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Citation VII crashed in Brazil

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Citation VII crashed in Brazil

Old 11th Nov 2015, 13:20
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Citation VII crashed in Brazil

November 10th, a Citation VII, with prefix PT-WQH, crashed in Brazil.

There were 4 souls onboard: two crew and two important executives from one of the biggest banks of Brazil (Bradesco). No survivors.

Preliminary news says that the plane was at FL360 when there was a sudden drop of altitude.

One photo of the crash site can be seen here: O Antagonista - Urgente: Executivos do Bradesco morrem em queda de jatinho
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Old 11th Nov 2015, 14:19
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ASN Accident Report page.

Fotos Exclusivas mostram local do acidente com Cesnna Citation 7
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Old 12th Nov 2015, 02:36
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Picures of crash crater

A/C buried in crater wall















Last radar: FL 360. No phone comm.
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Old 12th Nov 2015, 02:57
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Video showing important details

G1 - Avião do Bradesco está enterrado a 5 metros de profundidade, diz Cenipa - notícias em Goiás
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Old 12th Nov 2015, 03:44
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That was a very high energy accident! Probably close to Mach I.

Does the Citation VII experience Mach tuck under certain conditions?
Not an aircraft that I've flown so I don't know the 'Gotchas'.
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Old 12th Nov 2015, 04:11
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High energy impact

Hi, Machinbird

Long time since intense AF447 effort.

I was imagining a scenario of depressurization and a LOC during dive.

Plane was 4 POB in a leg of 1 1/2 hour and radar echoes were lost when at 360.

I have more data to post. Will do it right now.

Rgds,

Mac
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Old 12th Nov 2015, 04:16
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Some clues

Observe something like VS marked ground before crater



?
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Old 12th Nov 2015, 04:19
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Agricultural machine operator:

Note that the crater shown above is consistent with that said one farm machine operator: "He took a pop, I thought it was thunder When I saw it [the aircraft] flew in very low woods I thought he would land..but I went straight and saw the explosion. "
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Old 12th Nov 2015, 04:23
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Does the Citation VII experience Mach tuck under certain conditions?

We are discussing here the issue. We will touch this point.

My son, the one that made the RTW in 2012 sent me a report on an issue on this a/c.

Will send you.
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Old 12th Nov 2015, 04:25
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Observe something like VS marked ground before crater
Hello Mac,
I saw that.
Could be a ground scar from a wing also.
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Old 12th Nov 2015, 04:38
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Wing would be more deep?

I imagined VS tip first. Probability of wing tip, much higher!
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Old 12th Nov 2015, 04:55
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Cessna jets

http://www.iaopa.eu/mediaServlet/sto...10/pp20-24.pdf
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Old 12th Nov 2015, 14:23
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In 2008 a citation III, essentialy the same type, had an quite similar accident in Venezuela. Dived from cruise altitude in to the ground. ACCIDENTE DEL N385EM, ANACO, ANZOATEGUI, VENEZUELA
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Old 12th Nov 2015, 15:24
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@Silvio Pettirossi: Was there a probable cause established for this accident?

The following (unofficial) info is available @Contato Radar (Brazilian aviation forum) and other news sites:
- Aircraft was cleared by ATC from FL360 to FL410. Soon after it was seen descending 1000 ft and then disappeared from radar (secondary, primary?)
- No mayday or other Tx was heard
- 3 months ago, aircraft was in Wichita being refurbished/refitted (no details yet)
- Maintenance was supposedly top notch, performed either by TAM or at the factory. She had her own dedicated mechanic (the bank's other jet, a G200, has a different dedicated mechanic)
- No FDR, only CVR
- A 2002 AD addressed the possibility of runaway trim, but it's hard to think it hasn't been taken care of.

A weird accident by all accounts.
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Old 13th Nov 2015, 02:56
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CVR found

According to G1 - CVR found, the CVR was found, but it status is unknown. Perhaps some news will be released soon
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