71 die in plane crash near Moscow

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71 die in plane crash near Moscow

#1

Postby avi-addict » Sun Feb 11, 2018 7:27 pm

Saratov A148 at Moscow lost height after departure

A Saratov Airlines Antonov AN-148-100, registration RA-61704 performing flight 6W-703 from Moscow Domodedovo to Orsk (Russia) with 65 passengers and 6 crew, was climbing out of Moscow's runway 14R when the aircraft reached a maximum altitude of 6000 feet then descended again and disappeared from radar at about 14:28L (11:28Z). The aircraft was subsequently found crashed in an open field about 18nm southeast of the aerodrome near the village Stepanovskoye in Dergayevo in the Ramensky District, no survivors were found, about 50 bodies were recovered. The wreckage was distributed over a distance of about 1000m, no fire occurred.

Russian News Agencies Lenta and Interfax reports the remains of a second aircraft, a helicopter, were found near the crash site, the two aircraft collided in midair. Interfax later dropped the reports of a helicopter being involved, Lenta still reports the second aircraft.

Russia's Ministry of Emergency Situations confirmed flight 6W-703 crashed and was found near the village of Stepanovskoye in Ramensky district. Rescue forces including helicopters have been dispatched on site. The Ministry reported no other aircraft was found near the crash site. In the evening the Ministry reported one of the black boxes has been found and was recovered.

Russia's Post Office reported there was a bag of about 20kg mail on board of the AN-148. The bag may have triggered the agency reports of a midair collision with a post office helicopter, however Russia's Post Office does not operate helicopters in the Moscow region.

Russia's Interregional Transport Prosecution Office opened a criminal investigation into the crash verifying compliance with legislation, in particular technical maintenance and dispatch of the aircraft.

The Interstate Aviation Committee (MAK) reported the Saratov Airlines AN-148 registration RA-61074 from Moscow Domodedovo to Orsk departed Domodedovo Airport at 14:21L. Communication with the aircraft was lost at 14:28L, the radar target disappeared about the same time. The aircraft was found in the village Argunovo in Ramensky district. An accident investigation commission has been dispatched on site, an investigation was opened.

According to ATC recordings communication with the aircraft was normal until 11:28Z, when the crew no longer responded to calls from ATC and other stations.

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Re: 71 die in plane crash near Moscow

#2

Postby Bell 407 » Sun Feb 11, 2018 9:48 pm

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Re: 71 die in plane crash near Moscow

#3

Postby Raffles » Mon Feb 12, 2018 12:50 am

Eish! The wreckage does suggest a mid-air breakup, but it would really have had to be a major catastrophic failure.

:rip2:

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Re: 71 die in plane crash near Moscow

#4

Postby great dane » Mon Feb 12, 2018 6:52 pm

Raffles wrote:Eish! The wreckage does suggest a mid-air breakup, but it would really have had to be a major catastrophic failure.

Or something went boom :um:

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Re: 71 die in plane crash near Moscow

#5

Postby Raffles » Wed Feb 14, 2018 9:12 pm

According to the FDR they didn't turn on the pitot heaters and got erroneous airspeed readouts.

A typical chain of events scenario....

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Re: 71 die in plane crash near Moscow

#6

Postby avi-addict » Thu Feb 15, 2018 9:19 pm

Pilot error???

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Re: 71 die in plane crash near Moscow

#7

Postby Raffles » Fri Feb 16, 2018 10:37 am

avi-addict wrote:Pilot error???


I would say so.

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Re: 71 die in plane crash near Moscow

#8

Postby Raffles » Sat Feb 17, 2018 9:20 am

In the afternoon of Feb 13th 2018 the MAK reported, that decoding of the FDR data has been completed. Preliminary analysis shows, that the pitot heatings for all three pitot probes were off while the pitot heatings had been turned on prior to departure on the previous 15 flights. About 2:30 minutes after becoming airborne a special situation developed at about 1300 meters of height and a speed of 465-470 kph (250 KIAS) when a disagreement between the speed readings #1 and #3 developed with the speed reading #2 not registering, #1 was showing about 30kph (15 knots) more than #3, an according message was issued. No significant altitude deviations between the pitot systems were noticed. At about 2000 meters height speed reading #1 began to reduce while #3 increased, another speed disagree message was issued. The crew disconnected the autopilot and continued in manual control. Speed readings from #3 reached 540-560 kph (290-300 KIAS), #1 speed readings continued to decrease. 50 seconds after the autopilot was disconnected the aircraft experienced vertical loads between 0.5 and 1.5G, the #1 speed reading reached 0, the #3 began to decrease reaching 200 kph (108 KIAS), the aircraft pitched down to about 30-35 degrees below horizont, the vertical load was 0G. Before collision with the ground #3 speed readings began to rapidly increase reaching 800 kph (432 KIAS) just before impact, #1 speed readings remained at 0. The pitch angle remained at 30 degrees below horizont until impact, 5 seconds prior to impact a right bank of 25 degrees developed. The MAK wrote: "A preliminary analysis of the recorded information, as well as an analysis of similar cases that occurred in the past, suggest that the development of a special situation in the flight could be caused by incorrect data on the flight speed on the pilots indicators, which in turn was apparently due to icing of the pitot probes when the heating systems are off."

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