ICAO Circular 35-AN/O CORRIGErnuM 14.7,53 INTERNATIONAL CIVIL AVIATION ORGANIZATION ICAO Circular 35-AN/O NORTH ATL4NTIC TRIAL OF AH AUGMENTED PROGRAMlviE OF UPPW AIR OBSERVATIONS CORRIGENDUM Page 7, paragraph 17,3, line 6, Amend to read - nthat forecasting errors tend to be smaller, ...... n