Swedish CRJ-200 Cargo Crash Norway

[Pratt X 3]

CRJ-200 cargo aircraft declared emergency and then disappeared from RADAR.

http://avherald.com/h?article=4920a18a&opt=4096

[Chris M]

Good god... Nothing left of it at all.

[fish4life]

The pictures I saw sadly won't have a black box recoverable, or at least I'd be amazed if they could find anything.

[arctic_slim]

Holy crap there is nothing left of it. I hope the emergency call gives them some strong clues to what happened otherwise I don't think there is much left to inspect.

Let the speculation games begin.

[Meatservo]

Let the speculation games begin.

There isn't even enough left to speculate about.

[GyvAir]

I was wondering how they found it up there in the 66+ degree north winter dark of 3:00am.

Video:

http://www.nrk.no/nordland/norske-f-16- ... 1.12739279

Stating that they have found portions of data recorder(s):

http://www.nrk.no/nordland/kan-ha-funne ... 1.12741407

[rxl]

Holy crap there is nothing left of it. I hope the emergency call gives them some strong clues to what happened otherwise I don't think there is much left to inspect.

Let the speculation games begin.

No let's not. Speculation on the death in an instant of 2 of our colleagues is not a game. The cause of this tragedy needs to be found. Public speculation has nothing to add.
Deepest sympathy to the pilots and to their loved ones.

[bizjets101]

I'm certainly curious what was said during the MAYDAY call???

Only news is Flight Data Recorder has been recovered, it is badly damaged - but complete,
parts of the Cockpit Voice Recorder have been recovered but missing memory module.

[fish4life]

I am absolutely amazed they could find anything, let's hope they can get some data off it to hopefully get answers.

[Meddler]

Deep snow at a crash site like this can be a bit deceptive. There are probably more parts scattered around than you can see.

[CID]

Good god... Nothing left of it at all.

I thought the same thing about a similar accident on a Scat Airlines CRJ report on Avherald.

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

[arctic_slim]

Holy crap there is nothing left of it. I hope the emergency call gives them some strong clues to what happened otherwise I don't think there is much left to inspect.

Let the speculation games begin.

No let's not. Speculation on the death in an instant of 2 of our colleagues is not a game. The cause of this tragedy needs to be found. Public speculation has nothing to add.
Deepest sympathy to the pilots and to their loved ones.

Of course it's sad to lose colleagues, that's a given. But as we have seen in the past, lots of speculation happens after every accident. I look forward to the discussions on what might have happened.

Interesting to see the video of the crash site using IR, it stands out significantly from the surrounding snow.

[boeingboy]

Update:

On Jan 26th 2016 the SHK reported that the investigation managed to read out both cockpit voice and flight data recorder, the CVR does contain the talks of the crew during the accident flight. The investigation is currently analysing and validating the recordings. A preliminary report is estimated to be released in a week or two.

[golferguy19]

I think that's the first accident ever at that airline. Hope they find what caused such an insane descent rate.

[Finn47]

The Swedish accident board has published an interim status report in English here:

http://www.havkom.se/assets/reports/SRL-2016_01e.pdf

[digits_]

Low oil engine pressure on both engines ?

If you read the transcript (at the end) it gets really freaky. I have the impression they both knew exactly what was going on, and yet couldn't do anything about it.

[old_man]

Low oil engine pressure on both engines ?

I don't normally like partaking or speculating in such threads but -1G might do that in a standard turbine engine.

[Troubleshot]

looking at the FDR print out his "WHAT!" expression seems to have coincided with the pitch changing. Then the AP disconnects.

[fanspeed]

Low oil engine pressure on both engines ?

I don't normally like partaking or speculating in such threads but -1G might do that in a standard turbine engine.

Very likely because of the negative g.

[digits_]

Low oil engine pressure on both engines ?

I don't normally like partaking or speculating in such threads but -1G might do that in a standard turbine engine.

Very likely because of the negative g.

Would that also affect the engine operation or just the indication ?

[GyvAir]

Would that also affect the engine operation or just the indication ?

The negative g would cause the oil to migrate to the top of the oil reservoir area. The pickup or pump inlet will be situated near the bottom of the reservoir, so it would no longer be submerged in oil and would suck air in instead.

Indication system probably wouldn't be affected.

[pelmet]

Would that also affect the engine operation or just the indication ?

The negative g would cause the oil to migrate to the top of the oil reservoir area. The pickup or pump inlet will be situated near the bottom of the reservoir, so it would no longer be submerged in oil and would suck air in instead.

Indication system probably wouldn't be affected.

Apparently this is true. On a turboprop type I was current on several years back, another crew tried to go between two CB's while on descent into an American airport and got into some bad conditions involving negative g. They ended up shutting an engine down due to low oil pressure. No faults found after landing.

[arctic_slim]

The report gives nothing of a possible cause but we will have to wait until they do their investigation. I hope they can figure it out since they seem to have the FDR and CVR data.

Whatever happened seemed to be pretty sudden, I wonder if there was some sort of collision.

[pelmet]

Instrument malfunction led to West Atlantic CRJ200 freighter crash

Swedish air accident investigators have concluded that an instrument failure was the root cause of the crash of a Swedish cargo aircraft in January 2016.

The West Atlantic Sweden Bombardier CRJ 200, SE-DUX, crashed Jan. 8 while on a night flight from Oslo Gardermoen airport to Tromsø Langnes airport in the far north of Norway. The aircraft came down just over the border in Sweden.

Both pilots, the only people on board, died in the crash.

The investigators have called for the implementation – throughout the commercial air transport industry – of a system of initial standard calls for the handling of abnormal and emergency procedures.

The final accident report by Statens Haverikommission (SHK), the Swedish Accident Investigation Authority, says that flight was uneventful until the approach briefing for Tromsø, in level flight at FL 330.

The night was moonless, without clouds or turbulence. This lack of external visual references rendered the pilots totally dependent on their instruments, which included three independent attitude indicators.

According to information from the flight data recorder, a very fast increase in pitch was displayed on the left attitude indicator. The displayed pitch change meant that the pilot in command, who was the pilot flying, was subjected to a surprise effect and a degradation of spatial orientation.

“The autopilot was, most probably, disconnected automatically, a ‘cavalry charge’ aural warning and a single chime was heard, the latter most likely as a result of miscompare between the left and right pilots’ flying displays (PFD),” the report said.

Both elevators moved towards nose down and nose down stabilizer trim was gradually activated. The aircraft started to descend.

“About 13 seconds after the start of the event the crew were presented with two contradictory attitude indicators with red chevrons pointing in opposite directions. Bank angle warnings were heard and the maximum operating speed and Mach number were exceeded 17 seconds after the start of the event, which activated the overspeed warning,” the report said. “The speed continued to increase, a distress call was transmitted and the engine thrust was reduced to flight idle.”

The report continued: “the crew was active during the entire event. The dialogue between the pilots consisted mainly of different perceptions regarding turn directions. They also expressed the need to climb. At this stage, the pilots were probably subjected to spatial disorientation.”

“The aircraft collided with the ground one minute and twenty seconds after the initial height loss,” the report said.

SHK’s investigation found that the erroneous attitude indication on PFD 1 was caused by a malfunction of the Inertial Reference Unit.

The pilots initially became “communicatively isolated” from each other, says the SHK and a system for efficient communication was not in place.

Among its recommendations, “SHK considers that a general system of initial standard calls for the handling of abnormal and emergency procedures and also for unusual and unexpected situations should be incorporated in commercial aviation.”

“The accident was caused by insufficient operational prerequisites for the management of a failure in a redundant system,” the report concluded. “Contributing factors were: the absence of an effective system for communication in abnormal and emergency situations; the flight instrument system provided insufficient guidance about malfunctions that occurred; and the initial maneuver that resulted in negative G-loads probably affected the pilots' ability to manage the situation in a rational manner.”

http://atwonline.com/daily-news/instrum ... da380a1f62

[EPR]

Was there no "stand-by" EAI onboard to refer to?