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MY FS FLIGHTS
Flight Score
Arrival
Reduce power earlier on final so speed is back to 123 kt before the gate, not after it.
What happened: Speed control was already loose at the stabilisation gate, and this flight crossed the threshold at 133 kt against a target of 123 kt, 10 kt fast. Carrying excess speed into the gate like this usually carries straight through to a fast threshold crossing.
Watch for: Airspeed indicator, targeting 123 kt by the gate and held to 123 kt at the threshold.
The point is that every knot above it 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 for "the plane just wouldn't come down" is never in the flare. It was decided three miles earlier, on final, at the airspeed indicator.
Read more in Bush Flying 101Start to finish · 19 stages, 17 scored
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The threshold, the flare and the hold-off. The approach that led to it is the stabilisation gates below.
Two stabilised approach gates, each with seven checks, where the approach path is 1,000 ft and 500 ft above the runway. They are the approach's score: the checks passed out of the checks that ran.
At the 1,000 ft gate: sink rate 1,529 fpm, more than the glideslope needed, glideslope 5.3° against the runway's 3°, centreline 2.7° off, against a 1° limit and speed 35 kt FAST on the reference speed of 123 kt.
At the 500 ft gate: sink rate 1,650 fpm, more than the glideslope needed, glideslope 4.5° against the runway's 3°, centreline 1.2° off, against a 1° limit and speed 29 kt FAST on the reference speed of 123 kt.
The approach, gate by gate
Side view — the last 1,524 m of the approach.
Plan view — the first 1,524 m of the 2,726 m runway, to the same scale as the side view.
The 260 m touchdown sits inside the full-score zone. The arrival was smooth.
The rest of the report
The Boeing 707-320 taxied from the parking area to runway 07L at PANC Ted Stevens Anchorage International Airport; the taxi-out required 13 minutes and covered 3 nm.
During the departure roll on runway 07L, the aircraft used 1,420 m of runway, representing 44 % of the available length, and lifted off at 151 kt. Ambient conditions were a temperature of 22 °C, wind 3 kt from 225°, a 2 kt cross-wind component and a 2 kt tail-wind component.
Climb commenced 1 mile southeast of LHD Lake Hood Anchorage, with the jet ascending from 1,044 ft asl to 34,996 ft asl - a gain of 33,952 ft - over 21 minutes while covering 100 nm.
The first cruise segment began 6 miles west of PAJO Johnstone Point Airport and lasted 35 minutes, during which 256 nm were flown at level altitude.
Descent started 4 miles west of A69 Tanis Mesa Airport Yakutat, dropping from 34,999 ft asl to 9,362 ft asl - a loss of 25,637 ft - in 12 minutes and spanning 77 nm.
A subsequent cruise phase originated 20 miles west of BQV Bartlett Cove Seaplane Base Gustavus, lasting 5 minutes and covering 19 nm.
The next descent began 2 miles southwest of the same Bartlett Cove facility, descending from 8,992 ft asl to 7,064 ft asl - a reduction of 1,928 ft - in 3 minutes over 12 nm.
A further cruise segment was initiated 3 miles southwest of EXI Excursion Inlet Seaplane Base, lasting 5 minutes and encompassing 17 nm.
The final descent started 6 miles northwest of PANR Funter Bay Seaplane Base, falling from 6,593 ft asl to 1,935 ft asl - a decrease of 4,658 ft - in 3 minutes while covering 10 nm.
The aircraft entered the final approach to runway 08 at PAJN Juneau International Airport from the west, on a heading of 110.0° at 3 nm and 1,887 ft agl.
Landing on runway 08, which is 2,726 m long, the threshold speed was slightly below target at 133 kt. Touchdown occurred 263 m down the runway at 129 kt with a touchdown rate of minus 287 fpm; the touchdown point was 3.9 m off centreline. Local weather remained temperature 22 °C, wind 3 kt from 225°, cross-wind 2 kt and tail-wind 1 kt. Total landing distance was 1,252 m, representing 46 % of the runway.
Runway rollout alignment was reported as very good.
The aircraft taxied from the runway to the parking area in 4 minutes, covering less than 1 nm.
In total, the flight covered 501 nm, required 95 minutes of airborne time and consumed 7,404 kg of fuel.
The Boeing 707-320 approached runway 08 at PAJN Juneau International Airport from the west on a heading of 110.0° at 3 nm and 1,887 ft agl; the final approach was assessed as unstable at the 1,000 ft gate because the sink rate was too high and the aircraft was off the glideslope.
During the threshold and flare segment the aircraft established a threshold speed of 133 kt, slightly below the target, and the threshold height was reported as good.
Touchdown occurred 263 m down the runway at a speed of 129 kt, both judged good, with a vertical rate of -287 fpm rated fair; the touchdown point was offset 3.9 m from the centreline.
The rollout covered a total distance of 1,252 m, representing 46 % of the 2,726 m runway, and runway alignment during rollout was described as very good.
To convert the high overall score into an even more consistent performance, focus on achieving a stabilized approach by the 1,000 ft gate to eliminate excess sink and glideslope deviation, and refine lateral control to reduce the 3.9 m centreline offset at touchdown.
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