Civil Aviation Administration responds to Juneyao Airlines' windshield cracks: it can fly to its destination normally

　　Zhongxin Finance, February 25th. On the 25th, the Civil Aviation Administration held a press conference. Regarding the cracking of the windshield glass of the Juneyao Airlines passenger plane on February 19, Zhu Tao, director of the Aviation Safety Office of the Civil Aviation Administration, said that the left side of the cockpit of Juneyao Airlines’ 320 aircraft was on the left side. The side fixed window is a single-layer crack in the middle-layer glass. According to the manual, it can fly to the destination normally. However, for the sake of safety, stability and reliability, the crew decided to alternate and land safely.

The 7-minute drop reported online to a height of more than 4,300 meters is the usual rate of descent for normal flights and is not dangerous.

　　According to reports, at present, the specific reasons are under in-depth investigation, and a definite conclusion will be announced as soon as possible.

　　Zhu Tao said that the windshield system of a transport aircraft usually includes two windshields on the front of the cockpit, a fixed window or sliding window on the left and right sides, and a windshield heating system.

The windshield and side windows of Boeing 737 and Airbus 320 are composed of three layers of glass, of which the outer layer does not bear structural force, and its main function is to prevent collision.

The middle and inner layers are the structural stress-bearing layers.

If any of the middle and inner layers remains intact, the aircraft can maintain a normal internal and external pressure difference to ensure flight safety.

During the operation of the aircraft, the windshield system is sometimes affected by the impact of other foreign objects such as birds or hail, arc discharge of the heating system and other factors, resulting in cracks in the glass, so windshield glass cracks have a certain probability of occurrence.

　　It is understood that from 2017 to 2021, a total of 254 windshield cracking incidents occurred in China's civil aviation, with an average of about 50 incidents per year.

When such a situation occurs, the flight crew will handle it in accordance with standard handling procedures and take the best measures to ensure flight safety.

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