PPRuNe Forums - View Single Post - Upper wing covered by snow during takeoff roll
Old 10th Apr 2012, 13:40
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up_down_n_out
 
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I thought this would create an almighty row as it went viral yesterday on the RU blogosphere and so it should!

Sorry for the length of this post now.

It may be the only thing that will save lives.



I am all in favour of naming and shaming the operator as:-

1/ The a/c in question is named after a world famous russian musician.

2/ It's only 4 years old.

3/ The operator in question was responsible for the disastrous

Aeroflot Flight 821 - Wikipedia, the free encyclopedia

crash in Perm which lives in INFAMY in this part of the world.

They had the GALL to disassociate their company the following day from A-N, knowing full well the cause of that crash was all of CRM, defective maintenance & alcohol.

There are many people still angry about this to this day....and now we see the same operator taking these sort of liberties yet again, as if they hadn't learnt a thing in 4 years?

5N SU821 crash facts (in English)‎ > ‎Aircraft state, crew qualification, physical and moral shape‎ > ‎
5N's pilot speaks about craft engines thrust stagger

posted May 3, 2009 11:56 AM by ivan ivanoff [ updated Jun 1, 2009 6:11 AM ]
Source: sever @ forumavia.ru 9/14/2008 [12:05:06pm] 9/14/2008 [12:10:04pm] - Fidelity: 90% -


I flew this craft to Perm on the day before yesterday, it was not too bad, only A/T ****** all that up terribly.
We switched it off when we could not take it anymore. It is perfectly stable at FL.


Discussion: Those remarks are issued by the one of 5N's pilots who flew this plane on the same itinerary two days before crash and made above video with his mobile phone




Here is a cockpit photo of the flying state of the a/c 2 days before the fateful crash





Two frames from the
taken in the cockpit of B737-500 VP-BKO(cn 25792/2353) two days before crash in Perm (on 9/12/2008). Throttle levers are put in unaligned positions to compensate engine thrust differences.

....

In the light of the current dispute between SU and Belavia...perhaps it's timely to get some serious SACKINGS & Dismissals going in the pipeline before yet another one hits the fan, as it's only a question of time.

I refer to:-

The Effect of Wing Leading Edge Contamination on the Stall Characteristics of Aircraft

In which EXACTLY the SAME conditions as seen in the PAX's video led to a serious crash on Belavia Flight 1834

"
The Russian Interstate Aviation Committee (MAK) released their final report in Russian[5] which concluded that the most probable cause of the accident was:
  • The asymmetric loss of aerodynamics properties of the wing during takeoff, which resulted in stalling the aircraft immediately after liftoff, the left wing contacting the runway and the subsequent destruction and fire.
  • The reason for the loss of aerodynamics properties of the wing in the current weather conditions was frost contaminating the surfaces of the wings. The cause of the frost contamination was, most likely, the temperature difference of air and cold fuel in the tanks.
  • Takeoff below the recommended safe speed for contaminated wings aggravated the situation.
  • The current standard procedures to examine the aerodynamic surfaces before departure, along with the inefficiency, can not fully guarantee the preventions of similar accidents during takeoff in the future because of the high sensitivity of the wing, that does not permit even a slight contamination of the leading edge.
  • Deicing of the wings as required by an Airworthiness Directive by Transport Canada (Canada's Civil Aviation Authority) in the actual weather conditions released after another similar accident most likely could have prevented the accident."
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