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E' stato riferito che entrambi i motori abbiano preso fuoco ad un altitudine di 1000m. Alcuni testimoni oculari hanno riferito che l'aereo era in fiamme prima dello schianto, e ha impattato con il suolo con un angolo di 30-40 gradi. <ref name=bbc0914/> Tuttavia, le nuvole basse (a 240m) devono aver permesso di vedere l'aereo soltante per pochi secondi, di conseguenza questa testimonianza non è stata presa in considerazione dall'indagine sull'incidente.
Il rapporto finale ha dichiarato che "dopo la virata di base, sulla rotta di avvicinamento per l'atteraggio all'altezza di 600m con l'autopilota disinserito, l'aereomobile ha incominciato a salire fino a 1300m, ha rollato di 360° ed ha impattato con il terreno."<ref name="aaib.gov.uk"/>
== Storia dell'aereomobile ==
[[Image:Пермь. Место падения Боинг-737-500. Общий вид. Август 2011 года.JPG|Vista del sito dell'incidente e del memoriale.|thumb|300px|upright]]
L'[[Interstate Aviation Committee]] ha condotto l'inchiesta con l'aiuto dell'[[National Transportation Safety Board|NTSB]], dell'[[Federal Aviation Authority|FAA]] e della [[Boeing]].<ref>{{cita news|url=http://www.ntsb.gov/Pressrel/2008/080914.html|titolo=NTSB assists government of Russia in aviation accident|pubblicazione=US [[National Transportation Safety Board]]|lingua=en|data=14 settembre 2008 |urlmorto=si |urlarchivio=https://web.archive.org/web/20080916010257/http://ntsb.gov/Pressrel/2008/080914.html|dataarchivio=16 settembre 2008 }}</ref> Inoltre siccome l'aereo era registrato nelle [[Bermuda]] anche l'[[Air Accidents Investigation Branch|AAIB]] ha partecipato con 2 investigatori e alcuni membri in rappresentanza del dipartimento di aviazione civile delle Bermuda. <ref>{{cita news|url=http://www.aaib.gov.uk/cms_resources.cfm?file=/AAIB%20Press%20Release%20VP-BKO%20160908.pdf|titolo= AAIB participate in russian incident investigation|pubblicazione=[[Air Accidents Investigation Branch|AAIB]]|data=16 settembre 208|lingua=en|accesso=23 febbraio 2013}}</ref> Ha partecipato anche il [[Bureau d'Enquêtes et d'Analyses pour la sécurité de l'aviation civile|BEA]] in rappresentanza della [[Francia]], paese costrutturo dei motori.<ref name="DCA08RA097"> {{cita web|url=http://www.ntsb.gov/ntsb/GenPDF.asp?id=DCA08RA097&rpt=fa |titolo=Factual report, NTSB ID: DCA08RA097 |pubbicazione=US [[National Transportation Safety Board]]|lingua=en|urlarchivio=https://web.archive.org/web/20081205183758/http://www.ntsb.gov/ntsb/GenPDF.asp?id=DCA08RA097&rpt=fa |urlmorto=si|dataarchivio=5 December 2008 |formato=PDF }}</ref>
Entrambi i [[registratori di volo]] sono stati ritrovati e
Secondo i dati dei registratori di volo i motori non hanno preso fuoco e hanno continuato a funzionare fino all'impatto.
Russia's [[Air Accident Investigation Commission]] of the [[Interstate Aviation Committee]] led the investigation, with US assistance from the [[National Transportation Safety Board]], the [[Federal Aviation Authority]], and [[Boeing]].<ref>{{cite press release|url=http://www.ntsb.gov/Pressrel/2008/080914.html |title=NTSB assists government of Russia in aviation accident |publisher=US [[National Transportation Safety Board]] |date=14 September 2008 |deadurl=yes |archiveurl=https://web.archive.org/web/20080916010257/http://ntsb.gov/Pressrel/2008/080914.html |archivedate=16 September 2008 }}</ref> As the aircraft was registered in Bermuda, that government was represented by the UK's [[Air Accident Investigation Branch]], with two senior inspectors sent to participate under the Memorandum of Agreement. The AAIB team had representatives from the Bermudian [[Department of Civil Aviation (Bermuda)|Department of Civil Aviation]] as advisors.<ref>"[http://www.aaib.gov.uk/cms_resources.cfm?file=/AAIB%20Press%20Release%20VP-BKO%20160908.pdf AAIB PARTICIPATE IN RUSSIAN AVIATION ACCIDENT INVESTIGATION]." ([http://www.webcitation.org/6E8mHAnP0?url=http://www.aaib.gov.uk/cms_resources.cfm?file%3D/AAIB%20Press%20Release%20VP-BKO%20160908.pdf Archive]) [[Air Accidents Investigation Branch]]. 16 September 2008. Retrieved 2 February 2013.</ref> The engines were made in France, so that state was represented by the ''[[Bureau d'Enquêtes et d'Analyses pour la sécurité de l'Aviation Civile]]'' (BEA).<ref name="DCA08RA097">
{{cite web
|url=http://www.ntsb.gov/ntsb/GenPDF.asp?id=DCA08RA097&rpt=fa
|archive-url=https://web.archive.org/web/20081205183758/http://www.ntsb.gov/ntsb/GenPDF.asp?id=DCA08RA097&rpt=fa
|dead-url=yes
|archive-date=5 December 2008
|format=PDF
|title=Factual report, NTSB ID: DCA08RA097
|publisher=US [[National Transportation Safety Board]]
}}</ref>
Il report conclusivo ha individuato le seguenti cause per l'incidente:<ref>{{Cita web|url=http://www.aaib.gov.uk/cms_resources.cfm?file=/VP-BKO_Report_en.pdf|titolo= IAC – Final report B 737-505 VP-BKO |lingua=en|accesso=7 dicembre 2017|urlmorto=si|urlarchivio=http://webarchive.nationalarchives.gov.uk/20141104113013/http://www.aaib.gov.uk/cms_resources.cfm?file=/VP-BKO_Report_en.pdf}}</ref>
According to the data in flight recorders, the engines did not catch fire and continued working until the impact. The latest official reports are published in Russian on the Air Accident Investigation Commission website. An English translation of the final report is available at the United Kingdom [[Air Accidents Investigation Branch]] website; the AAIB states that it is not an official English translation.<ref name="aaib.gov.uk">"[http://www.aaib.gov.uk/sites/aaib/publications/foreign_reports.cfm Foreign Reports]." ([http://www.webcitation.org/6E8mdzljz?url=http://www.aaib.gov.uk/publications/foreign_reports.cfm Archive]) [[Air Accidents Investigation Branch]]. Retrieved 2 February 2013.</ref>
* La causa principale è stata la perdita di orientamento spaziale da parte dell'equipaggio, in particolare del Capitano che era ai comandi durante la fase d'atteraggio. L'aereo ha rollato a sinstra, capovolgendosi e entrando in una rapida discesa. La perdita dell'orientamento è occorsa di notte, menre volavano nelle nuvole, con l'autopilota spento. Un cattiva [[Cockipit resource management]] e un addestramento insufficiente all'utilizzi degli [[attitude indicator]] ha contribuito all'incidente. I piloti avevano in precedenza volato su [[Tupolev Tu-134]] e [[Antonov An-24]] con una diversa strumentazione con un comportamento differente dell'orizzonte artificiale.
The final investigation report stated the following reasons for the crash:<ref name="aaib.gov.uk"/><ref>{{cite web|url=http://www.mak.ru/russian/investigations/2008/boeing-737-500.html|title=Boeing-737|publisher=|accessdate=23 January 2017}}</ref><ref>"[http://www.mak.ru/russian/investigations/2008/boeing-737-500.html Боинг-737-500 VP-BKO 14.09.2008]." ''[[Interstate Aviation Committee]]''. Retrieved 19 February 2009.</ref><ref>[http://www.aaib.gov.uk/cms_resources.cfm?file=/VP-BKO_Report_en.pdf IAC – Final report B 737-505 VP-BKO (full text)]</ref>
* Inadeguate pratiche da parte di Aeroflot-Nord nella manutenzione e gestione dei [[Boeing 737]] .
* The immediate cause of the accident was the loss of spatial orientation by the crew and chiefly by the Captain who was piloting the aircraft during the landing phase. The plane banked left, overturned and went into a rapid descent. The loss of spatial orientation occurred in the night, while flying in the clouds, with autopilot and autothrottle switched off. Poor [[Cockpit resource management|CRM]] and insufficient training for using the Western type of [[attitude indicator]]s contributed to the accident. The pilots had previously flown [[Tupolev Tu-134]] and [[Antonov An-24]] with a different type of attitude indicator (where the bank angle is shown by the movements of an aircraft symbol, and the indicator's background does not turn left or right).
* L'aereo aveva volato a lungo con un problema alle throttle levers con un conseguente maggior lavoro da parte dei piloti che dovevano utilizzarle in modo indipendente.
*Inadequate practices by Aeroflot-Nord in managing and operating the Boeing 737 aircraft.
* Esami di laboratorio hanno trovato una non specificata quantità di alcool nei tessuti del capitano.
*The aircraft had been flown for a long time with a throttle problem. The pilots had a higher workload because they had to operate the throttle levers for the left and right engines independently.
*Forensic examination found an unspecified amount of alcohol in the captain's tissue.<ref>{{cite web|url=http://www.avia.ru/news/?id=1233561507|title=AVIA RU Network: Новости|publisher=|accessdate=23 January 2017}}</ref> He also did not have adequate rest before the flight.{{Citation needed|date = September 2016}}
== Controversie legali ==
On 1 October 2008, the mother of a 27-year-old female passenger who died in the accident sued [[Aeroflot]] and Moskva Insurance Company for 7.7 million rubles (approximately US$300,000) in [[punitive damages]].<ref>{{cite news |url=http://www.kommersant.ru/doc.aspx?docsid=1034392 |title=[Former Moscow Youth Palace deputy director has her sentence reduced]|date=2 October 2008|publisher=[[Kommersant]]|accessdate=2 October 2008|language=Russian}}</ref>
== ATC communications before the crash ==
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