreditation number and Last Name: Accreditation Number: Last Name: The National Commission for the Certification of Crane Operators (NCCCO) issues CCO cards for Practical Examiners. These cards have a brown band across the bottom.