The Being 777 accident. In my opinion this is a typical downwind accident where tailwind turns into headwind and provides a higher speed value and the pilot reduces power instead of increasing it in order to reach the runway. In a very late and violent go around at too low altitude the tail part hits the water and was torn off. The tail part has been found in the water before the runway. Looking at the photo of the accident, the wreck is missing its tail. A short film clip showed that smoke from the fire ran forwads. Then apparently tailwind had reached the ground. Maybe there were two captains in the cockpit. Then it is often a problem with CRM. Target threshold speed was 137 knots. According to preliminary information from the cockpit voice recorder, the crew did not state and anomalies or concerns during the approach. The throttles were at idle and the airspeed slowed below target approach speed during the approach. At 1600 feet the autopilot was disengaged. The aircaft descended through an altitude of 1400 ft at 170 kts and slowed down to 149 kts at 1000 feet. At 500 feet altitude, 34 seconds prior to impact, the speed dropped to 134 kts, which was just below the target threshold speed. The airspeed then dropped significantly, reaching 118 knots at 200 feet altitude. Eight seconds prior to impact, the throttles were moved forward. Airspeed according to the FDR, was 112 knots at an altitude of 125 knots. Seven seconds prior to impact, one of the crew members made a call to increase speed. The stick shaker sounded 4 seconds prior to impact. One second later the speed was 103 knots, the lowest recorded by the FDR. One of the crew members made a call for go a around at 1.5 seconds before impact. The throttles were advanced and the engines appeared to respond normally.
Posted on: Wed, 10 Jul 2013 07:46:12 +0000
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