The Tibetan Plateau was considered a no-go area for many years, partly because of the limited performance of aircraft at that time, and partly because of the complex and changeable weather conditions in this airspace.

The civil airlines flying the plateau route are all in a dual-captain configuration, which is rare in other domestic routes. The combat capability on the plateau has always been one of the key combat capabilities of our army, and taking the air force units as an example, there has been a large increase in the training activities stationed on the plateau in the past two years.

According to reliable sources, after the reform of the armed forces in the future, all mobile combat units must have the capability of all-region combat and all branches of the armed forces. In the past, the troops were divided into first-line, second-line, and third-line units according to A, B, and C, and were divided into full-training units and half-trained units according to their training intensity, and field units and garrison units according to their combat tasks.

Now these complicated classifications and grading have been blurred, and in the future, there will only be two kinds of troops, border and coastal defense units and mobile combat units, and there will be no distinction between A, B, C, first, second, and third lines, and full-time and half-trained.

Every unit must have the ability to pull in any area to carry out combat missions.

The Air Force is certainly no exception.

Li Zhan's experience in plateau flying is too rich, he almost always flew on the plateau when he was in the old army, and later worked in Beiku, and flew many plateau reconnaissance and training missions. So he's pretty sure.

However, people are not as good as the sky, the previous weather forecast shows that the meteorological conditions in the plateau region are good, there are more clouds in the middle and high altitudes but the activity is stable, and the meteorological station will not form cumulonimbus clouds according to the data. However, in just two or three hours, the weather in the plateau area was sharply worse.

Regional meteorological stations are not surprised by this, because they are often encountered, so they have a plan. The problem is that they don't have a plan for Black Ribbon 01 at this moment.

Who would have thought that the power system of the No. 01 Black Ribbon would get out of control?

Chen Ming reminded Li Zhan in a deep voice, "Cave, the meteorological conditions in the airspace ahead are deteriorating, and cumulonimbus clouds of more than 30 kilometers are forming, you will be subjected to violent turbulence, and there is a high probability that there will be thunderstorms in the clouds." You've got to think about it. ”

Li Zhan pondered that at this time, the airspeed of the aircraft was still maintaining supersonic speed, reaching 1,988 kilometers per hour. This airspeed is quite terrifying, more than twice the maximum airspeed of a commercial airline. At this airspeed, a slight pitch or side-stroke angle will create a huge overload, and the plane may fall apart.

Under normal circumstances, under such a large supersonic airspeed, pilots choose to fly level, and then reduce the airspeed to a subsonic state after pulling the distance closer, so that there is quite a lot of room for movement, and in the face of enemy aircraft, there is enough kinetic energy to completely control the fighter.

Li Zhan asked, "Do you have any suggestions for disposal?" ”

Chen Ming turned his head and glanced at Yi Xiaoyi's side, Yi Xiaoyi shook his head anxiously and ashamedly, Chen Ming replied, "No, it's over." ”

Hearing this, Li Zhan said decisively, "The only plan must be adopted, I calculated, the sea continues to fly forward for more than 300 kilometers, and I can return to the approach when the fuel is exhausted." ”

"Approach?" Chen Ming's heart sank.

Li Zhan nodded subconsciously, although they couldn't see it, he said, "Yes, I can only estimate this accuracy, I will keep flying forward and turn slowly at the same time, the turning radius is expected to reach one hundred and twenty kilometers, you can calculate it again and give me a more accurate data." ”

Everyone's eyes were on Bao Guanhua, and only Bao Guanhua had the determination to give this order at this time.

Bao Guanhua slowly stood up and said in a deep voice, "Li Zhan is not without confidence, it can be said that he doesn't have any emotions now, what he gives is the simple data he can calculate." As he said, as long as he returned to the airspace for the second test flight, everything was easy to say. ”

He picked up the microphone and spoke directly to Li Zhan, "Dong Qi, my request to you is to return to the second test flight airspace, be ready to abandon the plane and parachute at any time, and the ground will give you more accurate data as soon as possible." ”

"Dong Yu understands!"

The technicians immediately divided into two parts, one part continued to look for a solution, and the other part immediately calculated the most suitable flight distance based on the flight data of the No. 01 Black Ribbon, so that the aircraft could run out of fuel in the right place and make a forced landing on the runway.

Yi Xiaoyi was personally in charge of the second part, and he had basically determined that he would not be able to find a solution in a short time, and now the only hope was the "almost impossible" forced landing plan proposed by Li Zhan. This scheme has done a lot, they are all science cows, what speed change speed, the triangle relationship between the resistance slip rate and distance, etc., etc., etc., are very awesome.

It didn't take a few minutes for Yi Xiaoyi to get the first calculation result, and after he quickly studied the map, he immediately reported to Bao Guanhua: "Factory director! Third-rate airports are more suitable! I suggest requisitioning their runways right away! ”

Bao Guanhua just glanced at Yi Xiaoyi and immediately picked up the phone and called directly to the military region's air force duty room, and after quickly reporting the situation and request, the military region's air force duty room directly contacted the third-rate airport.

The leader on duty said in a serious tone: "You immediately stop all inbound and outbound activities, empty all runways and prepare for emergency rescue!" ”

Before the third-rate airport could reply, the leader on duty hung up the phone and made another call, "Civil Aviation Regional Control Center?" The duty room of the Air Force of our military district! I order you to divert all aircraft in the controlled airspace and complete the airspace clearance within ten minutes! ”

also hung up the phone without waiting for a reply.

The civil aviation side is crazy.

First of all, in terms of third-rate airports, the airport control center immediately stopped all the flights taking off, pulled all back to the parking stands, and immediately urgently stopped the flights that were entering the port and those that were preparing to enter the port at the five sides, and asked them to immediately divert all to the alternate airports hundreds of kilometers away in three directions except the west.

A large passenger plane that has entered the landing procedure is an international flight of a foreign airline, most of which are foreigners. The crew hesitated after receiving instructions from the tower, and the captain hurriedly changed to the go-around procedure after the tower gave another stern order.

The large passenger plane, whose landing gear was only more than 100 meters above the ground, urgently pulled up and climbed, which made the more than 200 passengers in the cabin feel incomprehensible. The purser's explanation did not satisfy them, but it could not change the fact that they were diverted to an airport hundreds of kilometers away.

Passengers may be puzzled, the plane is not wrong, the landing procedure is not wrong, why do they have to pull up the go-around so much at the end of the door?

This is a matter of global execution, no matter what your situation, unless there is an emergency, as long as you have not landed, you must unconditionally leave the designated airspace as quickly as possible. In such an emergency, the command and control personnel do not have time to consider the situation of each aircraft in detail, and the fastest and most effective way is to use one size fits all!

There is only one purpose - to complete the orders of the troops in the shortest possible time!

It must not be discounted, and your license will be revoked if something goes wrong!

On the display screen of the civil aviation control radar, dozens of civil airlines, small planes, and helicopters within the designated airspace are all turning to fly east, north, and south, choosing the shortest route to leave the controlled airspace at the fastest speed.

This kind of large-scale emergency mobilization is a great test of the ability of air traffic control personnel, or not to say that the relevant personnel of the unit have been almost lost in the beginning of the war, and these people can be directly brought in to serve as the air traffic control force of the air force. It is an effective addition to the troops, just like the crew of a shipping enterprise.

In the third-rate airport, all the flight schedule displays were red in an instant, and the arrivals, departures, delays, and scheduled takeoffs on time were all stopped. In the red message that filled the screen, the two words in the last column made the passengers lose their souls - to be determined.

Passengers who fly all year round know that once such a word appears, it usually means that delay insurance has come into play, if you have bought delay insurance.

All the announcements at the airport were broadcast: "Dear passengers, due to air traffic control, all flight activities in this venue have been suspended, and we apologize for the inconvenience caused!" ”

Some sensitive travelers suspect that there is another earthquake, but they don't feel it!

It didn't take long for all the ground service desks of each airline to be surrounded by water, and the waiting hall was in chaos at first.

At this time, an airfield control leader who had been transferred from the Air Force took decisive measures to solve the problem of chaos. He asked the announcer to urgently broadcast a new notice: "Dear passengers, due to the need to use the airspace of this field for Air Force training, all flight activities in this field are temporarily suspended, and the return to normal time is to be determined, we apologize for the inconvenience caused!" ”

"Oh, the troops are doing training, wait, wait, don't make noise." This is to persuade peers.

"The Air Force flight training is, I said it earlier, and if I don't make it clear, this airport is really good!" It's a complaint that the airport doesn't work.

"Hurry up with a hammer, Anyiha!" It's reprimanding.

After a while, the young ladies of the airline ground service who fell into the sea of the people could finally breathe a sigh of relief and breathe much more smoothly.

The order of the waiting hall quickly returned to calm, everyone was waiting patiently, some called their wives and said that my wife I met the Air Force for training, what, I can't see the Air Force plane, stupid mother-in-law, that we ordinary people can see it, do you understand the confidentiality, don't ask blindly, wait, it doesn't matter if it's too late today.

Others went up to the edge of the runway, stretched their necks to look out into the field, and looked into the sky, trying to see a new fighter plane that made people's blood boil. It is a fact that must be admitted that since the first flight of the fourth-generation aircraft, the pride of the people has become stronger, and they have the confidence to walk with the wind when they walk hard.

The terminals, which had 10,000 or 20,000 people, all of a sudden, returned to their usual state.

Li Zhan didn't know that in order to ensure that he would not be disturbed by any possible unnatural factors in the air, the ground part had made a big move. At the same time, in order to increase the success rate of forced landings, all runways of third-rate airfields were temporarily requisitioned.

There is only one runway at Chengloma Airport, and there are no other options. The third-rate airport has two runways, so there is more space and more leeway. Even sliding onto a taxiway or even a parallel road is better than rushing out of the outfield. The third-rate airport also has an advantage - after Li Zhan turns around, he has to pass through the third-rate airport before returning to the field, which means that the third-rate airport is closer, although it is only a dozen kilometers.

Li Zhan plunged headlong into the cumulonimbus cloud in the plateau and mountainous area with a width of more than 100 kilometers in a supersonic attitude. At the bottom is a plateau with an average altitude of more than 4,000 meters, and the highest peak is close to 6,000 meters, which means that Li Zhan is only two or three thousand meters above sea level after entering the mountain.

Such an altitude is a lot of room for maneuver for a normal aircraft, but it is a nightmare for an aircraft with a malfunctioning power system and maintaining a fast speed of 1,988 kilometers per hour.

Visibility was instantly reduced, and Li Zhan had to turn on the radar to scan the front hemisphere, in order to know the situation ahead in advance and avoid it in advance. In the event of a plane failure, he cannot put all his trust on the altimeter, and must make accurate judgments based on data from all sides.

Soon after entering the mountain, Li Zhan clearly felt the strong tiredness of the turbulence, the air flow was very chaotic, and the shaking of the plane's supersonic flight was more intense than below the speed of sound, and even if it encountered a strong crosswind, the attitude of the entire aircraft would be destroyed, causing more serious consequences.

Li Zhan broke the joystick with his right hand in a steady and small way, and at the same time carefully pushed the rudder, exerting his force very carefully. He had to make a turn while the aircraft's attitude was relatively stable, so the maneuvering range had to be kept to a very small amount.

This is why he needs to fly an extra hundred kilometers to complete the U-turn. In addition, he had to take into account the fuel situation, so he had to make a balance between the two factors, and this balance had to be very precise, otherwise there would be a fuel run out but he could not fly to the airport or he would fly over the head without running out of fuel, and both would be forced landings to fail.

The efforts on the ground are still continuing, and Yi Xiaoyi's suggestion to temporarily requisition a third-rate airport has another layer of intention - Li Zhan has one more airport that is not far away and can choose to make a forced landing.

Chen Ming drew inferences from one case and immediately contacted all the airfields within a radius of 50 kilometers, the places of the Air Force, and anyone who could take off and land fighters. In the end, the temporary requisition was quickly completed through the duty room of the Air Force of the Military Region.

At this time, Chen Ming was a little relieved, and he called Li Zhan, "Dongyu!" We have temporarily requisitioned all the airports within 50 kilometers of this field, and the airports within a radius of 50 kilometers are open for you! You can choose any airport for a crash landing depending on the situation! Remember, you have to go back to the second test flight airspace to confirm the situation before making a forced landing! ”

Li Zhan understood Chen Ming's intentions.

Because of the advanced real-time monitoring equipment, many test flight data will be transmitted back to the ground in real time, and now it is no longer necessary to rely on the pilot to record the data with his brain and return it to his own technical personnel. Therefore, there is no need for test pilots to risk themselves in order to keep the aircraft and keep the test flight data.

First, return to the airspace of the second test flight to confirm that in the event of other failures, Li Zhan must abandon the plane and parachute. It's all farmland, and there is no damage to people on the ground. This is the best of the last option.

The problem is that reality is often harsh.

After learning that there were more forced landing airports to choose from, Li Zhan himself was also a little relieved, he had already memorized the terrain in the area and knew the location of those airports very well. Of course, a third-rate airport is the best choice in every way.

However, he didn't seem to have a chance to fly out of the large mass of highland cumulonimbus so smoothly.