Breaking News: CO jet accident at DEN [20-Dec-2008]
Jul 17, 2009, 1:47 pm
#541
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If I'm reading that right, it insinuates that the pilots testimony of going hard over with the rudder to correct the deflection conflicts with the FDR data which shows the rudder staying neutral.
Jul 17, 2009, 2:16 pm
#542
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A simulator study, performed by the NTSB’s operations and human performance group however, revealed that removal of rudder inputs at 90kt in wind conditions similar to those experienced by Flight 1404’s resulted in similar excursions to the left side of the runway.
According to Boeing, the broken cable in that location could have caused the nose gear to rotate 7 degrees to the left. Seven degrees of wheel turn is also the maximum amount of nose wheel steering provided by full deflection of the aircraft’s rudder pedals, according to the NTSB.
Jul 27, 2009, 1:20 am
#543
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Sep 18, 2011, 9:09 pm
#544
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Has the final NTSB report on the accident been released?
Sep 18, 2011, 10:08 pm
#545
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Here's the full PDF link
And a link to the summary
TLDR: A large gust of wind pushed it off of the side of the runway.
And a link to the summary
TLDR: A large gust of wind pushed it off of the side of the runway.
Originally Posted by NTSB.gov
On December 20, 2008, about 1818 mountain standard time, Continental Airlines flight 1404, a Boeing 737-500, N18611, departed the left side of runway 34R during takeoff from Denver International Airport (DEN), Denver, Colorado. A postcrash fire ensued. The captain and 5 of the 110 passengers were seriously injured; the first officer, 2 cabin crewmembers, and 38 passengers received minor injuries; and 1 cabin crewmember and 67 passengers (3 of whom were lap-held children) were uninjured. The airplane was substantially damaged. The scheduled, domestic passenger flight, operated under the provisions of 14 Code of Federal Regulations Part 121, was departing DEN and was destined for George Bush Intercontinental Airport, Houston, Texas. At the time of the accident, visual meteorological conditions prevailed, with strong and gusty winds out of the west. The flight operated on an instrument flight rules flight plan.
The National Transportation Safety Board determines that the probable cause of this accident was the captain’s cessation of rudder input, which was needed to maintain directional control of the airplane, about 4 seconds before the excursion, when the airplane encountered a strong and gusty crosswind that exceeded the captain’s training and experience.
Contributing to the accident were the following factors: 1) an air traffic control system that did not require or facilitate the dissemination of key, available wind information to the air traffic controllers and pilots; and 2) inadequate crosswind training in the airline industry due to deficient simulator wind gust modeling.
The National Transportation Safety Board determines that the probable cause of this accident was the captain’s cessation of rudder input, which was needed to maintain directional control of the airplane, about 4 seconds before the excursion, when the airplane encountered a strong and gusty crosswind that exceeded the captain’s training and experience.
Contributing to the accident were the following factors: 1) an air traffic control system that did not require or facilitate the dissemination of key, available wind information to the air traffic controllers and pilots; and 2) inadequate crosswind training in the airline industry due to deficient simulator wind gust modeling.
Sep 18, 2011, 10:12 pm
#546
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And just FYI to anyone that is interested, you can find a list of all of the reports on the NTSB website. Here is a direct link to the aviation specific page.