Section 160.072-09 - Manufacturer notification(a) Each manufacturer certifying flags in accordance with the specifications of this subpart must send written notice to the Commandant (CG-ENG), Attn: Office of Design and Engineering Systems, U.S. Coast Guard Stop 7509, 2703 Martin Luther King Jr. Avenue, SE., Washington, DC 20593-7509; (1) Within 30 days after first certifying a flag,(2) Every five years as long as the manufacturer continues to produce flags, and(3) Each time the design or construction material of the flag changes.CGD 76-183a, 44 FR 73054, Dec. 17, 1979, as amended by CGD 88-070, 53 FR 34536, Sept. 7, 1988; CGD 95-072, 60 FR 50467, Sept. 29, 1995; CGD 95-072, 60 FR 50467, Sept. 29, 1995; CGD 96-041, 61 FR 50733, Sept. 27, 1996; USCG-2009-0702, 74 FR 49237 , Sept. 25, 2009; USCG-2013-0671, 78 FR 60158 , Sept. 30, 2013