Section 120.19 - Misuse of alcohol(a) This section applies to covered employees who perform air traffic control duties directly or by contract for an employer that is an air traffic control facility not operated by the FAA or the US military.(b)Alcohol concentration. No covered employee shall report for duty or remain on duty requiring the performance of safety-sensitive functions while having an alcohol concentration of 0.04 or greater. No employer having actual knowledge that an employee has an alcohol concentration of 0.04 or greater shall permit the employee to perform or continue to perform safety-sensitive functions.(c)On-duty use. No covered employee shall use alcohol while performing safety-sensitive functions. No employer having actual knowledge that a covered employee is using alcohol while performing safety-sensitive functions shall permit the employee to perform or continue to perform safety-sensitive functions.(d)Pre-duty use. No covered employee shall perform air traffic control duties within 8 hours after using alcohol. No employer having actual knowledge that such an employee has used alcohol within 8 hours shall permit the employee to perform or continue to perform air traffic control duties.(e)Use following an accident. No covered employee who has actual knowledge of an accident involving an aircraft for which he or she performed a safety-sensitive function at or near the time of the accident shall use alcohol for 8 hours following the accident, unless he or she has been given a post-accident test under subpart F of this part or the employer has determined that the employee's performance could not have contributed to the accident.(f)Refusal to submit to a required alcohol test. A covered employee may not refuse to submit to any alcohol test required under subpart F of this part. An employer may not permit an employee who refuses to submit to such a test to perform or continue to perform safety-sensitive functions.