What caused this King Air crash? | FerrariChat

What caused this King Air crash?

Discussion in 'Aviation Chat' started by toggie, Jul 12, 2017.

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  1. toggie

    toggie F1 World Champ
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    Nov 30, 2003
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    I saw this video a few years ago and always wondered what caused this King Air to crash.
    It is on short final to a runway in Brazil.
    Seems like he's got the runway made with enough air speed to glide in.
    Then, at low altitude, the plane corkscrews itself into the ground.

    Was the pilot trying to do a go-around and gave it full power?
    Or was he adding partial power to make the field?

    The video illustrates how powerful the asymmetric thrust can be in a twin.

    Beech C90B King Air crash - Jundiaí Airport, Brasil

    The short write-up on the linked page says:

    April 20, 2012 - A Beechcraft C90B King Air (PP-WCA) crashed on final, about 300 metres short of the runway of Comandante Rolim Adolfo Amaro State Airport - SBJD, Jundiaí SP Brsail and caught fire.

    The aircraft was on a pre-deliver test flight after maintenance work and the pilot reported that he lost power and altitude shortly after takeoff and tried to return before he crashed near Escola Técnica Benedito Storani (a school for technical education), at Avenida Antônio Pincinato (street).

    .
     
  2. southnc

    southnc Formula 3

    Dec 25, 2013
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    Very strange - it looks like he is trying a right-base approach for final, right in front of the the runway. So, the approach was way too aggressive and he clearly over shot it. I did something like that in small trainer, during an engine-out test with my instructor. I literally dove towards the 180 runway, on a left base. But, at least I anged correctly and was aligned once I snapped out of the drive.

    Looks like the pilot tried to get the pane to slide right, to get back over the runway. Sure recipe for disaster. Should have done a go around.

    Regardless, as we all know turning back for the airport with engine trouble on take-off is almost always going to punch a hole in the ground. Especially with twins. IMHO, if you lose an engine on take-off find a spot within a 180 degree sweep in front of you. You may have to point the nose between two trees, but you'll likely survive.

    RIP.
     
  3. Go Mifune

    Go Mifune Karting

    Dec 12, 2003
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    #3 Go Mifune, Jul 12, 2017
    Last edited: Jul 12, 2017
    Classic Vmc Roll. As I recall there was one engine failed - I don't have the reference handy, but this video has been used in training to illustrate the tendency of pilots during a one-engine-inoperative scenario to allow the airplane to get too slow, then apply too much power on the remaining engine at a speed below which the flight controls can counter the engine's asymmetric thrust. The irony is that if you keep the airspeed proper while maneuvering for the runway and don't get the airplane too low or slow it will fly all day long on the remaining engine.

    Once the airplane was a s "out of shape" as this one was on short final you have given away most of your options. Psychologically it is very difficult to overcome the reaction of adding power to the remaining engine and pulling up to avoid the ground rushing up at you, but that is the exact recipe to create a Vmc roll. He would have been better off to descend at whatever angle he needed to to keep controllable speed and crash under some control.
     
  4. tazandjan

    tazandjan Three Time F1 World Champ
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    Jul 19, 2008
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    My father said the hardest thing to teach P-38 pilots was that if you lost an engine, you needed to pull back the power on the other one until you got her under control and trimmed up. First instinct was to increase the power on the good engine, and that often led to loss of control.

    Between the increased asymmetry from adding power on this one, and the increased lift caused by the increased prop wash over one wing, plus too tight a pattern requiring big corrections, this guy was screwed.
     
  5. jcurry

    jcurry Two Time F1 World Champ
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    Appears that there is a drop-off at the approach end, so he may have been too low and needed some power, which did not end well.
     
  6. teak360

    teak360 F1 World Champ

    Nov 3, 2003
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    I wonder if the pilot ever flew sailplanes, I doubt it.
     
  7. Hannibal308

    Hannibal308 F1 Veteran

    Jan 3, 2012
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    Everyone would be a better pilot if they did...my F-16 with a motor out was just a very big, very fast, and very heavy sailplane when it came to putting it down. Same with the BAe Hawk. Just about every little thing I had learned flying gliders at the zoo translated in nothing but helpful ways.

    Twins with only one screw turning are a different ball of wax though.
     
  8. jcurry

    jcurry Two Time F1 World Champ
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    Was is the 'best engine out speed' for max l/d in a F-16?
     
  9. Bob Parks

    Bob Parks F1 Veteran
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    Nov 29, 2003
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    Was he banking into the dead engine? It appeared that he had flattened out or started to flair and it stalled.
     
  10. Hannibal308

    Hannibal308 F1 Veteran

    Jan 3, 2012
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    200 KIAS + 5KTS for every 1000# of fuel or unjettisoned stores over 1000# (Ex 8000# of gas after takeoff = 235 KIAS) for a clean jet. After gear down, same math but 190 KIAS as the basic speed. High Key at 7-10,000 feet, Low Key 3-5000, Base 2000. Heavyweight is like a shuttle approach!
     
  11. Jason Crandall

    Jason Crandall F1 Veteran

    Mar 25, 2004
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