Return to 2000: Captain of the Great Powers

Chapter 147 Chasing the Wind!day by day! (Please subscribe!)

In the control room of the Qizhou tower, the supervisor on duty received a piece of news that made him feel extremely incomprehensible. The crew of 9451 actually planned to fly to the coastal waters of Qizhou first, hover over the coastal waters, and then make a decision.

"You should have received the sunrise time, why did you go to sea so much earlier?" The duty officer asked the crew by radio.

Qizhou Airport is next to the sea. It is a tidal flat area, which was flattened by the government to build the airport.There is a coastal dam between the airport and the beach, even if you drive, it takes only 10 minutes.And the area given by the Maritime Safety Administration is not far from the airport, so there is no need to rush there.

In fact, there is no big difference between waiting in circles over the airport and waiting on the sea itself.It's just that the nerves of the people involved in this matter are all tense, and they start to become suspicious at the slightest sign of trouble.

This time it was Xu Cang, not Shi Qi, who answered the supervisor on duty: "The N2 vibration value of our No. [-] engine has already exceeded five, and the engine will be shut down at any time. We must be prepared."

"Did the tip of the compressor blade touch the sealing material?" At this time, Shi Qi gradually understood.

Xu Cang hummed lightly: "N1 high vibration will feel obvious fuselage vibration, but N2 high vibration usually does not have this kind of feeling. Previously, because of the abnormal opening of the reverse thrust, we were attracted too much Energized."

If the engine thrust reverser is turned on abnormally in the air, it will usually be accompanied by large or small fuselage buffeting, which is very similar to the high vibration phenomenon of N1.This makes it easy for them to notice the vibration problem of the N1 rotor, but it is easy to ignore the situation that the vibration value of the N2 exceeds the standard.

When a person is under high pressure, his field of vision is prone to form a pipeline effect, and he cannot take into account other abnormal flight data.After all, when the reverse thrust is turned on and the thrust is always close to the limit, the vibration value of the engine will increase almost inevitably.

Previously, the vibration values ​​of the engine had been maintained close to the limit.But just now I was too busy discussing the feasibility of forced landing at sea, and I relaxed my focus a little bit, and the N2 vibration value directly exceeded the limit value.

"Still don't care?" Shi Qi looked at Xu Cang's side face, there was no hesitation on that young face, he still nodded firmly: "Don't care, we can't control it either!"

For the problem of high vibration value of the engine, Boeing and Airbus deal with the same procedure, that is, reduce the thrust of the aircraft when possible, until the vibration value drops below the standard or the thrust is reduced to idle thrust.

If the reverse thrust of the No. [-] engine is normal, that is, under the normal closed state, Xu Cang tried to reduce the thrust of the No. [-] engine to below [-] so that the aircraft can reduce the load, even if it has to withstand a certain amount of small descent rate. Accepted, after all, they had already climbed to nearly [-] feet before, and this altitude could be allowed to slowly consume.

However, under the premise that the reverse thrust of the No. [-] engine is turned on, Xu Cang must make the thrust of the No. [-] engine exceed [-], which is an intolerable bottom line.Once the thrust of the No. [-] engine is less than [-], the aircraft will have a descent rate of at least [-] feet without sacrificing speed. This is Xu Cang's most optimistic estimate.

Hearing that the only remaining No. 1 engine had also started to have problems, the supervisor on duty, Shi Lingling and Li Rongxian couldn't help but feel his heart tighten. You must know that once the N2 and N[-] of the aircraft have high vibration problems at the same time, it is very likely that they will be damaged. Can't hold back.And Li Rongxian knew that the No. [-] engine itself had the problem of abnormal opening of reverse thrust, which itself would aggravate the increase in vibration value, or the abnormal opening of reverse thrust was the key reason for the abnormal increase of vibration value of No. [-] engine.

"The sun won't come out in 15 minutes." Shi Lingling looked at Li Rongxian: "Can the engine last?"

Li Rongxian took a step back, a look of confusion flashed across his face: "I don't know either."

Yes, how could he know?No one can give an accurate answer.However, judging from his experience, it is estimated that the No. 10 engine will not last even [-] minutes.

An aero engine is an extremely precise assembly of parts, and a problem in a certain link can easily lead to a chain reaction, especially when the N2 rotor also begins to experience high vibration.

If the vibration value of the N2 rotor exceeds the standard, it means that there is a problem with the core part of the engine, and that is the most fatal.

Shi Lingling was silent for three or four seconds, and then said: "Director Li, is there a mobile phone that can make calls?"

"Are you talking about the walkie-talkie?" The supervisor on duty didn't think too much about it: "Yes, there are. Miss Shi, do you want it?"

Shi Lingling replied: "Well, help me tune to the tower frequency."

The supervisor on duty signaled his assistants to pick up the hand table, and said: "Miss Shi, you can use it, but it is an internal device of our department. Please return it later."

"I know." Shi Lingling didn't intend to take a walkie-talkie for himself.

Soon, the assistant of the supervisor on duty came over with a walkie-talkie, and handed it to Shi Lingling under the director's signal.

Shi Lingling took the walkie-talkie, and without saying a word, headed for the exit of the control room.The supervisor on duty guessed something, not surprised, just asked casually: "Where is Miss Shi going?"

"Coastal dam!" Shi Lingling left without looking back.

Li Rongxian was stunned for a moment, but quickly realized it.Without any hesitation, he quickly chased after her: "Miss Shi, wait for me."

At this moment, in the cockpit of the plane, Xu Cang was already manipulating the plane to the predetermined sea area.According to the results calculated by the flight computer, if the current speed is maintained, it will not even take more than 3 minutes to reach the predetermined area.

Looking at the N2 vibration value display on the engine data display that has reached seven, Shi Qi couldn't help but feel worried.The vibration value of the engine is increasing a bit fast, which is not a good sign.Although the vibration value of the No. [-] engine was relatively dangerous before, it can be maintained at around five for a long time, which is a critical standard.

But after the N2 vibration value broke through five, it took no more than five minutes to increase from six to seven. This speed really made Shi Qi feel uneasy.

"Don't you really care about it?" Although it has been decided to make an alternate landing, there is still a big difference whether there is power before the alternate landing, especially the forced landing at sea has almost strict requirements on the attitude of the aircraft entering the water.

Xu Cang also noticed the growth rate of the vibration value of N2. After thinking about it for a while, he decided to take a tentative countermeasure.

"After crossing the coastline, I will slowly reduce the thrust of the second engine. If the aircraft has a descent rate of less than 7, it is acceptable." Xu Cang did a little mental calculation. According to the current altitude, if the aircraft can maintain no more than [-] At a descent rate of [-] feet per minute, that can last less than [-] minutes in a small descent, which is enough to wait until sunrise.

Shi Qi also felt that it was necessary to deal with the problem of the No. [-] engine. If left alone, the No. [-] engine would not last long: "Okay!"

Both of them are experienced pilots and don't need too much communication.Almost less than half a minute later, the plane flew over the coastline.Xu Cang relaxed his right hand a little, and then held the side stick tightly.

"Then I'll start!"

After the words fell, Xu Cang began to receive the thrust of the No. 87 engine at an extremely slow speed.Start from the initial thrust of [-] and decrease all the way down.

From the beginning to the end, Shi Qi was paying attention to the vibration values ​​of N1 and N2 and the rise and fall rate tables.After the thrust of the No. 85 engine was reduced to less than [-], the plane could no longer maintain a level flight state, and because Xu Cang kept maintaining the attitude of the plane, the speed of the plane began to drop.

"The plane can't hold it anymore." Shi Qi frowned, feeling a little uneasy in his heart, because neither the vibration value of N1 nor N2 showed any signs of decreasing. However, the only good news is that it did not continue to deteriorate. trend.

Xu Cang did not reduce the attitude immediately to maintain the speed of the plane, but waited for a while, and when the speed decreased to approach the warning speed, he dared not let it go down any more, and began to soften the plane with very subtle ejector movements. decrease the pitch attitude of the aircraft.

During the extra operations on the aircraft, Xu Cang kept the thrust at [-], and he didn't lower it any further.After the pitch attitude of the aircraft decreases enough to stabilize the speed, the altitude of the aircraft cannot be maintained, and the rate of descent begins to gradually form.

Fortunately, it seems that the plane's sinking tendency is not strong, and the rate of descent is formed slowly. After about five seconds, the rate of descent can be maintained at [-] feet per minute.

"It looks just right." Shi Qi raised his eyebrows, the rate of descent did not exceed the limit, but the vibration value of the engine did not change at all.Just reducing the thrust from 87 to [-] seems to be far from enough.

Xu Cang's left finger kept tapping on the throttle lever, and it could be seen that he was still hesitating.Such a rate of decline naturally does not worry about the problem of support time, but it is always futile to not control the vibration value of the engine.

"I'll reduce it a little more." Xu Cang said.

Shi Qi couldn't help worrying: "Is the height easy to deal with?"

"It's a bit tricky, but it should still be manageable." Xu Cang said, "Try it!"

After finishing speaking, without waiting for Shi Qi's opinion, Xu Cang reduced the thrust of the No. 78 engine from 2 to 78.This range is much smaller than before, but the N[-] vibration value was suddenly adjusted to six after the thrust stabilized at [-].

Shi Qi, who has been paying attention to the relevant data, brightened his eyes: "It's useful, it's useful, it's reduced to six."

However, before Xu Cang could feel any joy in the future, the plane was like a runaway wild horse. The rate of descent increased from 1000 to [-] to [-] feet per minute within three to four seconds. The momentum doesn't seem to be stopping yet.

"Damn it!" Xu Cang's reaction was quick, and he immediately increased the thrust of the engine back to [-].

However, it doesn't mean that after the aircraft thrust is added back to [-] feet, the aircraft's descent rate will immediately return to [-] feet. The reaction of the aircraft itself has a certain delay.After maintaining a large descent rate of seven or eight seconds, he turned around slowly, and finally stabilized at [-] feet per minute.

The reason why Xu Cang didn't directly add the engine back to maintain the level flight state since 87 was mainly because he was worried that such a violent gas pedal would increase the burden on the No. [-] engine.

After the plane stabilized again, the vibration value of the number two engine jumped back to seven again.

Shi Qi's face was very ugly. If it wasn't for waiting for the moment of sunrise, why would they need to be so entangled in the operation of the second engine?The No. [-] engine has already been closed as a slow car.

"What should I do, keep it like this?"

Xu Cang didn't increase the thrust until the plane stabilized. Instead, he frowned and looked east again, as if there was no sign that the sun was about to rise.

"That's it." Xu Cang licked his chapped lips, and then called the purser.

Soon the purser came in, and as soon as she came in, Xu Cang cut to the chase: "Purser, within 10 minutes, let all passengers put on life jackets and prepare for ditching, is it okay?"

"Ditching?" The purser felt as if he had been hit hard, and for a moment he didn't know how to answer.

In the regular training of their flight attendants, they have done a lot of ditching drills, but the water ditching project is not done every year.This also shows that the industry's attitude towards ditching on water is not a subject that needs to be treated normally, at least compared to ditching on land.

The evacuation time of ditching is even more urgent.Because an airplane is not a ship, the airtightness is not as good as it looks on the outside because of the existence of the pressurized valve.

Xu Cang himself has never tried how long it takes for a plane to sink completely after falling into the water, but it was mentioned in the flight manual that if it is a water landing evacuation, the best time is [-] seconds, that is, within [-] seconds All occupants must be evacuated.

Not only because of the urgency of the evacuation time, but also the water activities after the evacuation are also issues that need to be considered urgently.Not everyone is good at water, especially when the sea is rough and rough, including the purser himself.

Even as a flight attendant, what she fears the most is water training.There is no way, she is a landlubber herself, and the number three she knows seems to be the same as herself.

Seeing the chief purser's hesitant to speak, Xu Cang yelled directly: "Get ready for ditching within 10 minutes. At [-] feet, the cockpit will notify you of the imminent ditching. At [-] feet, start anti-collision Posture, after the plane stops, you listen to our evacuation signal. If there is no response from the cockpit after half a minute, you can decide the evacuation method by yourself without asking for our permission. Remember, everyone evacuates within [-] seconds, understand? "

After Xu Cang finished speaking a series of instructions, Shi Qi was stunned.He knew that Xu Cang's flying skills were very good, but he didn't expect that in actual command, he was not like a co-pilot at all, but arranged everything in an orderly manner.

The purser hesitated for a moment, but quickly nodded heavily: "I see."

Xu Cang waved his hand: "Alright, let's go out and get ready."

When the purser left, Shi Qi whispered: "It can be seen that the purser is very nervous, you can speak softly."

Xu Cang looked at the gradually descending height and sighed: "Is she the only one who is nervous?"

At the same time, at the exit of the working area of ​​the airport, a car passed by, carrying Shi Lingling and Li Rongxian.Originally, Shi Lingling came to the Shandong Airlines base every day in the team's special vehicle for interviews.

But because today's interview time was too early, Shi Lingling didn't go with his team in order to get more sleep. Instead, he was half an hour late, and then drove another car over.

Fortunately, she drove a car alone on this trip, otherwise she might not be able to drive a big car like an interview car.

As soon as the car left the airport working area, besides the whistling wind, the sound of waves hitting the shore also echoed in my ears.The coastal dam not far away looks like a lying black dragon in the dark night, which is extremely oppressive.

When she was about to arrive at the coastal dam, Shi Lingling's cell phone rang again, and she checked the number, it was Di Qingquan's.Immediately, she freed one hand and turned the phone on speakerphone.

As soon as the phone was connected, Di Qingquan's anxious voice came from inside: "Little Ling, has the plane landed?"

Just after talking to Shi Lingling just now, Di Qingquan directly contacted the Air Safety Department and asked the Air Safety Department to take the initiative to understand the situation, and then the Air Safety Department contacted the Qizhou Tower, and the incident became clear all at once.

"No, there are still five or six minutes left." Shi Lingling's voice was calm, as if Shi Qi, who was about to face a forced landing at sea, was not her father.

"Little Ling, I still think the danger of a forced landing at sea is too great. I heard that he made an emergency landing off the coast of Qizhou, where the sun hasn't come out yet? How did the plane land when the water surface was undulating in an emergency landing?" Qingquan said anxiously: "It's good that the plane hasn't landed yet, you should hurry up and ask your dad to think about it."

"I can't think about it anymore." Shi Lingling said: "The only working engine they have left has a problem, and they are now probably approaching the sea area where they are expected to make a forced landing."

Di Qingquan was surprised: "How could this happen?"

"Uncle Quan, you told me that Xu Cang is very powerful." Shi Lingling suddenly asked: "If he is on the plane, will he be sure?"

This is a hypothetical question, but Di Qingquan quickly figured it out, he shouted: "Xu Cang is on the plane, is he controlling it?"

"That's right, he's on the plane, and he should be the one who made the forced landing." Shi Lingling's hand holding the steering wheel suddenly tightened: "Uncle Quan, you haven't said anything yet, are you sure?"

After waiting for about ten seconds, Di Qingquan sighed: "If there is no light reference, no one can make a forced landing at sea. The sea is too windy and the waves are too strong, and the fault tolerance rate is extremely low. Even if the angle of entry into the water is slightly different The plane crashed and people died. You just said that the other engine also had a problem, what's the problem, can they last until sunrise?"

Hearing that Xu Cang was also on board, Di Qingquan no longer fretted over the necessity of a forced landing at sea.In his opinion, if Xu Cang made the decision, it must be after careful consideration.The only thing to worry about now is how to get the plane down.

Shi Lingling seemed to be out of strength: "Uncle Quan, I don't know either."

Not only did she not know, even Xu Cang and Shi Qi on the cockpit knew.

About 2 minutes later, the car stopped on the coastal dam.Shi Lingling and Li Rongxian looked to the east. Today's weather is so good that they can even see the lights of the plane that is about to make an emergency landing.

Perhaps because of the last illusion in his heart, after standing still, Shi Lingling turned on the walkie-talkie and said to the inside: "Xu Cang, are you sure about the forced landing in a while?"

In the cockpit, when Shi Lingling's voice sounded, Xu Cang couldn't help frowning.In Shi Lingling's voice, there was an extremely strong sound of wind, which didn't seem to come from the Qizhou Tower.

"There is no pilot in the world who can say that he is sure about ditching!" Xu Cang replied lightly.

But Shi Lingling's tone suddenly turned cold: "Then let me ask you, do you have personal grudges in choosing to land at sea?"

From Shi Lingling's point of view, Xu Cang may have resented her because of the previous incident, so he deliberately chose the extremely dangerous landing method of forced landing at sea.He intentionally took revenge on her with Shi Qilai who was also on the plane.

Shi Lingling's ability to say such naive words shows that although she looks calm, she is actually panicked and has started to speak indiscriminately.

Shi Qi's face changed slightly, and he was about to scold his daughter.However, Xu Cang said first: "Shi Lingling, you really are a disgusting woman."

After finishing speaking, amidst Shi Lingling's hysterical roar, Xu Cang stopped replying, while Shi Qi next to him looked embarrassed and didn't know what to say.

"You don't need to say anything, our top priority is to survive." Xu Cang's eyes swept down, and the plane was less than [-] feet at the moment.If the light is sufficient and the visibility is good enough at this moment, you can almost see the general situation of the waves at this height.

However, the sun hadn't come out at this time, and the bottom was still unclear, which made Xu Cang extremely annoyed.After calculating the time, there are still four or five minutes before sunrise, but their altitude is not enough.

"Turn on all the lights." Xu Cang ordered.

Shi Qi turned on all the lights according to his words, and then asked: "Do you want me to do anything?"

"Except for the passenger announcement at [-] feet and [-] feet, there is no need for the rest, just watch it."

This was actually an impolite remark, but Shi Qi was not at all annoyed, on the contrary he thought it was normal.

"Fly forward and we'll turn south."

According to the current wind direction, Xu Cang decided to adjust the direction of the plane in the near future. They must be parallel to the swell and must not land against the wave. Once the direction is reversed, it will be a dead end.

At this time, the sky is northerly. If it is the same at low altitude for a while, then their landing direction is from north to south, that is, they land with the wind.This is different from the normal landing against the wind, because the only thing they have to care about is the direction of the waves, not whether the wind is with the wind or against the wind.

However, the north wind at this time does not mean that the low altitude is also the north wind, and it does not mean that the waves are also blowing south. You need to go down and play by ear.

When Xu Cang was calculating the sunrise time, no matter how he calculated it, it seemed that the time would be too late.So, Xu Cang thought for a while, and slightly increased the throttle, hoping to reduce the aircraft's descent rate.

Xu Cang was very careful, he just increased the accelerator back to 82, the range was very small.But the engine was already at the end of its strength, and when Xu Cang moved the throttle lever, the N2 vibration value was directly increased to eight, and then the thrust of the No. [-] engine began to fluctuate greatly, becoming extremely unstable, and the exhaust temperature of the engine also began to increase Constantly rising, it seems that it is about to break through the limit.

The running sound of the No. [-] engine falling into Xu Cang's ears was like that of an old man on the verge of death, as if he had reached the end of his life.

"No, the engine can't hold it anymore!" Shi Qi's expression changed wildly.

Xu Cang originally planned to lower the throttle to more than 60 degrees to slightly suppress the overrun of the No. [-] engine.But he knew in his heart that the No. [-] engine was about to fail, and it was no longer possible to control it simply by tightening the accelerator slightly.

What to do? What to do? What to do?
Shi Qi looked around, but there was no sign of the sun coming out.And his experience is also extremely abundant, he knows that he and the people on the plane have reached the moment of life and death, but he is helpless.

The sun has not yet risen, and the surroundings are pitch black, how to make an emergency landing?Moreover, at this moment, the No. [-] engine was about to be scrapped, and they didn't even have a chance to return to land.

The middle way collapses!

At this time, Xu Cang finally showed his incomparable courage, and directly received the No. [-] engine to the slow car, and at the same time shouted: "Release the flaps, fully release! Turn on the ditching button!"

The water ditch button is an added function of Airbus aircraft compared to Boeing. It can close the valve on the aircraft to prolong the sinking time of the aircraft as much as possible.

However, this is only an extension, and it cannot completely prevent the plane from sinking.

Shi Qi exclaimed, "What are you going to do? You're making an emergency landing now, and the sun hasn't come out yet!"

"There is no choice. Our altitude is already very low, and the direction of the wind is almost the same down here, and the waves should be similar to what we expected." Xu Cang roared: "When our altitude is low enough, the landing lights may be at the last moment. Let me see what's going on in the water and I'll make the final corrections there."

"That time is too short, you don't have time to correct it."

However, Xu Cang had made up his mind, the No. [-] engine no longer gave him time to wait for the sun, and he wanted to accomplish an unprecedented feat in the dark night.

Of course Xu Cang knew that the landing light could only illuminate the water surface clearly when he was about to enter the water, and the correction time given to him was almost the blink of an eye, but Xu Cang wanted to seek life in an instant.

"I will let you survive." Xu Cang's whole body tensed up like a leopard about to attack: "Listen to me!"

Shi Qi took a deep look at Xu Cang, and gritted his teeth: "Okay!"

At this moment on the sea dam, Shi Lingling watched the bright spot in the sky falling sharply, like a falling comet. She looked at her watch, and her face became serious.

It's too early, obviously it's not sunrise yet, why did they start to descend so fast?
At this moment, a strong wind blew past, blowing Shi Lingling's long hair over his left shoulder.But after waiting for a while, the original north wind suddenly changed, and it turned directly to the south wind, and Shi Lingling's hair was blown directly to his right shoulder again.

But when the wind direction changed dramatically at low altitude, Xu Cang who was about to make an emergency landing in the sky didn't know anything about it!
PS——Can Xu Cang survive?

(End of this chapter)