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Antonov 2 crash in Sweden with full Video

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Antonov 2 crash in Sweden with full Video

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Old 12th Jul 2023, 08:54
  #21 (permalink)  
 
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Originally Posted by denka
This seems to be the place in the video:
Correct. Appears to be an agricultural field and not a prepared airstrip. Length about 320-350 metres, probably soft surface, There is just a small gap in the trees at the end of the field to the left and right, probably were aiming for that when tarting the run, then could not correct yaw.
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Old 12th Jul 2023, 12:28
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Originally Posted by Miles Magister
I used th multi engine terms to illustrate what you have said. The basic information indicates that flight was attempted before there was sufficient airspeed for effective use of controls. The terms refer to multi engine aircraft but hew principles apply to al aircraft.
I don't believe there are defined speeds as such for single engine aircraft as they would have no application from a certification perspective. Minimum Controllable Airpseed is an acknowledged term applicable to singles but is not related to directional control. The AN-2 has very powerful flight controls capable of effective use at very low airpseeds. The aircraft has no defined stall speed.
For my two bits worth, once the pilot failed to counter the yaw caused by propellor effects early in the roll and got the thing pointed at the trees there just wasn't enough airspace available to bank and fly out the gap in the trees. .
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Old 12th Jul 2023, 13:01
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I initially though the aircraft had drifted left but the crash site appears to be at the stand of trees right next to the road. See the photo here - https://aviation-safety.net/database...?id=20230708-0

I can't decide if the takeoff started in the NW corner of the field or if it started at the West of the field close to the road. Starting close to the road would have required a takeoff path that curved right both on the ground and in the air. (See post 12 for view of the field.)

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Old 12th Jul 2023, 15:26
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Originally Posted by atakacs
No expertise here but is this the full extent of flaps on the AN-2 ?
no , max flaps is 45 .its been 30 years or so since i very briefly flew it .the Siberian version without electrics and the “ spring “ starter so we took off without flaps .no real need for them as the thing is already in the air at 55km/h . It feels a bit similar to a Piper cub , you lift off but has to wait a while to have more speed to climb. Very easy to fly .
i cannot remember any out of ordinary large torque compensation , definitively not like a Spit or on the US types i would say .

if , as reported, the pilot / owner and the airfield owner was in the left seat he would definitely know how to operate the thing out of there .
The height of the grass on the video is something that would worry me however . On an unprepared runway if you have a wingtip touching the grass during lift off you will definitely alter course and you cannot control it aerodynamically .
.
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Old 12th Jul 2023, 15:52
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Originally Posted by ATC Watcher
if , as reported, the pilot / owner and the airfield owner was in the left seat he would definitely know how to operate the thing out of there .
.
Is there any evidence that this aircraft had ever operated from that field before? Do we even know why it landed there? The aircraft appears to have been based at AG4850 which is a short paved strip with a reasonably clear takeoff path to the East.
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Old 12th Jul 2023, 20:51
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Originally Posted by ATC Watcher
if , as reported, the pilot / owner and the airfield owner was in the left seat he would definitely know how to operate the thing out of there .
.
He was not the owner of the field from which the accident take off was made.
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Old 13th Jul 2023, 08:19
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Originally Posted by EXDAC
I can't decide if the takeoff started in the NW corner of the field or if it started at the West of the field close to the road...
Looking again at the video, map and the ASN photo, it appears that the takeoff was along the dashed line, with the A/C coming to rest where marked by the white arrow. By the look if it they were aiming straight for the trees...


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Old 13th Jul 2023, 09:03
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Originally Posted by andrasz
Looking again at the video, map and the ASN photo, it appears that the takeoff was along the dashed line, with the A/C coming to rest where marked by the white arrow. By the look if it they were aiming straight for the trees...

Whereas going in a straight line down the field would have meant having to clear a much shorter line of trees, set further back from the field. I still don't understand what the pilot was doing in that field, and why they attempted the take off that they did.
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Old 13th Jul 2023, 11:01
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...according Facebook and "Antonov 2 Sweden" there was some kind of lorry or truck meeting there. That could explain the Antonov 2 visit.
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Old 13th Jul 2023, 23:01
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Originally Posted by Ohrly
Whereas going in a straight line down the field would have meant having to clear a much shorter line of trees, set further back from the field. ...
The video suggests the path taken was downhill for at least part of the run, whereas I suspect by the look of the satellite image it may not be quite the same for the run you propose?

FP.

Last edited by First_Principal; 13th Jul 2023 at 23:09. Reason: clarification
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Old 13th Jul 2023, 23:21
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Originally Posted by First_Principal
The video suggests the path taken was downhill for at least part of the run, whereas I suspect by the look of the satellite image it may not be for the run you propose?

FP.
If you move the GE pointer over the suggested takeoff path you will see that the elevation initially increases then slopes down to the trees by the road.

NW corner of the field 339 ft
High point 346 ft
Just short of trees 334 ft

I think the slope is exagerated in the video because of the long lens and the fact the the roadside vegetation intrudes into the field of view. There is not much doubt where the aircraft stopped and the starting point is reasonably well defined by the building in the background.

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Old 13th Jul 2023, 23:38
  #32 (permalink)  
 
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Yes, I was just looking at the elevation profile when you posted. As it happens although the path was a little shorter Ohrly's suggestion may have worked out better:

From Google Earth, approx path taken incl elevation & length (in meters, sorry!):



Path proposed:



FP.
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Old 17th Jul 2023, 11:02
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The old Antonovs are truly amazing machines but I guess they do have limits like every aircraft. When I lived in Sweden there was an AN 2 based on a very short private strip not far from me . However it always had short grass and had a good clear take off run even though the strip was about 400 m with a road at one end. The the approach aids consisted of some faded planks painted black and white to indicate end of the runway.
I visit the Czech republic often and the local airfield has a resident for the skydiving club and it can be heard rumbling along most weekends. Its the only time I have seen an aircraft flying backwards too on a very windy day as it tried to climb to jumping altitude.

Close up they are really big aircraft and astonishingly 'agricultural' too but like AK47s and T34 tanks they do the job they were designed for really well , Amazingly short take off and landing and capable of a decent load for a single engine. even if it was a biplane that was designed post WW2 . I am no expert but they must come close to being the perfect skydiving platform aside from climb rate. Great fun to watch in operation and especially starting with that monster prop shrouded in clouds of smoke and noise. Such a shame the guy in the vidoe broke his in what was probably just a momentary abherration

Last edited by Pilot DAR; 17th Jul 2023 at 17:42. Reason: typos
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Old 18th Jul 2023, 03:42
  #34 (permalink)  
 
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Friend was flying in Antarctica and came across an AN-2 and crew, was surprised to see a coal fired heater, with bags of coal, installed aft of the door with the chimney poking out the roof. Survival if forced down one assumes since neither spoke the others language.
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