Twenty-two companies have demonstrated compliance with the American Chemistry Council (ACC) Product Approval Code of Practice for the period of June 30, 2015 through June 30, 2016. All twenty-two companies submitted a Letter of Intent. Sixteen companies completed the ACC compliance audit checklist, four companies provided verification from the ACC Monitoring Agency that no candidate engine tests were scheduled or registered and two new test sponsors (Eni S.p.A and Saudi Aramco) entered the compliance system after March 30, 2016.