Events
Events
Events
Events
MY FS FLIGHTS
Flight Score
Arrival
Add power on final to keep the approach speed at 82 kt rather than letting it decay before the threshold.
What happened: The aircraft crossed the threshold at 66 kt, 16 kt below the target, and touchdown followed with a firm, high sink rate arrival. Crossing the threshold slow like this usually carries through to a firmer touchdown as the flare runs out of energy.
Watch for: Airspeed indicator: 82 kt at the threshold.
Every knot above Vref is stored kinetic energy, and energy stored at the threshold must be dissipated in ground effect before the aeroplane will stop flying. Because kinetic energy scales with the square of speed, the excess you must dissipate grows fast. At a 45-knot approach, five knots hot is over a tenth more speed and roughly a quarter more energy to get rid of in ground effect. This is why the fix is never in the flare. It was decided three miles earlier, on final, at the airspeed indicator.
Read more in VRef ExplainedStart to finish · 10 stages, 8 in the score
Events
Events
Events
Events
From brake release to the end of the climb, against time, then the takeoff point by point.
Rotated at 78 kt, 6 kt below the 84 kt target, and lifted off at 81 kt 0.9 s later, the nose coming up at 3.8° a second. Climb 3 averaged 103 kt, 9 kt over its 94 kt target.
Two traces from brake release: the airspeed on top, and below it the pitch, which is how far the nose is above the horizon. The dashed green line is the speed to rotate at for this aircraft at its weight, and the green dot is where the nose started to come up. The figures at liftoff are the pitch then and how fast the nose came up, in degrees a second. The shaded stretch is Climb 3, the part of the climb scored on holding the climb speed.
The takeoff, point by point
Side view from the start of the roll to the end of Climb 3 at 643 ft.
Reached 35 ft with 2,547 m of runway left; gear up at 197 ft, inside the 400 ft that gets full marks; then climbing at 1,050 fpm on average to 643 ft.
The takeoff from the side: the height above the runway against the distance along it. The numbers along the runway are the speeds reached at each point. Lifting off in the amber last quarter of the runway costs marks for the roll length. The gear-up ring is coloured by its mark. The shaded stretch is Climb 3, scored on its average speed against the target.
Plan view the roll down the 3,197 m runway.
Rolled from 36 m in, drifted 3.1 m left of the centreline and was back on it to lift off. Airborne 13 % of the way down the runway, before the 75 % line.
The roll from above, with your left at the top. The line is where the wheels went, and "widest" is the furthest you drifted off the centreline. Lifting off before the amber 75 % line gets full marks for the roll length. The arrow beside the runway is the crosswind, pointing the way the air was moving, so it pushed the aircraft that way.
The final from 4 nm.
Profile height against the 3° glideslope, with its 2° band in green.
High from 0.9 nm, where the final began, to 0.2 nm (up to 750 ft over), then back on it to the threshold.
Your height above the runway against the distance still to go. The glideslope is the steady descent path to the aiming point, 305 m past the threshold: 3° here, which is about 320 ft for every nautical mile out, crossing the threshold at about 50 ft. The row under the distances is the height it puts you at. Inside the green band your path is drawn green; outside it, amber.
Plan distance off the extended centreline, your left at the top, with the 1° band. Sideways distances are drawn 3× larger than distances along the final.
Joined 400 m right of the centreline at 0.9 nm, then inside the band from 0.2 nm to the threshold.
Looking down from above, flying left to right towards the runway: up the page is left of the centreline, down is right. Sideways distances are stretched so that small drifts show, so a line that looks wild here may be only a few tens of feet. The labels are how far off you were at each distance, amber when outside the band.
Speed against the approach speed. The green band runs from 5 kt slow to 41 kt fast at the 1,000 ft gate, closing to 25 at 500 ft and 10 at the threshold.
Inside the speed band all the way, between −16 kt and +1 kt on the approach speed of 82 kt.
Your indicated airspeed down the final, against the approach speed for this aircraft at its landing weight. The band allows 5 kt slow and more on the fast side further out, closing as you get lower, because the speed is expected to come off on the way down. The figures are knots above (+) or below (−) the approach speed.
Over the threshold
Touchdown
Excellent landing flare. It lost 1.1 points, partly for taking only 781 fpm of the sink out.
3 kt across from the right, which takes about 3° of crab to hold the centreline at 58 kt. Touched down with 3° of it still on, wings level.
Wind 270° at 8 kt · 7 kt head · 3 kt across
The wind is the one recorded at the landing, split along the runway (headwind or tailwind) and across it. To hold the centreline in a crosswind the nose points a little into wind - the crab - and is straightened with rudder just before the wheels touch, often with the into-wind wing lowered to stop the drift. These are the nose against the direction you were actually moving, and the wings, at the moment of touchdown. Shown for reading; not marked.
From 54 kt at touchdown to taxi speed (30 kt) in 8 s, an average deceleration of 0.17 g.
Your ground speed from the moment the wheels touched until you were down to taxi speed, against the distance rolled. A steep line is hard braking, a shallow one a long, gentle roll. For scale, an airliner's lowest autobrake setting decelerates at about 0.15 g, a medium one about 0.3 g. Shown for reading; not marked.
Side view — the last 1,524 m of the approach.
Began the flare at 31 ft, 54 m before the threshold; crossed the threshold at 10 ft, 40 ft below the 50 ft target. Touched down 88 m in, 217 m short of the ideal 305 m.
The last stretch of the approach and the touchdown, from the side. The height is stretched so that the last few feet show: 80 ft top to bottom, against 1,524 m across. The dashed line is the ideal, 50 ft over the threshold and down 305 m in. The flare ring is where you began raising the nose, and "descent slowed" is where the sink came off; the figures beside them are the sink rate, pitch and speed at that point.
Sink and pitch — through the flare, lined up with the side view.
The sink went from 940 fpm at the flare to 270 fpm at touchdown. The nose came up 6.2° on the way down.
Lined up with the side view above, so a point on one sits under the same point of the other. On top, how fast you were coming down: 0 is level, and −600 is 600 ft a minute down. Below, the pitch. In a flare the nose comes up and the descent slows towards 0. The figure at the touchdown line is your touchdown rate.
Plan view — the first 1,524 m of the 3,197 m runway, to the same scale as the side view.
Touched down 2 m left of the centreline, and stayed within 2 m of it down the rollout.
The runway from above, with your left at the top. Touching down inside the green bracket scores full marks for the distance. The shaded part is the rollout, up to where it ended. The arrow beside the runway is the crosswind, pointing the way the air was moving, so it pushed the aircraft that way.
The 88 m touchdown sits inside the full-score zone. The 266 fpm arrival was firm.
The rest of the report
The Diamond DA42 Twin Star taxied from the parking area to runway 25R at KDAB Daytona Beach International Airport in less than 1 minute, covering less than 1 nm.
During the departure roll on runway 25R, the aircraft used 440 m of runway, representing 14 % of the available length, and lifted off at 81 kt. Ambient conditions were a temperature of 16 °C, wind 13 kt from 270°, with a 5 kt cross-wind component and an 11 kt head-wind component.
Climb commenced overhead KDAB, with the aircraft climbing from 413 ft asl to 354 ft asl, an increase of 58 ft achieved in 2 minutes while covering 4 nm.
The descent phase reduced altitude from 982 ft agl to 35 ft agl in 42 seconds.
Final approach to runway 25R was executed from the north-east on a heading of 243.0°, beginning at 0 nm distance and 312 ft agl.
Landing on runway 25R, whose total length is 3,197 m, was made with a threshold speed slightly below target at 66 kt. Touchdown occurred 86 m down the runway at 58 kt, with a vertical speed of minus 249 fpm and very good alignment. Weather at the time was temperature 16 °C, wind 8 kt from 270°, a 3 kt cross-wind and a 7 kt head-wind.
Runway rollout covered a total landing distance of 239 m, equivalent to 7 % of the runway, and alignment during rollout was perfect.
In total, the flight covered 6 nm, took 3 (units as provided), and consumed 12 kg of fuel.
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