Antonov An-2 crash at airshow
Discussion
KieronGSi said:
dr_gn said:
I assumed the turn (and smoke) was part of the display, but was too tight and caused a stall?
The AN-2 has a stall speed of about 35 mph, looms faster than that to me. Aircraft has a high rate of descent.
Pilot adds an excessive angle of bank, therefore increasing the rate of descent.
Adding back pressure does not arrest the descent. Possibly the added G causes a high speed stall.
Aircraft flies into ground.
I see a manoeuvre that is totally mishandled with tragic and entirely predictable results.
Edit: The idea that this was some heroic pilot turning away from the crowd is risible. It was a cock up of the first degree and entirely avoidable.
What the pilot shoud have done is: Unload. Roll wings level. Pull to the horizon.
Pilot adds an excessive angle of bank, therefore increasing the rate of descent.
Adding back pressure does not arrest the descent. Possibly the added G causes a high speed stall.
Aircraft flies into ground.
I see a manoeuvre that is totally mishandled with tragic and entirely predictable results.
Edit: The idea that this was some heroic pilot turning away from the crowd is risible. It was a cock up of the first degree and entirely avoidable.
What the pilot shoud have done is: Unload. Roll wings level. Pull to the horizon.
Edited by Ginetta G15 Girl on Tuesday 5th September 12:05
The manoeuver begins when the wing is still generating lift and the turning moment is being applied by use of ailerons, rudder and even elevator. Once the G-loads have been applied, the wing may THEN stall - but by then it's too late, especially if the Gs were induced in a desperate attempt to avoid smacking the ground.
It's hard to tell if that was a high speed stall from that angle- you can't judge how hard he was pulling. Even if it wasn't stalled, with that initial rate of descent as soon as he banked much above 60 degrees, there isn't much "upward" lift vector to arrest the rate of descent so the aircraft carried on down.
He over banked with a high rate of descent, too close to the ground- wether to not it stalled is pretty irrelevant.
It's possible that he realised that he'd left the turn too late and tried to turn inside the crowd line, but it was the subsequent over banking that caused the accident. He wasn't bravely steering a doomed craft away from innocents. If he'd used a moderate bank angle and a gentle pull he would have over-flown the crowd and got away with it.
He over banked with a high rate of descent, too close to the ground- wether to not it stalled is pretty irrelevant.
It's possible that he realised that he'd left the turn too late and tried to turn inside the crowd line, but it was the subsequent over banking that caused the accident. He wasn't bravely steering a doomed craft away from innocents. If he'd used a moderate bank angle and a gentle pull he would have over-flown the crowd and got away with it.
Interesting initial report out from the Russian investigators -
the An2 involved in the accident's airworthiness certificate expired 5 YEARS AGO.
It's not clear if the two pilots on board had a type certificate for the An 2
https://www.flightglobal.com/news/articles/authori...
the An2 involved in the accident's airworthiness certificate expired 5 YEARS AGO.
It's not clear if the two pilots on board had a type certificate for the An 2
https://www.flightglobal.com/news/articles/authori...
Eric Mc said:
Interesting initial report out from the Russian investigators -
the An2 involved in the accident's airworthiness certificate expired 5 YEARS AGO.
It's not clear if the two pilots on board had a type certificate for the An 2
https://www.flightglobal.com/news/articles/authori...
Wow the An2 involved in the accident's airworthiness certificate expired 5 YEARS AGO.
It's not clear if the two pilots on board had a type certificate for the An 2
https://www.flightglobal.com/news/articles/authori...
Pretty scary reading ....
'The authority is citing the accident as an example of operational violations in general aviation, adding that "bravado" which "borders on the criminal" is contributing to accidents.
It says a recent landing accident – involving a TR-301, which is based on the An-2 – followed an unauthorised flight in the Sverdlovsk region. The pilot, who refused medical assistance and screening for psychoactive substances, was in a "visible altered state of consciousness", adds the regulator.'
Even more alarming was the line about 17 GA accidents this year in which 8 of the aircraft didn't have airworthiness certificates .....
'The authority is citing the accident as an example of operational violations in general aviation, adding that "bravado" which "borders on the criminal" is contributing to accidents.
It says a recent landing accident – involving a TR-301, which is based on the An-2 – followed an unauthorised flight in the Sverdlovsk region. The pilot, who refused medical assistance and screening for psychoactive substances, was in a "visible altered state of consciousness", adds the regulator.'
Even more alarming was the line about 17 GA accidents this year in which 8 of the aircraft didn't have airworthiness certificates .....
VansDriver said:
It's hard to tell if that was a high speed stall from that angle- you can't judge how hard he was pulling. Even if it wasn't stalled, with that initial rate of descent as soon as he banked much above 60 degrees, there isn't much "upward" lift vector to arrest the rate of descent so the aircraft carried on down.
He over banked with a high rate of descent, too close to the ground- wether to not it stalled is pretty irrelevant.
It's possible that he realised that he'd left the turn too late and tried to turn inside the crowd line, but it was the subsequent over banking that caused the accident. He wasn't bravely steering a doomed craft away from innocents. If he'd used a moderate bank angle and a gentle pull he would have over-flown the crowd and got away with it.
I have not seen the video, but your description sounds very similar to what happened in the 1994 B52 air display crash, also ending in a massive bank angle, tight turn, no vertical lift component, and disaster. He over banked with a high rate of descent, too close to the ground- wether to not it stalled is pretty irrelevant.
It's possible that he realised that he'd left the turn too late and tried to turn inside the crowd line, but it was the subsequent over banking that caused the accident. He wasn't bravely steering a doomed craft away from innocents. If he'd used a moderate bank angle and a gentle pull he would have over-flown the crowd and got away with it.
Gassing Station | Boats, Planes & Trains | Top of Page | What's New | My Stuff