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Superjet in fatal Moscow crash had windshear warning on approach and bounced twice on landing
26 May 2019

SU-95

The Russian Ministry of Transport released initial findings on the May 5 accident of a Sukhoi Superjet at Moscow’s Sheremetyevo Airport in Russia.

Aeroflot flight 1492 took off from Sheremetyevo Airport’s runway 24C at 18:03 hours local time on a scheduled service to Murmansk, Russia. Visibility was fine but there were some Cumulonimbus clouds near the airfield at 6000 feet.
The flight crew engaged the autopilot as the aircraft climbed through a height of 700 ft (215 m). At 18:08, as the aircraft was climbing through an altitude of about 8900 ft (2700 m), a failure occurred in the electrical system. At this point, the aircraft was 30 km west-northwest of the airport in an area of thunderstorm activity.
The captain assumed manual control of the aircraft and the crew managed to establish radio contact using UHF. The flight was not able to contact the approach controller and subsequently selected the emergency transponder code 7600 (loss of radio communication).
About 18:17 the aircraft overshot the runway centreline after turning to runway heading. Altitude at that time was about 2400 feet. The aircraft continued the right-hand turn, completed a circle and proceeded on the final approach for runway 24L. Flaps were selected at 25°, which was the recommended setting for landing above maximum landing weight.
At 18:26 the flight crew selected the emergency transponder code 7700 (emergency).
When descending from 335 to 275 m (1100-900 ft) the windshear warning system sounded five times: “Go around. Windshear ahead”.
From a height of 80 m (260 ft) above ground level, the aircraft descended below the glide path and at a height of 55 m (180 ft) the TAWS warning sounded: “Glide Slope.” From that moment on the airspeed increased to 170 knots.
At 18:30 the aircraft overflew the runway threshold and touched down at a distance of 900 m past the threshold at a speed of 158 knots. Touchdown occurred at a g-force of at least 2.55g with a subsequent bounce to a height of about 2 m. After two seconds the aircraft landed again on the nose landing gear with a vertical load 5.85g, and bounced to a height of 6 m. The third landing of the aircraft occurred at a speed of 140 knots with a vertical overload of at least 5g. This caused a rupture of the wing structure and fuel lines. Flames erupted and engulfed the rear of the aircraft. The aircraft slid to a stop on the grass between runway 24L and two taxiways. An emergency evacuation was then carried out while flames quickly engulfed the rear fuselage.

 

 

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