I've tried to coerce some path smoothing algorithms out of claude and I think one thing it came up with is an improvement, but not great. There's inherent noise in the MLAT based track. However for the Nieuwsblad video there is a path for this helicopter that matches up pretty well even in the original MLAT track from ADSBx without any smoothing applied.
The top row of windows on the SW side of the office building looks like about 36m above ground.
https://www.metabunk.org/sitrec/?cu...ls_g16_smoothed_track_only/20251106_073050.js
The HLN video is harder to match up with this flight of G16. The video shows the aircraft moving to the left and then moving to the right.
I noticed
@flarkey noted the initial airport closure was around 18:40 UTC but I was looking at later flights as well. The source referred to in the HLN article says there were two incidents with a drone. And... going back on ADSBx, there was indeed two flight of G16 on MLAT.
So there were two periods of airspace closure. And
both coincide with periods where the military helicopter G16 was flying close to airport traffic and over the airport itself.
18:40 BEL2UE aborts landing and airport closes:
20:36 TAY1804 aborts landing and airport closes:
Here is a timeline (UTC) of those two events and their complete alignment with times that G16 was flying close to the head of runway 19:
18:33 ROT374W takes off
18:33 BCS225P lands
18:37 LZB407 takes off
18:37 TVS6SH takes off
18:40 MAC116 takes off
LZB407 lands runway 19
G16 ~2.45 mile lateral <100ft vertical from BEL2UE approaching runway 19
BEL8AJ following close behind BEL2UE in queue probably sees G16 flying near approach path at around the same altitude
18:41 BEL2UE aborts landing, begins to climb after passing G16
18:43 BEL8AJ does flyover of runway 19 at ~4kft
18:44 BEL4WF does flyover of runway 19 at ~4kft
18:47 VLG89TX does flyover of runway 19 at ~4kft
G16 flies directly across the path VLG89TX would have been on if it tried to land.
18:51 G16 gets too low and MLAT indicates it as on the ground, but it keeps moving around
MLAT lat/lon positions are probably is very very inaccurate during this 3 minute period
18:54 G16 track stops moving on ground
19:00 SAS69X flyover at 7kft
19:23 AAB28D (small cessna jet) flyover at ~7500ft
---- airport resumes
20:09 BEL8RD takes off
20:10 MAC112 takes off
20:12 RAM831F takes off
20:13 BEL2LG takes off
20:19 BOX396 lands
20:28 BEL2PB takes off
20:33 SXS3KB takes off
20:36 TAY1804 does flyover on landing runway, at 3000ft
---- TAY1804 aborted landing
20:33:10 TAY1804 is descending
20:34:30 TAY1804 at 2275ft GPS
20:34:40 TAY1804 at 2000ft GPS
20:34:50 TAY1804 at 1975ft GPS
20:35:00 TAY1804 at 2150ft GPS, position 50.987°, 4.531°
20:35:10 TAY1804 at 2425ft GPS, position 50.982°, 4.529°
20:35:20 TAY1804 at 2950ft GPS, position 50.975°, 4.527°
20:35:30 TAY1804 at 3275ft GPS, position 50.968°, 4.524°
20:35:40 TAY1804 at 3325ft GPS, position 50.961°, 4.522°
20:35:50 TAY1804 at 3175ft GPS, position 50.948°, 4.519°
20:36:00 TAY1804 at 3100ft GPS, position 50.940°, 4.517°
20:36:10 TAY1804 at 3125ft GPS, position 50.935°, 4.515°
20:36:20 TAY1804 at 3275ft GPS, position 50.920°, 4.512°
20:36:30 TAY1804 at 3375ft GPS, position 50.915°, 4.511°, flies over runway 19
G16 MLAT track appears, at 225ft. Directly next to the head of runway 19 that TAY1804 was targeting. G16 have been airborne for some time prior but not tracked in the MLAT data.
---- Closure. G16 flies around.
21:03 G16 helicopter lands
22:08 LZB408 takes off