On the 10th of April 2010, a Tupolev Tu-154M aircraft of Polish Air Force crashed while attempting to land at Smolensk North Airfield, Russia
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The military jet crashed and was destroyed while attempting to land in dense fog
and poor visibility. The crew requested permission to carry out a trial approach to
a decision height of 100 m and told the controller to expect a go-around. A few
seconds before impact, the autopilot and autothrottle were disconnected in order
to execute a go-around. The airplane impacted upsloping terrain at a distance of
about 1,100 meters from the runway and 40 m to the left of extended centerline.
The immediate cause of the accident was the failure of the crew to make a timely
decision to proceed to an alternate airport although they were not once timely
informed of the actual weather conditions at Smolensk, which were significantly
lower than the established airport minima. Descent without visual contact with
ground references to an altitude much lower than minimum descent altitude for
a go-around, in order to establish visual flight. No reaction to the numerous TAWS
warnings which led to controlled flight into terrain, aircraft destruction and death
of the crew and passengers. Polish president Lech Kaczynski and his wife were
among the 96 people killed.

KEY
KVS: Captain
2P: Co-pilot/First Officer
B/I: Flight engineer
D: Air traffic control
A: Unknown/unrecognisable speaker
TAWS: Terrain awareness and warning system


10:37:01,4:
044: Arek, the visibility is now 200.
KVS: Flaps.
A: (incomprehensible)
KVS: Thank you.

10:39:50,2:
Signal at F=845 Hz. Outer marker.

10:40:04,7:
TAWS:TERRAIN AHEAD.
D: 4 and on course.

10:40:32,4:
TAWS:TERRAIN AHEAD.
ST: 200.
KVS: Turned on.
ST: 150.
D: 2 and on course, on glideslope.
TERRAIN AHEAD, TERRAIN AHEAD.
A: 100 metres.
ST: 100.
TAWS:PULL UP, PULL UP.
TAWS:PULL UP, PULL UP.
TAWS:TERRAIN AHEAD, TERRAIN AHEAD.
ST: 100.
(2P): In the norm.
ST: 90.
TAWS:PULL UP, PULL UP.
ST: 80.
2P: Go around.
Signal at F=400 Hz. (Decision height).
TAWS:PULL UP, PULL UP.
ST: 60.
ST: 50.
D: Horizon 101.
ST: 40.
TAWS:PULL UP, PULL UP.
ST: 30.
D: Height control, horizon.
ST: 20.
Signal at F=400 Hz. Autopilot disconnect.
Signal at F=800 Hz. Inner marker.
Signal at F=400 Hz. Autothrottle disconnect.
TAWS:PULL UP, PULL UP.
TAWS:Signal at F=400 Hz. ABSU.
TAWS:PULL UP, PULL UP.
TAWS:Sound of hitting trees.
2P: F*cking hell!
TAWS:PULL UP, PULL
D: Abort to second approach!
A: Screaming F*ckkkkkkkkkkkk.....
END OF TRANSMISSION

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