Sky bird - unpredictable danger for aviation

The event of Vietjet Air's flying Airbus bird and its head is a testament to the potential danger posed by birds.

Sky birds - the danger of aviation

According to the International Civil Aviation Organization, the birds crashing into airplanes were quite common with more than 1,535 reports of birds stuck in the aircraft engine compartment in 2013. This year, a machine Flight Airbus of Lufthansa, Germany, was forced to make an emergency landing in Lebanon after hitting the bird flock, causing the engine to spill fire.

Large flocks of birds such as Canadian geese create a great risk for aircraft.(Photo: Alamy).

According to Skybrary, bird collisions are a major threat to airline safety . The aircraft are easy to lose thrust after the bird is caught in the engine exhaust slot, resulting in fatal accidents. Accidents of this type can occur at all stages of flight, but the most common is the flight and landing stages of the aircraft due to the large number of birds at this altitude.

Today's ultra-durable jet engines can still be damaged by foreign objects, especially when crashed at high speeds. The birds do not make the engine die hard, but can cause the inner rotor to be bent or chipped, resulting in reduced power. In an accident with Lufthansa's Airbus A321 aircraft in Lebanon's sky, the bird crash caused an engine to lose capacity, forcing an aircraft carrying 144 passengers to make an emergency landing in Beirut.

The collision with large Canadian geese flocks made the US Airlines Airbus A320 an emergency landing on the Hudson River in New York, USA.(Photo: AP).

Captain Steven Draper, spokesman for the British Aviation Pilots Association, said most of the collisions with birds occurred at altitudes below 900m. From 3,000m or more, the number of birds is less.

According to pilot Patrick Smith, author of the book Cockpit Confidential, the larger the bird , the greater the risk of harm . An aircraft flying at 463km / h will be impacted by more than 22,680kg if hit by a medium-sized goose.

Large groups of birds such as Canadian geese create a greater risk of collisions. They often fly with dense density and the number of these species globally is rising sharply. Smith stressed the need to control the number of Canadian geese in some parts of the United States, and to build new airports far from where the geese migrate to reduce the risk of collisions.

Vietjet Air's Airbus A320 has a dented nose caused by birds.(Photo: Viet Anh).

In addition, bird repellent measures are also widely used around airports. Not only open speakers and fire flares to scare birds, many airports even use raptors to hunt birds that may be threatening to aircraft.

"Pilots need to make sure birds see clearly the oncoming aircraft by turning on the signal light and flying at the right speed so that the birds have a chance to avoid the road and reduce the damage caused by the collision , " Draper share.