S7 Airlines Flight 778
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S7 Airlines Flight 778
Summary
Date July 9, 2006
Type Landing accident
Site Irkutsk, Russia
Passengers 193[
1]
Crew 10[
1]
Injuries 68+[
2]
Fatalities 124+[
2]
Survivors 74+
Aircraft type Airbus A310-324
Operator S7 Airlines
Tail number
F-OGYP
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Passenger plane crashes in Russia
S7 Airlines Flight 778 (RU778 or SBI778) was an Airbus A310-300 passenger flight
en route from Moscow to Irkutsk when it crashed upon landing at Irkutsk International
Airport at 07:44 local time on July 9, 2006 (July 8, 22:44 UTC). The plane overshot the runway,
sliding over several hundred metres of wet runway and grass.
It crashed through a
concrete barricade, hit a group of private garages and burst into flames.
Television pictures showed smoking ruins of the Airbus with only the tail section intact.
Local firefighters from five different services required two hours to extinguish the blaze.
There were 193 passengers and 10 crew members aboard [
1]. Seventy six passengers and
three flight attendants survived the crash, leaving 124 dead.
Nearly 60 people
were taken to a hospital, some with critical injuries, but others managed to escape
with few injuries and 15 were able to continue their journeys. Some survivors said
they owed their lives to a flight attendant who managed to open the emergency
exit in the rear of the aircraft.
A spokeswoman for the ITAR-Tass news agency in Russia, Irina Andrianova said
"The aircraft veered off the runway on landing. It was travelling at a terrific speed."
The agency also reported that many children were among the passengers
who were flying to a holiday on Lake Baikal, near Irkutsk, about 4,200 km
(2,604 miles) east of Moscow. Besides Russian citizens, who were the majority of passengers,
there were also two Polish tourists travelling to Mongolia via Irkutsk.
Having been in the tail section, they managed to escape the plane unassisted,
one injuring a leg.[
3]. There were twelve other non-Russians on board, three from China,
three from Belarus and two each from Germany, Moldavia, and South Korea.
Among the dead were Sergey Koryakov, regional head of the FSB, and Mariya Rasputina,
daughter of writer Valentin Rasputin.[
4]
News agencies reported Russian Transport Minister Igor Levitin
as saying the pilots
advised air traffic controllers they had landed successfully, but that radio
contact then broke off suddenly. Speaking before flying from Moscow to Irkutsk,
Levitin was also quoted as saying the runway was wet after rain.
[
edit] Causes of the accident
According to the preliminary results of the investigation[
5], the accident
was caused by the left engine thrust reverser's failure to deploy (
disputed - see below section A). The thrust reverser in question was known
to malfunction prior to the accident. When the pilot attempted to
slow down the plane by deploying the right engine thrust reverser,
the left engine was inadvertently switched into takeoff mode, causing the
plane to accelerate (disputed - see below section A). It veered off the
runway and hit the concrete barricade at the speed in excess of 100 km/h (62 mph). [
6]
Witnesses report that the previous day an S7 A-310 aircraft was taken off the
route to Chelyabinsk due to technical failures, but it is unknown whether
this was the same aircraft.
Airbus said the aircraft involved in the accident had registered number F-OGYP
and MSN (Manufacturer Serial Number) 442. It was delivered new in June 1987
and had accumulated more than 52,000 flight hours in more than 10,000 flights.
It was powered by Pratt & Whitney PW4152 engines. [
1]
According to Airbus, the aircraft was properly maintained.
The most recent A Check, or maintenance check, on the aircraft was on June 1,
Sibir said. A C Check, which involves a more thorough overhaul, was carried
out July 12 in Frankfurt last year. [
7]
Revised accident Section A: According to the final results of the investigation,
the accident was not caused by the left engine thrust reverser's non-deployment
due to a Minimum Equipment List (MEL)authorized reverser deactivation - The thrust
reverser in question was inoperative in line with MEL requirements prior to the accident.
When the pilot slowed down the plane by using wheel braking and deploying
the righthand engine thrust reverser, the lefthand engine throttle lever was
inadvertently advanced, causing the plane to not de-accelerate as per a normal landing.
The crew was unaware the thrust lever had been inadvertently advanced until late in the
accident cycle. The aircraft veered off the runway and hit a concrete barricade
at the speed of approximately 100 km/h (62 mph).
A preliminary report was issued by the Russian MAK the week of September 25, 2006,
blaming the accident on pilot error, and finding that there was no problem with the
engines or the aircraft.
.
عبدالمحمود محمد عبدالرحمن
فيس بوك
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