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MY FS FLIGHTS
Flight Score
Fixing the bounce
Fast at the threshold, normal flare, and the runway seems to refuse the aircraft. The instinctive fix - pushing it on - causes the next one. A fast aircraft forced onto the runway touches nosewheel-first or nearly so. The tell is a touchdown that feels soft followed by a bounce that steepens. Pilots fix the bounce recovery; the cause was the 10 knots at the threshold.
Read more in VRef ExplainedStart to finish · 24 stages, 22 scored
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The threshold, the flare and the hold-off. The approach that led to it is the stabilisation gates below.
One stabilised approach gate: five checks where the approach path is 500 ft above the runway. The 1,000 ft gate was not assessed, because the approach did not join final that far out.
Side view — the last 1,785 ft of the approach.
Plan view — the full 1,785 ft runway, to the same scale as the side view.
The 837 ft touchdown sits inside the full-score zone. The 3.81 G arrival is the firm side of smooth.
The rest of the report
The flight began with a taxiing period from the parking area to the runway, which took 15 minutes and covered a distance of 3 nautical miles. The aircraft, a PC-12, then departed from runway 02 at VNKT Tribhuvan International Airport in Kathmandu, Nepal. The takeoff distance was 3,964 feet, which accounted for 41% of the runway. The liftoff speed was 109 knots.
As the aircraft climbed out of Kathmandu, it encountered local weather conditions of 62°F temperature and a wind speed of 1 knot at 270°. The enroute climb started 1 mile north of the airport and continued for 12 minutes, covering a distance of 36 nautical miles. The aircraft climbed from 5,158 feet above sea level to 16,494 feet, an increase of 11,336 feet.
After reaching the cruising altitude, the aircraft entered a level cruise phase, which started 9 miles north of VNRC Ramechhap Airport. This phase lasted for 4 minutes and covered a distance of 18 nautical miles. The aircraft then began another climb phase, this time from 9 miles southeast of VNJI Jiri Airport. The climb from 16,453 feet to 17,271 feet took 2 minutes and covered a distance of 3 nautical miles.
The aircraft then entered another level cruise phase, which started 9 miles east of VNJI Jiri Airport. This phase lasted for 2 minutes and covered a distance of 5 nautical miles. As the aircraft approached its destination, it began a descent phase from 17,603 feet above sea level to 8,191 feet, a decrease of 9,412 feet in 6 minutes and covering a distance of 15 nautical miles.
The aircraft then began another climb phase from 5 miles northeast of VNPL Phaplu Airport. The climb from 8,217 feet to 8,690 feet took 2 minutes and covered a distance of 7 nautical miles. The final approach to runway 06 at VNLK Lukla Airport was from the southwest, with a heading of 58.0° at 1 nautical mile and -651 feet above ground level.
However, the aircraft performed a go-around at 0 feet above ground level, followed by another go-around at 102 feet above ground level, and a third go-around at 0 feet above ground level. Eventually, the aircraft landed on runway 06 at VNLK Lukla Airport, which had a length of 1,785 feet. The threshold height was significantly above the target, and the threshold speed was well above the target at 93 knots.
The touchdown point was very long, using more than 50% of the available runway. The touchdown speed was 88 knots, which was a little fast. The touchdown rate was perfect at -26 feet per minute. However, the runway touchdown position was significantly misaligned by 76 feet from the centreline. The local weather conditions at the time of landing were 20°F temperature and a wind speed of 1 knot at 29°.
The total landing distance was 1,559 feet, which accounted for 87% of the runway. The runway rollout alignment was misaligned by 75 feet from the centreline. The total flight distance was 107 nautical miles, taking 63 minutes, and the aircraft used 525 pounds of fuel.
The aircraft in question, a PC-12, has landed at VNLK Lukla Airport, with a score of 42.9%. The final approach was made from the southwest, heading 58.0° at 1 nautical mile and 651 feet above ground level (agl). The landing was conducted on runway 06, which has a length of 1,785 feet.
Upon analysis, it is evident that the aircraft had a challenging approach. The threshold height at 82 feet agl was significantly above the target, indicating that the aircraft was higher than desired at the point of threshold crossing. Additionally, the threshold speed was slightly below the target at 77 knots, suggesting that the aircraft may have been slightly slow.
However, the second approach, where the threshold height was at 85 feet agl and the threshold speed was well above the target at 93 knots, resulted in a very long touchdown point, using more than 50% of the available runway. The touchdown speed of 88 knots was also a little fast, which may have contributed to the long touchdown point. On the other hand, the touchdown rate was perfect at -26 feet per minute (fpm), indicating a smooth and controlled descent.
The local weather conditions at the time of landing were characterized by a temperature of 20°F and a wind speed of 1 knot at 29°. The crosswind and headwind components were both 1 knot, indicating minimal wind effects on the landing. Despite this, the runway touchdown position was significantly misaligned by 76 feet from the centreline, and the runway rollout alignment was also misaligned by 75 feet from the centreline.
Overall, the landing was not ideal, with several areas for improvement. The aircraft's score of 42.9% reflects the challenges faced during the landing, including the high threshold height, slow threshold speed, long touchdown point, and misaligned touchdown and rollout positions.
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