In foggy days, how many meters is the visibility of the plane before taking off?

As of August 17, 2065438, the visibility standard of domestic airports in foggy days is more than 200 meters, and the visibility standard of airports using HUD technology can be reduced to 150 meters.

The first low visibility 150m safe takeoff.

20 17 17 Jinan meteorological bureau issued a foggy orange warning signal at 7: 04 am on February 29, and fog with visibility less than 500 meters and visibility less than 200 meters in some areas has appeared in most areas of urban areas and other counties. At 7: 46 am, Jinan Yao Qiang International Airport was shrouded in white fog. Just then, a Boeing 737-800 took off on the foggy runway. The flight number SC 1 18 1 from Jinan to Shenzhen became the only flight that took off from Jinan Airport at this time. This is also the first time in the history of civil aviation in China that commercial flights take off safely under the condition of 150m low visibility.

HUD's Chinese name is head-up display. HUD is like a transparent projector. When taking off, it will display the remaining runway length, aircraft speed and current altitude in front of the pilot. Using HUD can not only reduce the pilot's operating load, but also improve the accuracy and reduce the take-off visibility standard. Mr. Jia, an expert from the Flight Standards Department of the Civil Aviation Administration of China, said that most of the domestic airport take-off visibility standards are above 200 meters. For example, the normal take-off sight distance standard of Jinan Yao Qiang International Airport is 400 meters. After using HUD technology, the take-off visibility standard can be reduced to150m.

Extended materials:

When the plane can't take off:

First, the weather.

1, not up to the flight standard, can't take off on time. The simple word "weather reason" actually contains many situations: the weather conditions at the departure airport are not suitable for take-off; The weather conditions at the destination airport are not suitable for landing; The meteorological conditions of flight routes are not suitable for flying over and so on.

2. Weather conditions at the airport of origin (visibility, low-level clouds, thunderstorm area and strong crosswind), at the airport of destination (visibility, low-level clouds, thunderstorm area and strong crosswind) and on the flight route (high-level thunderstorm area):

Second, the unit status

Unit status (the technical level of the unit, analyzing and mastering the current weather and trends to make professional decisions), and aircraft status (on the premise that the aircraft meets the safety standards for meteorological conditions, due to the failure of some airborne equipment, the aircraft is not suitable for flying in this weather condition).

Third, traffic control.

In this case, the explanation of civil aviation is even less, because it is considered that this situation cannot be changed because of its own reasons. It's no use waiting for the notice honestly. Civil aircraft in the air, like cars on the ground, are restricted and influenced by many factors. In short, civil aircraft take off, land and fly in limited space, limited time and limited conditions.

Four. Subsequent state

The follow-up situation caused by bad weather refers to the damage of airport navigation facilities, icing and other unqualified runways, and serious water accumulation. It was caused by the failure to take off normally.

Five, mechanical failure

When the plane breaks down, it is not allowed to take off. Sometimes I am told that the plane should return or land nearby after taking off. Troubleshooting: Most hidden dangers will be dealt with in time during these routine inspections, and all problems that pose a threat to flight safety will be solved after the flight continues.

References:

China News Network-China passenger plane used this new technology during its first low visibility takeoff at150m.