The DLA Contracting Officer shall provide written notification to the Defense Contract Management Agency (DCMA) Administrative Contracting Officer (ACO) through a Quality Assurance Letter of Instruction (QALI) regarding any first time production items or suppliers, and any adverse supplier or item quality history. In the case of first time production items or first time suppliers, or when there is evidence of poor quality, the ACO shall not invoke ARP until positive performance history is established. If the ACO implements ARP procedures when positive performance history is established, the ACO shall notify the DLA Contracting Officer in writing when the letter which invokes ARP is issued to the contractor. If negative quality becomes evident during contract performance, the DLA Contracting Officer shall notify the ACO through a QALI. The ACO will revoke ARP until satisfactory performance is achieved, and shall notify the DLA Contracting Officer in writing when the letter which reinstates ARP is issued to the contractor.