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KBOS
Boston, United States
Runway 33L
Elevation16 ft asl
Weight53,411 kg
Fuel10,372 kg
Wind270° · 2 kn · 1 kn cross

Flight Score

85.68 %
KBOS
Boston, United States
Runway 04R
Elevation16 ft asl
Weight53,088 kg
Fuel879 kg
Wind270° · 2 kn · 2 kn cross
25 Jul 2026 0:03 12 nm Boeing 737-800 9,493 kg
Departure Score
86.26 %
Enroute Score
97.21 %
Arrival Score
73.56 %

What went well

Touchdown 83 m in — inside the full-score zone
Straight touchdown — 2.06 m off the centreline, no bounce
Flare on profile — 97 %

What held you back

Arrival Approach — GPWS warning, then landing lights off should be on; 300 ft gate 43 %, −6.35 points
Departure Climb 3 — gear not retracted; Landing gear up at 0 ft agl at 0 %, bank angle up to 35.8 ° at 46 %, −3.46 points
Arrival Touchdown — GPWS warning; Speed at touchdown 159 kt at 60 %, Touchdown rate was -230 fpm at 85 %, −1.24 points

Next time

Departure

Raise the gear lever promptly once a positive climb is confirmed, before reaching the target retraction height.

What happened: Gear retraction was delayed, with the gear not coming up until 0 ft agl.

Watch for: Landing gear: up by the normal retraction gate

See Departure Climb 3

Arrival

Reduce power earlier on final so the speed is back to 131 kt before the stabilisation gate, not just by the threshold.

What happened: Speed was still fast at the stabilisation gate, and crossing the threshold 29 kt above target usually carries a fast touchdown with it.

Watch for: Airspeed indicator: 131 kt at the threshold.

See Arrival ApproachArrival LandingArrival Touchdown

Preparing for a stable approach will give you time to decide on whether to attempt the landing or going around. Too much altitude with a high sink rate will result in carrying too much speed onto the runway. Configuring flaps and the gear late also won't help the speed decay.

Read more in The Stabilised Approach

Start to finish · 10 stages, 9 scored

The flight story

Departure One segment per stage, in flight order — colour is the score band. Drag the bar to move along the flight, or click a stage card to open its detail. Arrival
Departure Runway Entry Entering runway 33L at KBOS Logan International Airport, Average speed was 0 kt.
ScoreDescriptionStartProfileEnd
Info Average speed 0 kt0 kt min to max 0 kt 0 0 kt
Info Average pitch angle -0.8 °-0.8 ° min to max -0.8 ° -0.8 -0.8 °
Info Average bank angle 0.0 °0.0 ° min to max 0.0 ° 0.0 0.0 °
Info Average g force 0.23 g0.00 g min to max 0.92 g 0.00 0.92 g

Events

Info Battery Master On 8 ft agl
Info Engine 1 Started 8 ft agl
Info Engine 2 Started 8 ft agl
Info Beacon Lights Switched On 8 ft agl
Info Landing Lights Switched On 8 ft agl
Info Navigation Lights Switched On 8 ft agl
Info Strobe Lights Switched On 8 ft agl
Info Taxi Lights Switched On 8 ft agl
Info Autopilot Master Switched On 8 ft agl
Info Landing Gear Down 8 ft agl
Info Flaps Position 3 8 ft agl
Info Flaps Fully Retracted 8 ft agl
Info Flaps Position 3 8 ft agl · 1 kt
Info Flaps Fully Retracted 8 ft agl · 1 kt
Departure Roll 87.34Departure roll runway 33L at KBOS Logan International Airport. Takeoff distance 875 m 28 % of runway. Liftoff speed was 146 kt. Local weather - Temperature 16 °C. Wind 2 kt at 270 °. Crosswind: 1 kt Headwind: 1 kt.
ScoreDescriptionStartProfileEnd
100 % Takeoff distance 875 m28 % of runway
100 % Liftoff speed was 146 ktTarget 146 kt
62 % Runway alignment max 13.56 m left13.56 m left to 0.00 m left 1.78 13.56 m
100 % Average g force 1.00 g0.93 g min to max 1.02 g 1.00 1.02 g
100 % Takeoff Bounce
Info Average pitch angle 0.3 °-1.1 ° min to max 6.8 ° -1.1 6.8 °
Info Average bank angle 0.2 °0.0 ° min to max 0.7 ° 0.0 0.7 °

Events

Fail Landing Lights
Info Flaps Position 3 8 ft agl · 1 kt
Info Flaps Position 2 8 ft agl · 1 kt
Info Flaps Position 3 8 ft agl · 1 kt
Departure Climb 1 99.28Departure climb to 50 ft agl from runway 33L KBOS Logan International Airport.
ScoreDescriptionStartProfileEnd
97 % Heading variation -1.1 °-1.3 ° min to max -0.9 ° -0.9 -1.3 °
100 % Average speed 157 kt147 kt min to max 167 kt 147 167 kt
100 % Average bank angle 0.6 °0.5 ° min to max 1.3 ° 0.7 1.3 °
100 % Average g force 1.13 g1.03 g min to max 1.16 g 1.03 1.15 g
Info Average VSI 577 fpm152 fpm min to max 1,072 fpm 152 1,072 fpm
Info Average altitude 6 ft agl0 ft agl min to max 22 ft agl 0 22 ft agl
Info Average pitch angle 8.8 °6.9 ° min to max 10.4 ° 6.9 10.4 °
Departure Climb 2 100.00Departure climb to 400 ft agl from 33L KBOS Logan International Airport.
ScoreDescriptionStartProfileEnd
100 % Heading variation -1.3 °-1.4 ° min to max -1.3 ° -1.3 -1.3 °
100 % Average speed 174 kt167 kt min to max 189 kt 167 189 kt
100 % Average bank angle 1.8 °0.1 ° min to max 2.4 ° 1.4 0.5 °
100 % Average g force 1.08 g0.93 g min to max 1.15 g 1.15 0.95 g
Info Average VSI 1,515 fpm1,095 fpm min to max 2,010 fpm 1,095 2,010 fpm
Info Average altitude 85 ft agl23 ft agl min to max 342 ft agl 23 342 ft agl
Info Average pitch angle 10.1 °8.4 ° min to max 10.7 ° 10.5 8.6 °
Departure Climb 3 58.44Departure climb to 1,000 ft agl from 33L KBOS Logan International Airport.
ScoreDescriptionStartProfileEnd
100 % Climb speed 190 kt188 kt min to max 191 ktTarget 179 kt, 11 kt fast 190 188 kt
46 % Average bank angle 22.2 °1.0 ° min to max 35.8 ° 1.0 35.8 °
92 % Average g force 1.23 g0.91 g min to max 1.37 g 0.91 1.32 g
0 % Landing gear up at 0 ft aglTarget by 400 ft agl
Info Heading variation -1.6 °-2.2 ° min to max -1.3 ° -1.3 -2.2 °
Info Average VSI 2,520 fpm1,901 fpm min to max 3,359 fpm 1,964 3,359 fpm
Info Average altitude 495 ft agl373 ft agl min to max 613 ft agl 373 613 ft agl
Info Average pitch angle 12.4 °8.1 ° min to max 15.3 ° 8.1 15.3 °

Events

Fail Gear Not Retracted
Enroute Climb 94.44Enroute climb started overhead KBOS Logan International Airport Boston (Massachusetts, United States). Climbing from 698 ft asl to 1,578 ft asl, an increase of 879 ft in 1 minutes and covering 3 nm.
ScoreDescriptionStartProfileEnd
100 % Average speed 197 kt179 kt min to max 208 kt 186 206 kt
86 % Average bank angle 19.2 °0.0 ° min to max 46.9 ° 36.8 0.5 °
99 % Average g force 1.09 g0.63 g min to max 1.44 g 1.30 0.96 g
Info Average VSI 1,016 fpm-378 fpm min to max 3,760 fpm 3,586 22 fpm
Info Average altitude 1,425 ft asl698 ft asl min to max 1,594 ft asl 698 1,578 ft asl
Info Average pitch angle 6.4 °1.2 ° min to max 15.9 ° 15.8 3.3 °
Info Turn coordination 00 min to max 0 0 0

Events

Info Flaps Position 2 1,374 ft agl · 184 kt
Info Flaps Position 1 1,404 ft agl · 189 kt
Info Flaps Fully Retracted 1,519 ft agl · 207 kt
Enroute Descent 99.99Enroute descent started overhead South Boston (Massachusetts, United States). Descent from 1,578 ft asl to 96 ft asl, a decrease of 1,482 ft in 2 minutes and covering 7 nm.
ScoreDescriptionStartProfileEnd
100 % Average speed 182 kt147 kt min to max 217 kt 206 167 kt
100 % Average bank angle 18.6 °0.7 ° min to max 34.9 ° 0.9 2.7 °
99.9 % Average g force 1.08 g0.81 g min to max 1.38 g 0.92 1.09 g
Info Average VSI -697 fpm-1,600 fpm min to max 1,361 fpm -63 -861 fpm
Info Average altitude 642 ft asl96 ft asl min to max 1,578 ft asl 1,578 96 ft asl
Info Average pitch angle 3.5 °-1.2 ° min to max 12.1 ° 2.9 6.2 °
Info Turn coordination 00 min to max 0 0 0

Events

Fail GPWS Warning Activated 229 ft agl · 151 kt
Fail GPWS Warning Activated 273 ft agl · 163 kt
Info Flaps Position 2 1,533 ft agl · 214 kt
Info Flaps Fully Retracted 1,530 ft agl · 216 kt
Info Flaps Position 1 1,397 ft agl · 220 kt
Info Flaps Position 2 1,187 ft agl · 220 kt
Info Flaps Position 3 1,100 ft agl · 218 kt
Info Flaps Position 4 1,013 ft agl · 214 kt
Info Flaps Position 5 596 ft agl · 195 kt
Info Flaps Position 6 658 ft agl · 192 kt
Info Flaps Fully Retracted 546 ft agl · 179 kt
Info GPWS Warning Deactivated 234 ft agl · 159 kt
Arrival Approach 42.86Final approach to runway 04R at KBOS Logan International Airport. Descent from 339 ft agl to 17 ft agl in 20 seconds. Scored on the stabilisation gates.
ScoreDescriptionStartProfileEnd
100 % Gear downpassed
0 % Landing flapfailed
100 % Sink ratepassed
100 % On glideslopepassed
0 % On centrelinefailed
0 % On speedfailed
0 % Wings levelfailed

Events

Fail GPWS Warning Activated 273 ft agl · 163 kt
Fail Landing Lights OFF should be ON 96 ft agl
Arrival Landing 88.93Landing on runway 04R at KBOS Logan International Airport, runway length 2,698 m. Good threshold height. Threshold speed was too high at 160 kt.
ScoreDescriptionStartProfileEnd
60 % Threshold speed was too high at 160 kt. Target 131 kt
100 % Good threshold height.Target 50 ft agl
97 % Excellent landing flare
96 % Runway alignment max 4.91 m right3.35 m right to 4.91 m right -4.91 -3.35 m
100 % Average bank angle 0.2 °0.2 ° min to max 0.2 ° 0.2 0.2 °
100 % Average g force 0.99 g0.97 g min to max 1.00 g 1.00 0.97 g
Info Average speed 160 kt159 kt min to max 160 kt 160 159 kt
Info Average VSI -162 fpm-184 fpm min to max -154 fpm -156 -184 fpm
Info Average altitude 2 ft agl1 ft agl min to max 3 ft agl 3 1 ft agl
Info Average pitch angle 6.2 °6.1 ° min to max 6.6 ° 6.6 6.2 °

Events

Fail GPWS Warning Activated still on from Enroute Descent 273 ft agl · 163 kt
07501123344657Runway Distance mLanding Height ft075-25-20-15-10-50510152025Runway Distance mRunway Width m
Arrival Touchdown 88.88Touchdown distance was good at 82 m. Touchdown speed at 159 kt was too fast. Touchdown rate was fair at -230 fpm. Runway touchdown position was slightly misaligned by 3.3 m from centreline. Local weather - Temperature 18 °C. Wind 2 kt at 270 °. Crosswind: 2 kt Tailwind: 1 kt.
ScoreDescriptionStartProfileEnd
85 % Touchdown rate was -230 fpm.
100 % Touchdown distance was 83 mTarget 457 m
60 % Speed at touchdown 159 ktTarget below 128 kt
99 % Runway alignment max 3.35 m right2.74 m right -3.35 -2.06 m
100 % Average bank angle 0.4 °0.1 ° min to max 0.8 ° 0.2 0.8 °
100 % Average g force 1.05 g0.94 g min to max 1.20 g 0.97 1.13 g
100 % Landing Bounce
Info Average speed 159 kt159 kt min to max 159 kt 159 159 kt
Info Average pitch angle 6.3 °6.2 ° min to max 6.4 ° 6.2 6.4 °

Events

Fail GPWS Warning Activated still on from Enroute Descent 273 ft agl · 163 kt

Takeoff

100.00Takeoff roll875 m · 28 %
100.00Liftoff speed146 kt · on target
61.69Runway alignment13.56 m L
OkBounce on takeoffNone
99.28Rate of climb576 fpm

Landing

The threshold, the flare and the hold-off. The approach that led to it is the stabilisation gates below.

100.00Threshold height3 ft
59.83Threshold speed160 kt · target 131, 29 fast
96.23Centreline offset4.91 m R
Flare 97.41Excellent landing flare

The stabilisation gates

One stabilised approach gate: seven checks where the approach path is 300 ft above the runway. The 1,000 ft gate was not assessed, because the approach did not join final that far out. These checks are the approach's score.

Seven checks, one gate300 ft 42.863 of 7
Gear down
Landing flap
Sink rate
On glideslope
On centreline
On speed
Wings level

At the 300 ft gate: no landing flap set, centreline 8.5° off, against a 1° limit, wings 25° of bank, against a 10° limit and speed 32 kt FAST on the reference speed of 131 kt.

The approach, gate by gate

Gate Height Centreline Speed
1.0 nm 324 ft 9.36° R +32 kt
0.5 nm 89 ft 1.38° R +36 kt
THR 3 ft 4.97 m R +29 kt

Touchdown on KBOS 04R

Past threshold100.00
83m
Centreline98.90
2.06m R
Speed59.76
159kttarget 127, 32 fast
Touchdown rate85.45
-230fpm
Impact100.00
1.20G
BouncesOk
None

Side view — the last 1,524 m of the approach.

3 ft over the threshold · target 50 ft 80 ft400 Ideal — 50 ft, down at 305 m This flight — 3 ft, down at 83 m

Plan view — the first 1,524 m of the 2,698 m runway, to the same scale as the side view.

5001,0001,500 THRESHOLD CROSS 1 kn FULL SCORE TO 503 M 83 m past threshold CLEARED

The 83 m touchdown sits inside the full-score zone. The arrival was smooth.

Runway used 83 m of 2,698 m · 3 %

The rest of the report

Explore in detail

Flight narrative

The aircraft taxied from the parking area to runway 33L, a movement that required less than 1 minute and covered less than 1 nm.

On departure roll on runway 33L at KBOS Logan International Airport, the Boeing 737-800 accelerated through a takeoff distance of 875 m, representing 28 % of the runway, and lifted off at 146 kt. Ambient conditions were 16 °C with a wind of 2 kt from 270°, including a 1 kt crosswind and a 1 kt headwind.

Climb commenced overhead KBOS, rising from 698 ft asl to 1,578 ft asl, an increase of 879 ft achieved in 1 minutes while covering 3 nm.

Descent began overhead South Boston, descending from 1,578 ft asl to 96 ft asl, a loss of 1,482 ft in 2 minutes and traversing 7 nm.

The final approach to runway 04R at KBOS was executed from the south, with a heading of 19.0° at 0 nm and an altitude of 79 ft agl.

Landing on runway 04R, which measures 2,693 m, the aircraft recorded a threshold speed of 160 kt, touchdown distance of 77 m, and touchdown speed of 159 kt. The vertical speed at touchdown was minus 184 fpm and runway alignment was very good. Weather at the time was 18 °C with a wind of 2 kt from 270°, a 2 kt crosswind and a 1 kt tailwind.

Total flight distance was 11nm taking 3 and used 9,493 kg of fuel.

Flight map
Replay this flight in 3D The full flight path over the terrain with every stage, event and score along the route.
Takeoff report
Takeoff on runway 33L at KBOS Logan International Airport in the Boeing 737-800
86.26 %
87.34 %
Takeoff Roll
Departure roll runway 33L at KBOS Logan International Airport. Takeoff distance 875 m 28 % of runway. Liftoff speed was 146 kt. Local weather - Temperature 16 °C. Wind 2 kt at 270 °. Crosswind: 1 kt Headwind: 1 kt.
Takeoff Distance
100 %
Roll distance of 875 m using 28.49 % of runway
Liftoff Speed
100 %
Liftoff speed was 146 kn - Target 146 kn
Alignment
61.69 %
13.56 m left to 0.00 m left
Bounce
100 %
No Bounce Detected
Strobe Lights
100 %
Switched On
Landing Lights
0 %
Switched On
G
100 %
1.5 1 0.5
IAS kt
Info
150 75 0
Bank °
Info
1 0.5 0
Pitch °
Info
7 3 -1
02505007501,0001,2501,5001,7502,0002,2502,500-25-20-15-10-50510152025 Runway Distance m Runway Alignment to End of Runway m
99.28 %
Climb 1
Departure climb to 50 ft agl from runway 33L KBOS Logan International Airport.
Alignment
97.11 %
2 0 -2
IAS kt
100 %
170 155 140
Bank °
100 %
2 1 0
G
100 %
1.5 1 0.5
Pitch °
Info
11 8.5 6
Climb Rate fpm
Info
1,100 500 -100
100 %
Climb 2
Departure climb to 400 ft agl from 33L KBOS Logan International Airport.
Alignment
100 %
2 0 -2
IAS kt
100 %
190 175 160
Bank °
100 %
3 1.5 0
G
100 %
1.5 1 0.5
Pitch °
Info
11 9.5 8
Climb Rate fpm
Info
2,100 1,500 900
58.44 %
Climb 3
Departure climb to 1,000 ft agl from 33L KBOS Logan International Airport.
Alignment
0 %
2 0 -2
IAS kt
100 %
200 190 180
Bank °
46.1 %
36 19 1
G
92.24 %
1.5 1 0.5
Pitch °
Info
16 12 8
Climb Rate fpm
Info
3,400 2,600 1,800
02505007501,0001,2501,5001,7502,0002,2502,5000112224336448560 Runway Distance m Height at End of Runway ft
00.250100200300400500 Climb Distance NM Climb Profile to 1,000 ft
00.25-60-48-36-24-1201224364860 Climb Distance NM Runway Alignment (in m) to 1,000 ft
Landing report
Landing on runway 04R at KBOS Logan International Airport in the Boeing 737-800
Landing Score 88.91 %
Landing Summary

The Boeing 737-800 completed the final approach to runway 04R at KBOS Logan International Airport on a heading of 19.0° while 0 nm from the threshold and 79 ft AGL, with a temperature of 18 °C, wind 2 kt from 270°, a 2 kt cross-wind component and a 1 kt tail-wind component. The aircraft’s overall landing score was 92.5 %.

At the threshold the height was reported as good, but the threshold speed was too high at 160 kt.

Touchdown occurred 77 m from the runway threshold, with a touchdown speed of 159 kt that was excessively fast, a vertical rate of -184 fpm that was good, and runway touchdown alignment that was very good.

Reduce the approach and flare speeds to bring the threshold speed within the target range and to achieve a lower touchdown speed, thereby improving energy management while preserving the already good alignment and touchdown point.

42.86 %
Approach
Final approach to runway 04R at KBOS Logan International Airport. Descent from 339 ft agl to 17 ft agl in 20 seconds. Scored on the stabilisation gates.
Glideslope °
4 3 2
IAS kt
168 164 160
Alignment
0.5 0 -0.5
Bank °
29 15 0
G
1.5 1 0.5
Descent Rate fpm
-157 -828 -1,500
00.250.50.7511.251.51.7522.252.52.7533.253.53.7540100200300400 Distance to Touchdown NM Approach Height ft
00.250.50.7511.251.51.7522.252.52.7533.253.53.754-380-285-190-95095190285380 Distance to Touchdown NM Approach Runway Alignment m
88.93 %
Landing
Landing on runway 04R at KBOS Logan International Airport, runway length 2,698 m. Good threshold height. Threshold speed was too high at 160 kt.
Height
100 %
Good threshold height. Target 50 ft agl
Speed
59.83 %
Threshold speed was too high at 160 kt. Target 131 kt
Flare
97.41 %
Excellent landing flare
Centreline ft
96.23 %
100 0 -100
Bank °
100 %
1 0.5 0
G
100 %
1.5 1 0.5
IAS kt
Info
160 155 150
Pitch °
Info
7 6.5 6
Descent Rate fpm
Info
-154 -177 -200
07501123344657 Runway Distance m Landing Height ft
075-25-20-15-10-50510152025 Runway Distance m Runway Width m
88.88 %
Touchdown
Touchdown distance was good at 82 m. Touchdown speed at 159 kt was too fast. Touchdown rate was fair at -230 fpm. Runway touchdown position was slightly misaligned by 3.3 m from centreline. Local weather - Temperature 18 °C. Wind 2 kt at 270 °. Crosswind: 2 kt Tailwind: 1 kt.
Touchdown
85.45 %
Touchdown rate was fair at -230 fpm.
Speed
59.76 %
Touchdown speed at 159 kt was too fast. Target below 128 kn
Distance
100 %
Touchdown distance was good at 82 m.
Alignment
98.9 %
Runway touchdown position was slightly misaligned by 3.3 m from centreline.
Bank
100 %
Bank angle 0.4 °
G
100 %
G 1.05 g
Bounce
100 %
No Bounce Detected
Metrics
Metrics

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