Xu Qing didn't open any pot, and the captain's face turned black all of a sudden. Now the nerves of the leaders of Blue Airlines are about to collapse, and if they dare to land again, the leaders dare to remove the captain's position that he has not yet sat on.

"There should be no problem!" The captain didn't have much confidence when he spoke, judging from the general wave just now, it was not just a big gust of wind, but also a big crosswind of about 10 meters close to 90 degrees.

This is the typhoon season in K City, the most uncomfortable part of the year.

After descending to 10,000 feet (relative to the airport), the turbulence of the airflow is clearly felt.

Airplanes are like boats drifting on the waves, up and down, and it is difficult to maintain airspeed.

The state is unstable in the approach and clean state, after all, the margin is very large, but as long as the flaps are started, the margin begins, and the speed cannot be allowed to change drastically, otherwise the speed will exceed the limit, and it will be enough for them to drink a pot for the whole group.

This time, we entered the port from the direction of MEBNA, runway 21, and the direction of entry was straight to the five sides.

"Blue 9846, flight course 220, radar guidance, down altitude 4500, corrected sea pressure 1022." Approach Control Command Road.

"Heading 220, radar guidance, lower altitude 4500, corrected sea pressure 1022! Blue9846! "A replay

"Blue 9846, the front aircraft reported moderate or above turbulence below 4200, if you can't keep flight data, please let me know immediately!" The approach broke out a bombshell news, which made Xu Qing's heart tremble, and he could make the approach control specially remind Xu Qing of them.

"Approach, to confirm, did the front aircraft abort the approach or go-around due to turbulence?" The captain heard that the approach control was so serious, and reminded him to ask.

The approach control immediately replied: "One plane has made a go-around flight on five sides and six nautical miles, one plane has stopped the approach while the channel has been established, and both planes have been diverted!" ”

"Prepare ...... Alternate landing? Xu Qing's lips trembled, and he was ready to land, what did he have to shake into?

According to approach control, the turbulence is below 4200. Five sides and six nautical miles, according to the altitude-to-distance ratio, the altitude at that time should be about 2,000 feet above the altitude of the airport, plus the altitude of the airport, that is, more than 9,000 feet. The other plane encountered strong turbulence while establishing a shipping lane. According to the usual command habits of the K-City airfield, the approach will allow the aircraft to descend to 3,600 meters and then intercept the channel. After intercepting the channel, it descends to an altitude of 3,300 meters and tries to intercept the glide path.

In the case of approach control, the aircraft was in the process of establishing a shipping lane, not aborting the approach after interception.

That is, the turbulence seems to be getting worse with the decrease in altitude, which is related to the terrain around the airport in K.

"Blue 9846, down altitude 3900, left turn course 200." Xu Qing, the commander of the approach control, began to turn left, that is, cut to the five sides.

Now Xu Qing and their position are still some distance away from the five sides, and when the distance is a little closer, they will generally command the altitude of 3,600 meters before intercepting the channel.

"Lower altitude 3900, left turn course 200, blue 9846." A pair of repetitions.

The captain adjusted the altitude of 12,800 feet on the MCP, giving a descent rate of 800, now the altitude is okay, there is no need to go down too fast, and the turbulence below is obviously stronger, the descent rate is too large, the automatic throttle will indicate a lower N1, in case of sudden strong turbulence, the low throttle is easy to lead to the low energy state of the aircraft, and then there are some abnormal states.

"The turbulence below is very strong, so let's not put the flaps when we turn, and then put the flaps when we turn around and flatten them." The captain said.

Now that the position is normal, why should the flaps be released, but the captain took into account the factor of increasing the maximum speed, the captain still decided to wait for the flaps to be released, and deliberately made it clear to the co-pilots.

As we all know, the air load of the aircraft, that is, the G value, will fluctuate sharply under severe turbulence, and it is common to exceed 2G in severe turbulence. And the air load, the slope (that is, the turning process), the landing gear, the speed brake, the anti-icing.

The increase in air load combined with a rapid increase in maximum speed during the turning process to a speed greater than the current speed will cause the aircraft to shake its bar, which is typical of low-energy conditions during the turbulence of the wind season.

One nodded his head to indicate that he had no opinion.

The captain used the heading selection to start turning left, and when the plane descended not long and the plane was still in the process of turning, the turbulence and shaking of the plane suddenly intensified, and the degree of turbulence even made Xu Qing's body in the seat belt shake constantly.

Xu Qing keenly noticed that the captain's body straightened and tightened his seat belt, and he could see that the captain was also a little nervous.

Xu Qing's heart tightened, this has not yet reached the height of the front plane's stop approach, it is so upside down, what will it look like if it goes down, no wonder the front opportunity to stop the approach.

Just when Xu Qing felt bad, a continuous clear warning sound suddenly appeared, and the automatic driving disconnect light flashed at the same time.

It was very turbulent just now, Xu Qing was already very nervous, and the pilot was quite sensitive to the warning sound, as long as there was a sound, a few hairs would stand up.

The strong turbulence actually broke the autopilot, and at this moment, the degree of turbulence intensified instantly, and Xu Qing's teeth were constantly chattering even in the bump, even if he clenched his teeth.

The captain was already on the steering stick with one hand on the and the other on the accelerator after less than 10,000 feet, taking over the plane at the same time as the autopilot was disconnected.

After the captain flew manually, he found that the turbulence was completely beyond his imagination, and he could not control the plane at all with his left hand.

"Start the electric gate flight position!" The captain immediately ordered the first pair to turn the starter door to the flight position, which was required in severe turbulence. At the same time, the captain disconnected the autothrottle, and the autothrottle of the 737 had lagged heavily in this strongly turbulent environment, and could no longer keep the autothrottle on.

At this time, they found that they could no longer maintain a turning state, and maintaining a horizontal attitude in such a strong bump situation was the optimal solution, which is also the state in which the fuselage can bear the maximum load.

"Notify the control, unable to continue to turn left, request to keep course." The captain also found that they could no longer continue to turn and could no longer carry out the control orders.

The captain's instructions were exactly in line with the idea of the first pair, and the first pair helped to watch the state of the plane and at the same time notified the control: "Blue 9846, encountered turbulence, apply to maintain the course." ”

"Blue 9846, you can keep the course and change the report!" The approach immediately agreed to the application of Blue 9846, and he also knew what the situation of the low-altitude turbulence was.

"Give the cabin a signal to stop all service activities!" The captain is really still the captain, and he can still think about the cabin under such conditions.

One pair did not execute it immediately, but said: "Captain, you have to wear five sides, there is a mountain in front, you can't go down!" ”