Aircraft Operations

Chapter 6
MISSED APPROACH SEGMENT
6.1 GENERAL
6.1.1 During the missed approach phase of the instrument approach procedure, the pilot is faced with the
demanding task of changing the aircraft configuration, attitude and altitude. For this reason, the design of the missed
approach has been kept as simple as possible and consists of three phases (initial, intermediate and final). See
Figure I-4-6-1.
6.1.2 Purpose
Only one missed approach procedure is established for each instrument approach procedure. It is designed to provide
protection from obstacles throughout the missed approach manoeuvre. It specifies a point where the missed approach
begins, and a point or an altitude/height where it ends.
6.1.3 The missed approach should be initiated not lower than the decision altitude/height (DA/H) in precision
approach procedures, or at a specified point in non-precision approach procedures not lower than the minimum descent
altitude/height (MDA/H).
6.1.4 It is expected that the pilot will fly the missed approach procedure as published. If a missed approach is
initiated before arriving at the missed approach point (MAPt), the pilot will normally proceed to the MAPt (or to the
middle marker fix or specified DME distance for precision approach procedures) and then follow the missed approach
procedure in order to remain within the protected airspace.
Note 1.— This does not preclude flying over the MAPt at an altitude/height greater than that required by the
procedure.
Note 2.— In the case of a missed approach with a turn at an altitude/height, when an operational need exists, an
additional protection is provided for the safeguarding of early turns. When it is not possible, a note is published on the
profile view of the approach chart to specify that turns must not commence before the MAPt (or before an equivalent
point in the case of a precision approach).
6.1.5 The MAPt in a procedure may be defined by:
a) the point of intersection of an electronic glide path with the applicable DA/H in APV or precision approaches;
or
b) a navigation facility, a fix, or a specified distance from the final approach fix (FAF) in non-precision
approaches.
When the MAPt is defined by a navigation facility or a fix, the distance from the FAF to the MAPt is normally
published as well, and may be used for timing to the MAPt. In all cases where timing may not be used, the procedure is
annotated “timing not authorized for defining the MAPt”.
I-4-6-1 23/11/06