IFR Approach procedure - Missed approach segment[PDF]
The design of the missed approach consists of the three phases:
Missed approach point (MAPt)
- The point of intersection of an electronic glide path with the applicable DA/H in APV or precision approaches
- A navigation facility, a fix or a specified distance from the final approach fix in non-precision approach
- The MAPt (any turns on the missed approach shall not begin until the aircraft reaches the MAPt).
- The middle marker fix or a specified DME distance for precision approach procedures.
- Continue the descent below DA/H or MDA/H to land with the required visual reference in sight
- Execute a missed approach.
If the visual references required to land have not been acquired when the aircraft is approaching the MDA/H, the vertical (climbing) portion of the missed approach is initiated at an altitude above the MDA/H sufficient to prevent the aircraft from descending through the MDA/H.
Missed approach gradient
The nominal missed approach climb gradient is 2.5%. Gradients of 3%, 4% or 5% may be used for aircraft of which the climb performance permits an operational advantage to be thus obtained and this is indicated on the instrument approach chart. A gradient of 2% may be used if necessary survey and safeguarding have been provided.
The initial phase of a missed approach begins at the MAPt and ends at the start of climb. This phase is critical for a pilot and needs attention on establishing the changes in aircraft configuration and starting the climb. No turns are specified in this phase.
The intermediate phase of a missed approach begins at the start of climb. The climb is continued normally straight ahead. It extends to the first point where 50m (164ft) obstacle clearance is obtained and can be maintained.
The intermediate missed approach track may be changed by a maximum of 15°. During this phase, it is assumed that the aircraft begins track corrections.
The final phase begins at the point where 50m (164ft) obstacle clearance is first obtained and can be maintained (40m (131ft) for category H). It extends to the point where a new approach, holding or a return to en-route is initiated.
Where an obstacle is located early in the missed approach procedure, the instrument approach chart is annotated:
- “Missed approach turn limited to ‘value’ KT IAS maximum”
- “Missed approach turn as soon as practicable to ‘value’ heading”
The following parameters are specific to turning missed approach:
- Bank angle = 15°
- Wind = 95% of probability on an omnidirectional basis (or 30KT where no data is available)
- Speed = missed approach range speed in the table chapter 4.
- Pilot reaction time = up to 3 seconds.
- Bank establishment time = up to 3 seconds.
- ICAO Documentation 8168 - Aircraft Operations - Volume I - Flight Procedures - 6th Edition 2010 - Section 4 - Chapter 6
- VID 150259 - Creation
- VID 531824 - Wiki Integration
DATE OF SUBMISSION
- 01:02, 14 May 2021
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