missed approach point


missed approach point (MAPt)

That point in an instrument approach procedure at or before which the prescribed missed approach procedure must be initiated to ensure that the minimum obstacle clearance is not infringed. It may be the intersection of an electronic glide path with a decision height; a NAVAID (navigational aid) located on the aerodrome; a suitable fix (e.g., distance-measuring equipment, or DME); or a specified distance beyond the NAVAID or final approach fix, not to exceed the distance from the NAVAID or fix to the nearest boundary of the aerodrome. When the MAPt is defined by a navigational facility or a fix, the distance from the final approach fix (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 must be annotated “timing not authorized for defining MAPt.” See missed approach phases.