Above the Jianchuan Airport tower, the assistant looked at the plane above the sky, which was floating in the air with an extremely strange upward posture, and was surrounded by endless fear.

As we all know, aircraft like 737 cannot hover in the air. The upward posture of the aircraft is obviously abnormal now, and even the assistant is not a professional flight professional, it can detect the seriousness of the problem.

In this posture, the plane will definitely stall, and then the lift on the wings will gradually lose, and the plane will fall straight down in a free landing posture.

"director!"

Assistant has been in the industry for many years, but he has never seen such a scene as an airplane. This picture is deeply engraved in the assistant's mind like a brand.

Just as Director Liu was almost completely disappointed, the plane that was almost hovering in the air suddenly moved. He deflected to the left with an incredible exaggerated slope.

"Move!?"

Director Liu's muscles trembled suddenly, and a little glow finally appeared in his eyes.

"There is still a way!"

At this moment in the cockpit, Xu Cang finally made his own response on the eve of the deep stall. He only had one chance, and as long as he was not sure, he would die without a burial place.

Xu Cang suddenly made a very steep turn with a slope of more than fifty degrees. Under this action, the plane's red and black speed belt immediately began to move downwards. However, the plane did not continue to rise, but the plane's speed was

It still switches back and forth at the top of the red and black speed belt, and the driving wheel is always in a state of shaking at all times.

Under the conditions of manual recovery of hydraulic loss, the difficulty of operating the aircraft's wheel is very, very high. Under the influence of the vibration logic of the wheel, Xu Cang could not even hold it.

However, Xu Cang still tried his best to hold the driving wheel tightly. He knew that as long as there were fewer mistakes, God would not give him another chance.

Beside Xu Cang, Tan Heling really didn't expect Xu Cang to make a big slope turn. This can indeed interrupt the problem of the plane's continued rise and the speed drop sharply. However, they can't keep turning like this.

"The altitude of the plane has not decreased and its speed cannot increase. What's wrong?" Tan Heling yelled.

In Tan Heling's view, Xu Cang's method of turning on the big slope is tantamount to drinking poison to quench thirst, and it cannot fundamentally change the predicament of the plane at this moment.

However, Xu Cang did not answer Tan Heling's question at all, and he had outlined all the steps in his mind. He did not need other people's suggestions, corrections, and doubts, just follow his ideas

Keep doing it.

"Pull out the landing gear handles!" Just as Tan Heling didn't understand Xu Cang's thoughts, Xu Cang had already begun to issue new instructions.

In his vision, there is already a possible way to land. However, before landing, he must clear obstacles for his landing as much as possible, including the problem of landing gear.

The reason why the plane went back to flight just now was that the left landing gear retracted after being grounded. Perhaps it was because of hydraulic reasons that the landing gear did not lower the lock, or the structural problem of the landing gear was simply, but now Xu Cang has no intention to investigate.

What is the reason? He just solved this problem as much as possible...

"Do you want to put the landing gear manually?" Tan Heling was stunned for a moment.

"What else?" At this time, Xu Cang slowly leveled the plane from a large slope while speaking.

Seeing that Xu Cang was going to level the plane, wouldn't the plane have to raise its head and slow down again, and be trapped in the quagmire of stalling? Although Tan Heling believed that Xu Cang's large slope turn was just a temporary measure, but it would be impossible to hold on for a while,

Push your head and rush towards the direction of stalling.

In a hurry, Tan Heling grabbed the wheel and didn't want Xu Cang to level the plane: "Xu Cang, how can you level the plane now?"

When Xu Cang saw that Tan Heling was still interfering with his operation at this time, he was furious: "Damn it, let it go for me! Instructor, put the landing gear manually!"

Tan Heling was scolded by Xu Cang and didn't know what to do. Mo Shangyun, who was sitting behind, reacted quickly and immediately lifted the artificial landing gear cover on the floor, without saying a word and not caring about it.

Which landing gear corresponds to? All three artificial landing gear handles were pulled out in turn.

"If you want to use gravity to put down the landing gear, I feel that it still needs some maneuver!" Mo Shangyun could understand Xu Cang's thoughts, but he was not very optimistic.

The reason why Xu Cang wanted to level up was because the way to manually place the landing gear was to completely use gravity to lower the landing gear and lock it. However, Mo Shangyun felt that the problem with the landing gear could not be achieved by relying on gravity.

As expected, usually a few seconds after manually placing the landing gear, if it is successful, the landing gear indicator light will behave. In fact, the operation of manually placing the landing gear has nothing to do with the position of the landing gear handle, that is,

Even if the landing gear handle is in the upper position, as long as the landing gear handle is pulled down, the landing gear can still be put down.

However, the landing gear handle is still lowered at this time. According to logic, as long as the left main landing gear is lowered and locked, it is consistent with the position of the landing gear handle, and the corresponding red indicator light will turn off.

However, after waiting for a few seconds, the red indicator light on the left landing gear still did not change at all.

Xu Cang looked up and there was another set of devices above the rear roof that could indicate the position of the landing gear with only three green lights. On those three lights, the green light on the left landing gear did not light up.

"I" Xu Cang almost cursed, but he didn't have time to wait any longer. The risk of plane leveling is too great.

However, Xu Cang obviously did not give up on the idea of ​​putting down the landing gear and locking it. In any case, the landing gear problem gave too many obstacles during the landing process. As long as there was a slight possibility, he still hoped to be removed.

However, Xu Cang cannot keep the leveling now, and if this continues, it will be a dead end. At this moment, Xu Cang pressed his left plate again, and the plane began to turn to the left with a large slope. However, the slope of the plane had just formed

At that time, Xu Cang didn't wait for a moment and directly pressed the driving wheel to the right full plate.

In this way, the plane is like autumn leaves swaying left and right, and the swing is very large. If it weren't for tightening the seat belt, the degree of swing alone could throw people out...

"He wants to throw the landing gear out with centrifugal force?" Tan Heling, who was next to him, immediately realized the intention of Xu Cang's approach, and was amazed in his heart that Xu Cang had many methods that were incredible.

However, after several attempts back and forth, the red indicator light on the left landing gear was so stubborn that Xu Cang abandoned the last glimmer of hope to extinguish it.

So, Xu Cang let go of his right hand from the thrust handle, grabbed the flap handle, and even without looking at it, he directly placed it at the bottom of the flap at forty.

"Xu Cang, artificial recovery requires the flap to land in the fifteenth place. No, you need the flap to land forty, and some landing gears should be put on the ground?" Tan Heling whistled: "Xu Cang, we can't get off at all now, how can the plane land in the ground?

?”

The flap forty is the landing configuration recommended in the inspection of "Partial or All of the Landing Gears" and the purpose is to minimize the grounding speed of the aircraft as much as possible.

In fact, there is also a requirement for circling fuel consumption in the inspection sheet, but the Boeing 737 does not have the function of draining oil in the air. If it only consumes fuel through circling, the efficiency will be too low, and it will take at least several hours.

With such a length of time and the current damage to the aircraft structure, this 1566 cannot withstand the required fuel balance conditions.

Therefore, Xu Cang directly passed the step of circling and consuming fuel, and directly started setting the flap to land forty.

However, the problem now is that the pitch posture of the aircraft is stuck in such an exaggerated state, even in a large slope turn, it can barely suppress the upward movement trend. Needless to say, landing, just turning the aircraft into a downward direction is a

An impossible thing.

Before the possibility of descent and landing was solved, Xu Cang began to advance to the step of landing configuration. How could Tan Heling understand it?

In fact, Mo Shangyun, who was sitting behind, didn't know how Xu Cang would land. However, compared to Tan Heling, who couldn't see the situation clearly, Mo Shangyun had a very good characteristic, that is, he knew how to believe in Xu Cang.

Believe in Xu Cang unconditionally.

"Xu Cang, are you going to start the second approach?" Mo Shangyun just asked this question, no way to descend, no way to land, no way to be prepared, no way to make a series of questions. He just wanted to know if it was done.

Decided.

"Yes!" Xu Cang said in a deep voice. At this time, the plane had already turned from turning to turning left: "The plane entered the left turn and was the beginning of approach. So, put the flaps down for me!"

If the aircraft fuselage is not damaged, if there is only a landing gear that has not been put down, Xu Cang may have more ways to try, such as landing solidly, then flying back, and knocking out the left landing gear. For example, make a bigger

Speed, smaller radius turns to obtain greater centrifugal force.

However, no matter which method is used, it will cause a huge load on the aircraft fuselage structure, and the most unsupported thing to the damaged fuselage is excessive load.

The plane is now the porcelain that is about to be broken, and there is no chance to play with it carefully. What Xu Cang has to do now is to gently place the porcelain that collapsed in front on the ground.

"Okay!" Xu Cang answered this, and Mo Shangyun no longer hesitated. He directly unbuttoned his seat belt, stood up and pressed the electric gate on the spare flap, and kept pressing it and not letting go...

At this time, Xu Cang began to gradually reduce the accelerator to slow down the plane. Because the aircraft is very strong and during the turn, as long as the accelerator is slightly reduced, the speed of the plane will drop rapidly.

However, the speed of the plane was about to stall, so Xu Cang just slightly reduced the accelerator and quickly added it. In fact, Xu Cang's slowing method was problematic.

Generally speaking, the reduction plan for flap must be reduced step by step as the flap is released. For example, when flap 5 is placed, the minimum speed of the aircraft cannot be less than the maneuvering speed of flap 5, otherwise, this will be

A warning may cause safety problems and will also limit the turning slope of the aircraft in operation, because the maneuverability of the aircraft is limited when it is less than the maneuver speed.

However, Xu Cang directly reduced to a speed of even less than the flap forty. That is, Xu Cang's deceleration plan was much faster than the release progress of the flap, and during this process, Xu Cang did not comply with the slope limit of fifteen degrees.

.

Therefore, strictly speaking, there are problems with Xu Cang's operation method. Mo Shangyun sat behind and saw it clearly, but he did not say anything, but chose to trust Xu Cang completely.

However, even so, Mo Shangyun still mentioned a little: "Xu Cang, is it too slow?"

Xu Cang didn't want to go through the repetitive process of increasing the speed and decreasing it again. Mo Shangyun can understand this. However, Xu Cang could not move the accelerator at all and just keep the speed. After all, the starting speed is close.

The approach speed of flaps is at forty.

However, Xu Cang still pulled down the accelerator to reduce the speed a little, thus approaching the stall speed at the top of the red and black speed belt. This speed is obviously smaller than the approach speed of the flap forty, which seems very abnormal.

.

However, Xu Cang just said lightly: "It's okay, I know it."

After hearing Xu Cang say this, Mo Shangyun is also tactful and never continues this topic.

Because the speed of the spare flap is slow, Xu Cang once again broadcasted the passenger when he was waiting for the flap to be lowered: "The aircraft will maneuver very significantly. Please make sure the seat belt is tied and grab the seat armrests at the same time."

Mo Shangyun, who was still pressing a hand on the electric gate at the backup flap position, raised his eyebrows, and his eyes moved away from the flap finger table, looked at Xu Cang, who was full of serious face, and suddenly said: "Xu

Cang, the aircraft structure is damaged now, can we do that maneuver?"

"So, we only have one chance to try!" Xu Cang's expression condensed, and then said: "Instructor, after the flap is lowered, the P6 board 3: D18 landing gear sounds a warning and jumps the switch, and the P6 board 2: B9 flight control automatically slows down

The board jump switch was turned off all of me."

One of these two jump switches is used to prevent landing gear sound warnings when setting up landing flaps. Because the left landing gear is not locked down, once it is placed on the flaps, the landing gear sound warning will sound.

This warning was originally intended to prevent the pilot from forgetting to put the landing gear, but when the landing gear cannot be released, this audio warning will interfere with the pilot, so it needs to be suppressed.

Another jump switch for the automatic speed reduction plate is to prevent the ground spoiler from accidentally rising when landing...

When landing on some or all landing gears is closed, it is different from the normal landing process. Only when the landing distance is limited and there is no way to go can you use the speed plate, otherwise the landing process will be carried out on some or all landing gears.
To be continued...