RT Phraseology for RNP IAPs at Aerodromes with AGCS

The purpose of this Supplementary Instruction (SI) is to detail changes made to the Radiotelephony Manual (CAP 413) relating to the introduction of phraseology for Air/Ground Communications Service (AGCS) radio station operators and Aerodrome Flight Information Service Officers (AFISO) who operate at aerodromes with required navigation performance (RNP) instrument approach procedures (IAPs)