National Transportation Safety Board Special Investigation Report: Safety Issues Related to Wake Vortex Encounters during Visual Approach to Landing.

摘要

Since December 1992, there have been five accidents and incidents in which an airplane on approach to landing encountered the wake vortex of a preceding Boeing 757 (B-757). Thirteen occupants died in two of the accidents. The encounters, which occurred during visual conditions, were severe enough to create an unrecoverable loss of control for a Cessna Citation, a Cessna 182, and an Israel Aircraft Industries Westwind. Additionally, there were significant, but recoverable losses of control for a McDonnell Douglas MD-88 and a B-737 (both required immediate and aggressive flight control deflections by their flightcrews). The Safety Board conducted a special investigation to examine in detail the circumstances surrounding the five recent accidents and incidents in which an airplane on approach to landing encountered the wake vortex of a preceding B-757. The purpose of the Safety Board's special investigation was to determine what improvements may be needed in existing procedures to reduce the likelihood of wake vortex encounters.