GM36 Annex I Definitions

CAA ORS9 Decision No. 47

Text in magenta in force from 30 October 2025

INSTRUMENT APPROACH PROCEDURE (IAP)

IAPs are classified as follows:

1. non-precision approach (NPA) operation means an IAP which is designed for 2D instrument approach operations Type A which may be flown using a continuous descent final approach (CDFA) technique;

2. approach procedure with vertical guidance (APV) means a performance-based navigation (PBN) IAP designed for 3D instrument approach operations Type A; and

3. precision approach (PA) procedure means an IAP based on navigation systems designed for 3D instrument approach operations Type A or B.