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National Transportation Safety Board Washington, D.C. 20594 Safety Recommendation Document Series

By Hall, Jim

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Book Id: WPLBN0000707852
Format Type: PDF eBook
File Size: 135,450 KB.
Reproduction Date: 2006

Title: National Transportation Safety Board Washington, D.C. 20594 Safety Recommendation Document Series  
Author: Hall, Jim
Volume:
Language: English
Subject: Government publications, Transportation and society, National Transportation Safety Board (U.S.)
Collections: National Transportation Safety Board Collection
Historic
Publication Date:
Publisher: National Transportation Safety Board

Citation

APA MLA Chicago

Hall, J. (n.d.). National Transportation Safety Board Washington, D.C. 20594 Safety Recommendation Document Series. Retrieved from http://www.worldlibrary.in/


Description
Government Reference Publication

Excerpt
Excerpt: On February 21, 1997, at approximately 1400 Eastern Standard Time, a deHavilland DHC-8 (Dash 8), N923HA, operated by Piedmont Airlines as flight 3241, experienced a flight control malfunction while on approach to Pittsburgh International Airport in Pittsburgh, Pennsylvania. Just before touchdown, there was an uncommanded disconnect of the roll system. The captain was able to continue the approach and land the airplane safely. No injuries were reported, and the airplane was not damaged. Flight 3241 was being conducted under the provisions of Title 14 Code of Federal Regulations (CFR) Part 121 as a domestic, scheduled passenger service flight from Charlottesville, Virginia, to Pittsburgh. The Dash 8 is equipped with interconnected dual control wheels that provide roll axis control through the use of ailerons and flight spoilers. If either the ailerons or roll spoiler jam, the roll system can be manually disconnected through the use of the roll disconnect handle in the cockpit. The handle is connected by a spring-loaded cable and pulley system to a clutch wheels to be disconnected from one another. In this disconnected condition, the left side control wheel retains control of only the roll spoilers, and the right side control wheel controls only the ailerons. Under normal flight conditions, sufficient roll authority is retained so that pilots can exercise adequate roll control from either control wheel following a roll system disconnect. However, under abnormal circumstances, such as the loss of power from one engine, or high crosswinds during landing approach, the roll control available to one pilot may not be adequate.

 

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