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by flybucky
Thu Feb 27, 2020 12:26 am
Forum: Civil Aviation
Topic: Kobe Bryant killed in a helicopter crash
Replies: 780
Views: 117166

Re: Kobe Bryant killed in a helicopter crash

I am debating some people about wheether the helicopter pilot was circling because of the fog or because of the traffic? I am thinking fog because of how long he circled but others say pilot is faulted because he flew into the fog after routine holding for traffic. You mean when he was circling ove...

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by flybucky
Tue Feb 18, 2020 4:36 pm
Forum: Civil Aviation
Topic: Kobe Bryant killed in a helicopter crash
Replies: 780
Views: 117166

Re: Kobe Bryant killed in a helicopter crash

airplanecrazy wrote:
I have been learning how to generate better clouds and scenery in X-Plane, and I thought the improvements were enough to warrant another version.

Looks scarily realistic.

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by flybucky
Fri Feb 14, 2020 9:23 pm
Forum: Civil Aviation
Topic: Kobe Bryant killed in a helicopter crash
Replies: 780
Views: 117166

Re: Kobe Bryant killed in a helicopter crash

https://app.ntsb.gov/pdfgenerator/Repor ... m&IType=MA

Although it doesn't seem to have any new information since the Investigate Update from a week ago Feb 7.
-->

NTSB Preliminary Report released: https://app.ntsb.gov/pdfgenerator/Repor ... m&IType=MA

Although it doesn't seem to have any new information since the Investigate Update from a week ago Feb 7.

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by flybucky
Fri Feb 14, 2020 9:15 pm
Forum: Civil Aviation
Topic: Kobe Bryant killed in a helicopter crash
Replies: 780
Views: 117166

Re: Kobe Bryant killed in a helicopter crash

airplanecrazy wrote:
Looking at this some more, I now believe that KML_csv2fdr.py generated the roll angle. X-Plane is just showing what it would look like. Sorry I gave you wrong info.

No problem, I am just impressed at the work you put in to gather so many data sources!

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by flybucky
Wed Feb 12, 2020 11:58 am
Forum: Civil Aviation
Topic: Kobe Bryant killed in a helicopter crash
Replies: 780
Views: 117166

Re: Kobe Bryant killed in a helicopter crash

I think this will be my last attempt at my amateur reconstruction of the crash, at least until we get new information. This reconstruction now has an animated helicopter using the X-Plane simulator and my representation of the fog bank. wow, these reconstructions keep getting better, top notch work...

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by flybucky
Tue Feb 11, 2020 7:01 pm
Forum: Civil Aviation
Topic: Kobe Bryant killed in a helicopter crash
Replies: 780
Views: 117166

Re: Kobe Bryant killed in a helicopter crash

https://losangeles.cbslocal.com/video/4 ... r-crashes/
-->

Video of the flames immediately after the crash, taken by the mountain bikers on the tail rotor side of the trail. It doesn't really show anything new though.

https://losangeles.cbslocal.com/video/4 ... r-crashes/

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by flybucky
Sat Feb 08, 2020 3:51 pm
Forum: Civil Aviation
Topic: Kobe Bryant killed in a helicopter crash
Replies: 780
Views: 117166

Re: Kobe Bryant killed in a helicopter crash

For what it's worth, I created my rev3 version reconstruction of the crash based upon information gleaned from the NTSB update. Nice. There's your explanation of why it seemed to make a sharper left turn at the end. It was because the angle changed after impact (of course no way for you to know tha...

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by flybucky
Sat Feb 08, 2020 1:29 am
Forum: Civil Aviation
Topic: Kobe Bryant killed in a helicopter crash
Replies: 780
Views: 117166

Re: Kobe Bryant killed in a helicopter crash

The last ADS-B target was received at 1,200 feet msl approximately 400 feet southwest of the accident site. Not surprisingly, the NTSB had later ADS-B data than FR24 granular data. Comparing the plots of FR24 vs NTSB, it looks like NTSB had 4 additional ADS-B data points after FR24's last data poin...

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by flybucky
Sat Feb 08, 2020 12:00 am
Forum: Civil Aviation
Topic: Kobe Bryant killed in a helicopter crash
Replies: 780
Views: 117166

Re: Kobe Bryant killed in a helicopter crash

My comments based on the NTSB Investigative Update: First, why did the NTSB specifically call it an Investigative Update and not a Preliminary Report (they actually had to correct their original tweet )? Isn't a Preliminary Report facts-only (no conclusions) as well? Does that mean there will be ano...

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by flybucky
Fri Feb 07, 2020 11:18 pm
Forum: Civil Aviation
Topic: Kobe Bryant killed in a helicopter crash
Replies: 780
Views: 117166

Re: Kobe Bryant killed in a helicopter crash

The NTSB Investigative Update has a lot of new info, facts, and new photos/diagrams. Note: the NTSB is calling it an Investigative Update and not a Preliminary Report (what's the difference? Isn't a Preliminary Report facts-only as well?) Some interesting facts from the Investigative Update: Examina...

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by flybucky
Fri Feb 07, 2020 10:42 am
Forum: Civil Aviation
Topic: Kobe Bryant killed in a helicopter crash
Replies: 780
Views: 117166

Re: Kobe Bryant killed in a helicopter crash

I added a fog layer on top of airplanecrazy's reconstruction kml. It's a simple plane set at 1135 ft MSL (346m), which is 50 ft above the 1085 ft crash site. The mountain bikers said the fog was 50 ft above them. And another local said the fog was 300 ft above them (the neighborhood is around 800 ft...

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by flybucky
Fri Feb 07, 2020 9:24 am
Forum: Civil Aviation
Topic: Kobe Bryant killed in a helicopter crash
Replies: 780
Views: 117166

Re: Kobe Bryant killed in a helicopter crash

The weather at that LACFD was pretty good, you can clouds are fairly high and visibility good. Remember, launching is different that flying thru the weather at high speed-easier to stay below it. Every operator has the right to increase their operating minimum above what the FAA specify. What I saw...

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by flybucky
Fri Feb 07, 2020 2:37 am
Forum: Civil Aviation
Topic: Kobe Bryant killed in a helicopter crash
Replies: 780
Views: 117166

Re: Kobe Bryant killed in a helicopter crash

Here's some interesting info on the LA County Fire helicopter that was first on scene. A fire aviation reporter just happened to be at the Barton Heliport in Pacoima, CA that morning to learn about their helicopter program, when they were dispatched. He got some photos and videos of the heli taking ...

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by flybucky
Thu Feb 06, 2020 7:47 pm
Forum: Civil Aviation
Topic: Kobe Bryant killed in a helicopter crash
Replies: 780
Views: 117166

Re: Kobe Bryant killed in a helicopter crash

Here are what I believe to be two identical ADS-B entries from FlightRadar24 granular data for the flight, but I suspect they were collected by two different receivers Time hex callsign latitude longitude no_position altitude squawk speed track vspeed 2020-01-26 17:45:19Z.850 0xa9a1ad N72EX 34.1398...

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by flybucky
Thu Feb 06, 2020 7:47 pm
Forum: Civil Aviation
Topic: Kobe Bryant killed in a helicopter crash
Replies: 780
Views: 117166

Re: Kobe Bryant killed in a helicopter crash

1) Are the timestamps in the video calibrated to the same clock/precision as the timestamps in ADS-B? Even if it’s internet-synced, I can’t tell you how many supposedly synced electronics I have that are off by a few seconds or so. 2) How far away was the video from the crash site (i.e. how long wo...

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by flybucky
Wed Feb 05, 2020 2:16 am
Forum: Civil Aviation
Topic: Kobe Bryant killed in a helicopter crash
Replies: 780
Views: 117166

Re: Kobe Bryant killed in a helicopter crash

Actually, I found an even better video of the fog. It was taken by another pair of mountain bikers who were on the broken tail side of the trail (not the first pair of mountain bikers who took the closeup photo of the fuselage fire that was published on TMZ and NY Post). The video is about 2/3 down ...

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by flybucky
Wed Feb 05, 2020 1:56 am
Forum: Civil Aviation
Topic: Kobe Bryant killed in a helicopter crash
Replies: 780
Views: 117166

Re: Kobe Bryant killed in a helicopter crash

There have been a lot of questions about the fog ceiling level at the crash area. The METAR from Van Nuys or Camarillo is not helpful since weather in the mountains can be totally different than in the flat valleys. A lot of the photos of the crash site were taken later, when the fog had lifted, so ...

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by flybucky
Wed Feb 05, 2020 12:27 am
Forum: Civil Aviation
Topic: Kobe Bryant killed in a helicopter crash
Replies: 780
Views: 117166

Re: Kobe Bryant killed in a helicopter crash

New updates: after the Island Express purchased the helicopter, they made some changes in 2016. The 2 aft-facing captains chairs were replaced by a divan (like a bench/couch?), increasing the passenger compartment capacity from 5 to 7. Then 1 more passenger could sit up front next to the pilot for a...

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by flybucky
Wed Feb 05, 2020 12:10 am
Forum: Civil Aviation
Topic: Kobe Bryant killed in a helicopter crash
Replies: 780
Views: 117166

Re: Kobe Bryant killed in a helicopter crash

I don't know if its mentioned somewhere in this thread, but Kobe held a private helicopter license. Good possibility he was in the left seat. Source? This is the first I've heard. I searched on google for "kobe helicopter license" with date before 12/31/2019 and didn't find anything about...

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by flybucky
Tue Feb 04, 2020 11:39 pm
Forum: Civil Aviation
Topic: Kobe Bryant killed in a helicopter crash
Replies: 780
Views: 117166

Re: Kobe Bryant killed in a helicopter crash

I seem to recall that Camarillo Airport was VFR at the time of the accident - can somebody verify? If the cloud tops were say 2500 feet or something like that, I don't see why he could not have climbed over the tops and flown to CMA if it was say scattered or maybe broken there. The area between Ca...

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by flybucky
Tue Feb 04, 2020 10:06 am
Forum: Civil Aviation
Topic: Kobe Bryant killed in a helicopter crash
Replies: 780
Views: 117166

Re: Kobe Bryant killed in a helicopter crash

Thanks for your analysis and time (as well as flybucky, Zeke, and everyone else here)! I have gotten burnt out working on it, so I am going to let it go as is. Here is my first ever YouTube video. This is my reconstruction of the crash. Really impressive work! It is better than I've seen from any o...

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by flybucky
Tue Feb 04, 2020 9:59 am
Forum: Civil Aviation
Topic: Kobe Bryant killed in a helicopter crash
Replies: 780
Views: 117166

Re: Kobe Bryant killed in a helicopter crash

Somewhere is a file with 2 data points per second, and it shows a controlled flight until the last second. Are you referring to the FR24 Granular Data ? IMO, it does not show controlled flight at the end (see graph) . Over -4000 fpm descent, overspeed 161 kts (max speed of S-76B is 155 kts). How lo...

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by flybucky
Tue Feb 04, 2020 9:45 am
Forum: Civil Aviation
Topic: Kobe Bryant killed in a helicopter crash
Replies: 780
Views: 117166

Re: Kobe Bryant killed in a helicopter crash

Fine. SoCal approach lost contact. I haven't seen any evidence that there was radio communication beyond that. Do you have a source? Same goes for the ME ruling. The last radio communication was the pilot advising that he was climbing to avoid a cloud layer. (Source: NTSB media briefing https://www...

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by flybucky
Sun Feb 02, 2020 9:33 am
Forum: Civil Aviation
Topic: Kobe Bryant killed in a helicopter crash
Replies: 780
Views: 117166

Re: Kobe Bryant killed in a helicopter crash

The spiral pattern would then indicate disorientation and ignoring the compass heading ? My theory is spatial disorientation leading to loss of control. Not disorientation in the sense of not knowing the compass heading. The pilot could have known the compass heading was off, but he couldn't gain c...

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by flybucky
Sun Feb 02, 2020 8:52 am
Forum: Civil Aviation
Topic: Kobe Bryant killed in a helicopter crash
Replies: 780
Views: 117166

Re: Kobe Bryant killed in a helicopter crash

WIederling wrote:
What was the intended path? ( if that is know ) Follow the road any further ? or fly into the "glob" of housing right from the crash site?

The original intended path was to keep following 101 until they reached Camarillo Airport.

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by flybucky
Sat Feb 01, 2020 12:48 am
Forum: Civil Aviation
Topic: Kobe Bryant killed in a helicopter crash
Replies: 780
Views: 117166

Re: Kobe Bryant killed in a helicopter crash

I can't seem to make the flight path match the debris field unless I put in a tighter left turn at the end. Nice work! I think your path is realistic (a decreasing radius descending turn). That's what I was imagining too. Could you also post a zoomed out view of your path, starting from when it div...

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by flybucky
Fri Jan 31, 2020 6:50 pm
Forum: Civil Aviation
Topic: Kobe Bryant killed in a helicopter crash
Replies: 780
Views: 117166

Re: Kobe Bryant killed in a helicopter crash

Highlights from NY Times article: https://www.nytimes.com/2020/01/30/us/kobe-bryant-crash-flight-certification.html Witnesses said cloud were 300 ft AGL. (That matches with ADS-B adjusted altitude data showing the heli was flying as low as 300 ft AGL). None of the local charter companies are IFR cer...

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by flybucky
Fri Jan 31, 2020 10:57 am
Forum: Civil Aviation
Topic: Kobe Bryant killed in a helicopter crash
Replies: 780
Views: 117166

Re: Kobe Bryant killed in a helicopter crash

https://mode-s.org/decode/adsb/introduction.html

thanks for that link. I am absolutely shocked that ADS-B doesn't transmit the timestamp. That opens up the possibility of out of order data points then, because it's up to the receivers to add the timestamp.
-->

gloom wrote:

thanks for that link. I am absolutely shocked that ADS-B doesn't transmit the timestamp. That opens up the possibility of out of order data points then, because it's up to the receivers to add the timestamp.

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by flybucky
Fri Jan 31, 2020 9:54 am
Forum: Civil Aviation
Topic: Kobe Bryant killed in a helicopter crash
Replies: 780
Views: 117166

Re: Kobe Bryant killed in a helicopter crash

I have no idea how FR24 sorts the data .. and time stamps it .. though. I'm assuming that the ADS-B messages are timestamped when they are broadcast from the aircraft. That would be the best way to do it. Then it doesn't matter when any flight tracker receives the data, they just sort by the origin...

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by flybucky
Fri Jan 31, 2020 2:10 am
Forum: Civil Aviation
Topic: Kobe Bryant killed in a helicopter crash
Replies: 780
Views: 117166

Re: Kobe Bryant killed in a helicopter crash

It is a guess, but I base it on the fact when you look at the raw data in a spreadsheet format you can see some of those weird spikes coincide with "jumps" backwards on Lat/Long, which would be impossible. I think you're right. When you look at the raw numbers and see how much time passed...

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by flybucky
Fri Jan 31, 2020 2:05 am
Forum: Civil Aviation
Topic: Kobe Bryant killed in a helicopter crash
Replies: 780
Views: 117166

Re: Kobe Bryant killed in a helicopter crash

ADS-B is transmitting data sets twice a second from the aircraft. Hmm, how come these 2 data points are only 0.1s apart then? This is from the FR24 granular data csv . 17:45:22Z.214 17:45:22Z.314 Every 5 seconds my receiver sends data to FR24s servers, but it only sends the latest data set so there...

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by flybucky
Fri Jan 31, 2020 1:05 am
Forum: Civil Aviation
Topic: Kobe Bryant killed in a helicopter crash
Replies: 780
Views: 117166

Re: Kobe Bryant killed in a helicopter crash

There are comments on PPRUNE that FlightRadar24 data is not reliable in that sort of terrain? Everybody here seems to treat FR24 data like it's gospel but I wonder? I actually think those spikes are erroneous data, or out of order data. I think this is a good topic. I often see people mention that ...

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by flybucky
Thu Jan 30, 2020 9:54 pm
Forum: Civil Aviation
Topic: Kobe Bryant killed in a helicopter crash
Replies: 780
Views: 117166

Re: Kobe Bryant killed in a helicopter crash

How do you calculate that ceiling? Mean sea level or above ground. The latter is what ATC reports. Oh thanks, didn't know that. I had been assuming wrongly that the ceiling was specified MSL. Yeah, that makes a big difference. VNY ATC said 1100 ft ceiling. Elevation at VNY is 802 ft. So that means ...

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by flybucky
Thu Jan 30, 2020 7:53 pm
Forum: Civil Aviation
Topic: Kobe Bryant killed in a helicopter crash
Replies: 780
Views: 117166

Re: Kobe Bryant killed in a helicopter crash

Maybe not "spatial disorientation" . Could it have been a deliberate abort/u-turn to get below the cloud cover and go back the way he came? That's what some early theories were. But looking at more info, it doesn't make sense. The ceiling was only 1100 ft, barely above ground level. Why w...

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by flybucky
Thu Jan 30, 2020 7:47 pm
Forum: Civil Aviation
Topic: Kobe Bryant killed in a helicopter crash
Replies: 780
Views: 117166

Re: Kobe Bryant killed in a helicopter crash

Wow that audio is interesting (and sad) to listen to. What I find interesting is it appears to move very slowly overhead or even stationary, Then starts to move away(possibly quickly), then just crashes. Yes, it was almost overhead, but it was not stationary. The nest video starts at 9:45:01 am. At...

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by flybucky
Thu Jan 30, 2020 7:25 pm
Forum: Civil Aviation
Topic: Kobe Bryant killed in a helicopter crash
Replies: 780
Views: 117166

Re: Kobe Bryant killed in a helicopter crash

This from an experienced helo and powered lift pilot at PPW Thanks, this was great info. However, if I knew a IMC penetration was imminent or I had already punched in, I would've immediately started a max performance level attitude climb while simultaneously slowing to "bucket speed". If ...

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by flybucky
Thu Jan 30, 2020 7:04 pm
Forum: Civil Aviation
Topic: Kobe Bryant killed in a helicopter crash
Replies: 780
Views: 117166

Re: Kobe Bryant killed in a helicopter crash

Your numbers are out a bit, both BUR and VNY controllers gave 30.19 as the altimeter to 2EX over the radio, that is what they would have been using. Thanks, appreciate the extra calculations you did. I will just point out that BUR gave 30.19 around 17:16Z, but VNY gave 30.16 around 17:37Z on the ra...

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by flybucky
Thu Jan 30, 2020 1:33 am
Forum: Civil Aviation
Topic: Kobe Bryant killed in a helicopter crash
Replies: 780
Views: 117166

Re: Kobe Bryant killed in a helicopter crash

Basketball is a popular sport around the world, but a major sport only in the US. Most people around the world had never heard of Kobe Bryant before his death (and I'm sure the accident didn't make the news everywhere either). Let's look at some analytics instead of personal opinions with small and...

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by flybucky
Thu Jan 30, 2020 1:00 am
Forum: Civil Aviation
Topic: Kobe Bryant killed in a helicopter crash
Replies: 780
Views: 117166

Re: Kobe Bryant killed in a helicopter crash

This in my mind leaves no doubt it’s CFIT The crash site photo alone would suggest CFIT, but looking at the final 20s of ADS-B data most likely eliminates CFIT, since they had lost control of the aircraft. "CFIT is defined as an unintentional collision with terrain (the ground, a mountain, a b...

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by flybucky
Thu Jan 30, 2020 12:50 am
Forum: Civil Aviation
Topic: Kobe Bryant killed in a helicopter crash
Replies: 780
Views: 117166

Re: Kobe Bryant killed in a helicopter crash

Here is an updated granular FR24 graph, which has Adjusted Altitude now. The ADS-B Altitude is Pressure Altitude. The Van Nuys METAR at 9:51am PST was A3016. Using a Pressure Altitude calculator , that comes out to 220 ft that needs to be added to the Pressure Altitude. This makes more sense and mat...

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by flybucky
Wed Jan 29, 2020 9:13 pm
Forum: Civil Aviation
Topic: Kobe Bryant killed in a helicopter crash
Replies: 780
Views: 117166

Re: Kobe Bryant killed in a helicopter crash

aerosreenivas wrote:
My question is Could it have been avoided had one of the victims strongly objected to flying in the very bad weather?

I'm sure if Kobe objected, the pilot would have cancelled or aborted the flight. Kobe's the one hiring him to fly.

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by flybucky
Wed Jan 29, 2020 7:57 pm
Forum: Civil Aviation
Topic: Kobe Bryant killed in a helicopter crash
Replies: 780
Views: 117166

Re: Kobe Bryant killed in a helicopter crash

There was a question in the NTSB final briefing if the dive was recoverable if they didn't hit the hill/outcropping. Of course, the NTSB could not answer that since it is too early for them to declare any conclusions. I looked the highest ridge in front of the helicopter's path if it had cleared the...

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by flybucky
Wed Jan 29, 2020 7:45 pm
Forum: Civil Aviation
Topic: Kobe Bryant killed in a helicopter crash
Replies: 780
Views: 117166

Re: Kobe Bryant killed in a helicopter crash

This is the "hill" (outcropping) that the helicopter struck, that was referred to as 20-30 ft above the main impact site.

Image

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by flybucky
Wed Jan 29, 2020 7:33 pm
Forum: Civil Aviation
Topic: Kobe Bryant killed in a helicopter crash
Replies: 780
Views: 117166

Re: Kobe Bryant killed in a helicopter crash

Doesn't seem to jive with NTSB saying they were only 20-30 feet short of clearing the mountains, no? Another case where NTSB did not communicate the situation very well, IMO. Yeah, the NTSB misinterpreted the question from the reporter (possibly due to poor wording by the reporter). I'm pretty sure...

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by flybucky
Wed Jan 29, 2020 6:52 pm
Forum: Civil Aviation
Topic: Kobe Bryant killed in a helicopter crash
Replies: 780
Views: 117166

Re: Kobe Bryant killed in a helicopter crash

So a more complete statement from NTSB would be "the pilot indicated he was climbing but in fact was descending". It seems NTSB was being conservative with the truth. No, that would not be an accurate statement. The pilot did not indicate he was climbing when he was descending. I think th...

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by flybucky
Wed Jan 29, 2020 5:18 pm
Forum: Civil Aviation
Topic: Kobe Bryant killed in a helicopter crash
Replies: 780
Views: 117166

Re: Kobe Bryant killed in a helicopter crash

Excellent video. Making pretty clear it was not CFID. Still not sure why the copter fell out of the sky at 2100'. Loss of control/stall or mechanical failure? A likely scenario is it climbed into the clouds because it couldn't continue anymore due to the rising terrain and low ceiling. Then as the ...

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by flybucky
Wed Jan 29, 2020 5:14 pm
Forum: Civil Aviation
Topic: Kobe Bryant killed in a helicopter crash
Replies: 780
Views: 117166

Re: Kobe Bryant killed in a helicopter crash

* Pilot was trying to climb out of the cloud layer at the time. How can they know that? The data shows a strong descent shortly before the end, and they say they don't have CVR/FDR to fall back on. NTSB said the pilot told ATC he was climbing to avoid a cloud layer. When ATC asked what the pilot wa...

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by flybucky
Wed Jan 29, 2020 5:02 pm
Forum: Civil Aviation
Topic: Kobe Bryant killed in a helicopter crash
Replies: 780
Views: 117166

Re: Kobe Bryant killed in a helicopter crash

Based on the sound on these videos, the various witness accounts claiming the helicopter "hovered" or "flew slowly at 4-5 mph" can be dismissed. Clearly a flyover at speed and then crash. The "hovering" or "flew slowly" could be due to illusion from their per...

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by flybucky
Wed Jan 29, 2020 12:47 pm
Forum: Civil Aviation
Topic: Kobe Bryant killed in a helicopter crash
Replies: 780
Views: 117166

Re: Kobe Bryant killed in a helicopter crash

Here is the location that audio is recorded https://www.google.com/maps/place/4304+Oak+Glen+St,+Calabasas,+CA+91302/@34.1380432,-118.7022267,186m/data=!3m2!1e3!4b1!4m5!3m4!1s0x80e820c18d3a6bef:0x9ef9917ec88e4ed8!8m2!3d34.1380432!4d-118.7016795 That Nest audio location is very close: https://i.imgur...

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