ED
Decision 2022/012/R
INSTRUMENT
APPROACH OPERATIONS
(a) Depending on the instrument approach
procedure (IAP) in use, the lateral and vertical navigation guidance for an
instrument approach operation may be provided by:
(1) a ground-based radio navigation aid; or
(2) computer-generated navigation data from
ground-based, space-based or self-contained navigation aids or a combination
of these.
(b) A non-precision approach (NPA) procedure
flown as CDFA with vertical path guidance calculated by on-board equipment is
considered to be a 3D instrument approach operation. Depending on the
limitations of the equipment and information sources used to generate vertical
guidance, it may be necessary for the pilot to cross-check this guidance
against other navigational sources during the approach and to ensure that the
minimum altitude/height over published step-down fixes is observed. CDFAs with
manual calculation of the required rate of descent are considered 2D
operations.
(c) Further guidance on the classification of
an instrument approach operation based on the designed lowest operating minima
is contained in Appendix J to ICAO Doc 9365 Manual of All-Weather Operations,
Fourth Edition, 2017.
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