Russia: Plane crash caused by pilots' error on speed data

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(Russian Ministry for Emergency Situations photo via AP). In this photo provided by the Russian Emergency Situations Ministry, emergency personnel carry wreckage of an AN-148 plane crash in Stepanovskoye village, about 40 kilometers (25 miles) from the... (Russian Ministry for Emergency Situations photo via AP). In this photo provided by the Russian Emergency Situations Ministry, emergency personnel carry wreckage of an AN-148 plane crash in Stepanovskoye village, about 40 kilometers (25 miles) from the...
(Russian Ministry for Emergency Situations photo via AP). In this photo provided by the Russian Emergency Situations Ministry, emergency personnel carry wreckage of an AN-148 plane crash in Stepanovskoye village, about 40 kilometers (25 miles) from the... (Russian Ministry for Emergency Situations photo via AP). In this photo provided by the Russian Emergency Situations Ministry, emergency personnel carry wreckage of an AN-148 plane crash in Stepanovskoye village, about 40 kilometers (25 miles) from the...
(Russian Ministry for Emergency Situations photo via AP). In this photo provided by the Russian Emergency Situations Ministry, an emergency team works at the scene of a AN-148 plane crash in Stepanovskoye village, about 40 kilometers (25 miles) from th... (Russian Ministry for Emergency Situations photo via AP). In this photo provided by the Russian Emergency Situations Ministry, an emergency team works at the scene of a AN-148 plane crash in Stepanovskoye village, about 40 kilometers (25 miles) from th...
(Russian Ministry for Emergency Situations photo via AP). In this photo provided by the Russian Emergency Situations Ministry, emergency personnel prepare to pull out debris of an engine of the AN-148 plane crash in Stepanovskoye village, about 40 kilo... (Russian Ministry for Emergency Situations photo via AP). In this photo provided by the Russian Emergency Situations Ministry, emergency personnel prepare to pull out debris of an engine of the AN-148 plane crash in Stepanovskoye village, about 40 kilo...
(Russian Ministry for Emergency Situations photo via AP). In this photo provided by the Russian Emergency Situations Ministry, emergency personnel load debris of an engine of the AN-148 plane crash on a truck in Stepanovskoye village, about 40 kilomete... (Russian Ministry for Emergency Situations photo via AP). In this photo provided by the Russian Emergency Situations Ministry, emergency personnel load debris of an engine of the AN-148 plane crash on a truck in Stepanovskoye village, about 40 kilomete...

MOSCOW (AP) - Investigators say the crash of a Russian passenger plane that killed all 71 people on board may have been caused by the pilots' failure to activate heating for pressure measurement equipment, resulting in flawed speed data.

The Interstate Aviation Committee said Tuesday, after studying the plane's flight data recorder, that Sunday's crash occurred after the pilots saw varying data on the plane's two air speed indicators.

The flawed indication came because the pilots failed to turn on the heating unit for the plane's pressure measurement equipment prior to takeoff.

The pilots put the An-148 on autopilot after taking off from Moscow's Domodedovo Airport but took manual controls back when they saw clashing speed data.

The plane plummeted into a snowy field six minutes after takeoff, killing all 65 passengers and six crew.

Copyright 2018 The Associated Press. All rights reserved. This material may not be published, broadcast, rewritten or redistributed.

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