Microburst and Wind-Shear Avoidance

At very clear nights, the inversion of temperature occurs near the surface, under the influence of gentle or very weak ground winds. As we know, the wind on the reverse may be relatively strong. As shown in the figure, when the aircraft rises or falls when the aircraft flips, the airspeed will fluctuate depending on the wind shear zone. As we know, the aircraft is most likely to land from takeoff when flipped, so the airspeed is very low and only a few speeds are greater than the stall speed. Variation in airspeed may cause unstable stall near the ground. Wind shear in the region between relatively gentle wind at inversion and strong wind at turning

In the 1980's, due to aircraft accidents caused by micro explosive wind shear like Delta Airlines Flight 191, the phenomenon known as micro explosion became an increasing concern. The micro explosive radar was developed for safety during landing and a warning of 2 to 5 minutes was issued to the aircraft near the micro explosion. Some airports now have a special surface called soft concrete at the end of the runway, which behaves like Styrofoam and when the material collapses the airplane stops relatively fast. These surfaces are useful when the runway is located next to a watershed or other dangerous area and prevents the aircraft from crossing the edge of the field.

At the Fort Lauderdale - Dallas / Fort Worth - Los Angeles route, the plane crashed due to wind shear due to a serious microburst. The local people were killed when the plane crossed the highway. The accident later became the subject of the television movie. Due to this accident, windshia training was done and many changes were made to the weather forecast and the wind shear test. It collided with mainland 747 and carried 418 passengers and crew. Both Delta (London - Cincinnati) and Continental (London - Newark) traveled to the United States and nearly 600 aircraft are operating. During flight, Delta Air Lines was 60 miles (97 km) south of the designated "C" channel and 30 feet (9.1 m) away from the designated "C" channel as L-1011 was flying in Canada's airspace "D" It was. We are flying orbit (five west boundaries from the United States to the UK and five East east tracks)

The most notable accident caused by wind shear and other weather disturbances was the crash of Delta Airlines No. 191 in 1985. Since 1995, the number of large commercial civil aircraft accidents caused by wind shear has decreased about every 10 years due to forced shipboard detection and addition of the Doppler weather radar facility (NEXRAD) to the ground. Establish a high resolution terminal Doppler weather radar station at many US airports that are normally affected by Wind shear and further assist pilots and ground controllers avoid the wind shear condition