Corrigendum No. 1 15/2/61 INTERNATIONAL STANDARDS AND RECOMMENDED PRACTICES AERONAUTICAL INFORMATION SERVICES ANNEX 15 TO THE CONVENTION ON INTERNATIONAL CIVIL AVIATION SECOND EDITION - DECEMBER 1960 CORRIGENDUM No. 1 To English text only 1. Page 22 NOTAM Code - Decode - Fourth and Fifth Letters Amend the first word of the signification for AB to read "Usable. . . " Page 34 Abbreviations - Decode Amend "NDRH to read M'cNDBH. 2. Record entry of the corrigendum on page 2. -END - INTERNATIONAC CIVIL AVIATION ORGANIZATION