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************************************************************
NTSB PRESS RELEASE ************************************************************ National
Transportation Safety Board Washington, DC 20594 FOR IMMEDIATE
RELEASE: July 13, 2010 SB-10-27 ************************************************************ LACK OF RULES
REQUIRING DISSEMINATION OF WIND CONDITION DATA AND PILOT'S
INSUFFICIENT RUDDER CONTROL CITED AS PROBABLE CAUSE OF 2008 DENVER
RUNWAY ACCIDENT ************************************************************ Washington, DC -
The National Transportation Safety Board today determined
that the probable cause of the 2008 Continental
Airlines flight 1404 runway excursion accident was the captain's
cessation of rudder input, which was needed to
maintain directional control of the airplane, about 4 seconds
before the aircraft departed the runway, when the airplane
encountered a strong and gusty crosswind that exceeded the
captain's training and experience. Contributing to
the accident was the air traffic control system that did
not require or facilitate the dissemination of key available
wind information to air traffic controllers and pilots, and
inadequate cross wind training in the airline industry
due to deficient simulator wind gust modeling. On December 20,
2008, Continental Airlines flight 1404 veered off the
left side of runway 34R during a takeoff from Denver
International Airport. As a result, the captain initiated a
rejected takeoff and the airplane came to rest between runways
34R and 34L. There was a post-crash fire. All 110
passengers and 5 crewmembers evacuated the airplane immediately after
it came to rest. The captain and five passengers were seriously
injured. At the time of
the accident, mountain wave and downsloping wind conditions
existed in the Denver area and the strong localized winds
associated with these conditions resulted in pulses of strong
wind gusts at the surface that posed a threat to
operations at Denver International Airport. "This
aircraft happened to be in the direct path of a perfect storm of
circumstances that resulted in an unexpected
excursion in an airport with one of the most sophisticated
wind sensing systems in the country," said NTSB Chairman
Deborah A.P. Hersman. "It is critical that pilots receive
training to operate aircraft when high wind conditions and
significant gusts are present, and that sufficient
airport-specific wind information be provided to ATC controllers
and pilots as well." As a result of
this accident the NTSB issued 14 recommendations
to the Federal Aviation Administration regarding
mountain waves, wind dissemination to flightcrews, runway
selection, pilot training for crosswind takeoffs, and
crashworthiness. A synopsis of the
Board's report, including the probable cause,
conclusions, and recommendations, is available on the NTSB's website,
at http://ntsb.gov/Publictn/2010/AAR1004.htm. The Board's full
report will be available on the website in several weeks. ### NTSB Media
Contact: Terry N. Williams (202) 314-6100 ************************************************************ This message is
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