Un CRJ precipita in finale in Kazakistan

[Maxx]

http://avherald.com/h?article=45ce98f4&opt=0

[alessandro.capotondi]

Le costruzioni, all'interno del luogo dell'impatto mostrato nelle foto, sono del VOR/DME?

[sigmet]

Se non sbaglio l'aereo era dotato di head up display quindi poteva fare cat 3A manualmente.
L'uso dell HGS su questo aereo non e' particolarmente "friendly" e questo potrebbe aver avuto un ruolo importante in un incidente che per molti versi sembra dovuto al fattore umano.
L'unica cosa certa e' che da quelle parti il rateo di incidenti e' ormai veramente preoccupante.

[JT8D]

Da AvHerald:

"Kazakhstan's Ministry of Transport and Communication reported the aircraft involved was UP-CJ006 (MSN: 7413), which had accumulated 25,707 flight hours in 22,975 flight cycles since new, the aircraft had joined Scat Airlines' fleet in September 2012 and had received its last certificate of airworthiness on Sep 20th 2012. An investigation commission has been formed to investigate the causes of the crash.

On Jan 30th 2013 the Ministry added, that the blackboxes have been sent to Moscow for readout by the Russian Interstate Aviation Committee (MAK)."
(http://avherald.com/h?article=45ce98f4&opt=0)

Paolo

[JT8D]

Aggiornamento di oggi:

"On Jan 31st 2013 the lead investigator said in an interview, that the actual horizontal visibility was at 300 meters and vertical at 30 meters, requiring a CatIIIb capability, the crew was thus not permitted to land in these conditions, however was permitted to descend down to decision height (30 meters for this particular CRJ-200). The weather service of the airport reported even worse conditions with a RVR of 200 meters and vertical visibility of 20 meters, which would require CatIIIc capability to land. The aircraft had planned for two alternate aerodromes, Karagranda and Astana, and carried sufficient fuel to reach either alternate after a go-around."
(http://avherald.com/h?article=45ce98f4&opt=0)

Paolo

[JT8D]

Oggi è stato pubblicato da AvHerald un aggiornamento su questo evento: "On Jan 29th 2014 Kazakhstan's Ministry of Transport reported first interim results of the investigation stating, the aircraft carried sufficient fuel to abort the approach and divert to the alternate aerodrome and both engines as well as all aircraft systems were working efficiently. The investigation also determined there was no icing or other external influence. The investigation is continuing, the necessity to establish why the crew did not complete all actions necessary for the missed approach renders the investigation highly complex".

(http://www.avherald.com/h?article=45ce98f4&opt=0)

Paolo

[JT8D]

E' stato rilasciato il Final Report relativo a questo evento.

"The crash of the CRJ-200 occurred after the crew initiated a missed approach in instrument meteorologic conditions, that became necessary due to lack of visual references visible on the ground (vertical visibility in fog did not exceed 40 meters), the missed approach became necessary due to actual weather conditions being below minima required for the approach. During the missed approach the elevator was deflected to lower the nose instead of rising the nose resulting in a steep dive and impact with ground. The investigation was unable to determine the cause of the elevator movement to pitch down. The investigation did not find evidence of any system malfunction or evidence of external influences like icing, windshear or wake turbulence while the aircraft attempted the go-around.

The most likely scenario to cause the reversed pitch commands was:

- a partial incapacitation of the pilot flying (captain)
- insufficient cockpit resource management resulting in the first officer diverting attention to radio communication instead of following the principle aviate, navigate, communicate, which resulted in the lack of monitoring of flight parametes
- lack of response to EGPWS alerts
- somatogravic illusion causing perceiption of a pitch up
- increased emotional stress by crew associated with the failed expectation of improving weather conditions at the time of approach
- failure to comply with requirements to medically assess flight crew, which led to the captain being assigned to the flight without needed rehabilitation and assessment following a surgery"

http://avherald.com/h?article=45ce98f4/0000&opt=0

Paolo

[sigmet]

Apparentemente l'incidente e' molto simile a quello del 737 a Kazan. Qualche dubbio però sull'attendibilità della ricostruzione.