ICAO 9274-1980 Manual on the Use of the Collision Risk Model (CRM) for ILS Operations First Edition; Reprinted January 1997; Includes Amendments No.1 and No.2-1983
1980ICAO 9274-1980 Manual on the Use of the Collision Risk Model (CRM) for ILS Operations First Edition; Reprinted January 1997; Includes Amendments No.1 and No.2-1983