– Visualizing further the example on the ADI Verified using the parallel magnetic track.Position verification radial calculated using the 20/T method.Check radial (Cr): calculation method 40/T (with the tail of the needle).Abeam QDM: is perpendicular to the track (using the needle arrowhead).Know how to calculate rapidly (3 radials, the “skeleton” of the racetrack) Note: All turns should be made at rate one (except for correction of overshoot or undershoot).Ĭall-out: “RACETRACK OR HOLDING PATTERN ON INBOUND RADIAL 270, RIGHT TURN, OUTBOUND TIME 1 MINUTE”.Įxecution and verification of racetrack or holding pattern: A second turn (procedure turn for a racetrack).An outbound time or a defined fix (distance, beacon or radial).A turn direction (the standard turn is to the right).A fix (beacon, radial intersection, DME distance).Racetrack or holding pattern requirements: Remember safety altitude which may vary during the radial change procedure.Bad anticipation, at the end of the exercise the 10° value is often incorrect due to wind.Integrate the wind factor throughout the manoeuvre and joining turn towards the desired track.Heading stable, calculation of next track.The calculation should be made on crossing each radial. Left turn to approximate heading of 330°.ģ0°/40° METHOD (for an optimum flight path in terms of time at three minutes before the station) Call out: “INTERCEPT INBOUND RADIAL USING 30°/40° METHOD”. Calculate next heading (if left turn then closing turn will be to the right and vice versa…)Īircraft is currently on inbound radial 180, intercept inbound radial 240.Visualise the next radial 10° further along.Turn direction and calculation of magnetic track.
Overview: (angular difference of 20° to 60°) To be able to line up quickly on a reference radial while approaching overhead station. Turning the wrong way.ģ0°/40° radial changes are aimed at optimising the flight path time for a procedure (required by pilot or ATC). HSI error: setting the course index 180° in the opposite direction.Visualize the turn direction and the approximate TRK (m) (010 – 020)ġ-> Visualization and projection onto ADIĤ-> When established on heading: set the navigation instrument for the desired track and crosscheckĥ-> Calculate T2 and the anticipation 20/T2′Ħ-> Add the effect of wind during the turn to the anticipationĨ-> At the end of the intercepting turn and with wings level: start inbound timing using T2′-20″ (no wind).The radial to intercept is inbound radial 290.Intercepting the desired radial at 90°.Changing radial using the 90° interception method where the angular difference between the two radials is 30° to 60°.Know the distance from the station when the deviation in flight path has finished.Determine the moment where the deviation in flight path should begin.Anticipation with an interception angle of 90°:
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