About three hundred feet, no longer descending!

The controller was stunned for a while and found that British Airways 1009 did not fall or rise, but it was really maintained at altitude at a low altitude, which was extremely strange.

At this moment, even though the controller did not understand the pilot's specific approach principle, at this moment he knew that the plane was definitely not on the correct track, and there were too many deviations, which could no longer be explained by human manipulation errors.

"BAT 1009, are you okay with your height? Why didn't you drop?"

After waiting for a second or two, Xu Cang's indifferent and firm voice came from the radio: "We can see the runway, and we turn our eyes and approach."

This sentence is said in English, but the tower controller was stunned on the spot. He stood up slightly and looked outside the tower glass. However, it was still dark. The lights in the airport were also looming, and the visibility was still

Extremely bad.

"Can the runway be seen in three hundred feet?" The tower controller was stunned by Xu Cang's call. In this era, some rules are not very standardized, such as the practice of turning the instrument closer directly into the visual approach.

It is actually an illegal practice to switch from instrument approach to visual approach in the middle of the instrument approach. First of all, it is not necessary to talk about the extremely harsh conditions that require visual approach. In the five-sided stage, the approach method cannot be changed at will. Instrument approach is instrument approach.

, Vision approach means visual approach, how can you fly as you want?

However, in the two thousand years, in many countries, civil aviation is still in its infancy, so it is really indulgent and the constraints on the rules and regulations are not strict. Therefore, the controller never felt that it was inappropriate because Xu Cang changed his approach.

What he felt confused was the fact that Xu Cang mentioned that he could see the runway at a height of 300 feet.

You should know that the vertical visibility of a type of blind landing only needs two hundred feet. If the British Airways 1009 crew can see the runway at 300 feet, wouldn’t that mean that the meteorological conditions at the airport are now more than one, completely

Can take off and land normally.

However, from a glance, the outside doesn’t look like a kind of weather or above.

The reason why Xu Cang used the excuse of turning to visual approach is that the flight restrictions for visual approach are relatively few. Otherwise, he was turning to visual approach and kept flat for a long time in the final approach stage.

Fei, that fool knows something is wrong.

Of course, it is actually quite strange to keep flying flat like this by visual approach, but it is a little easier to accept than instrument approach.

The tower controller looked outside again. He could not accept the fact that the airport is a kind of weather or above. At present, regardless of whether British Airways 1009 is about to land or not, he called out on the channel: "British Airways 1009,

Can you really see the runway? The weather conditions reported by the airport cannot even meet the three types of standards."

But after the tower controller asked a question, there was no response on the radio.

The tower controller looked at the radar and found that the plane was almost over the runway, but the height was still at 300 feet. At this time, even the tower controller realized that something was wrong.

"There is a problem, there is definitely a problem." He hurriedly picked up the microphone and shouted at the frequency again, his words full of anxiety: "British Airways 1009, why haven't you dropped yet, please report your intention."

However, there was no response to this call.

The tower controller didn't believe in the problem of radio failure, and his face turned pale. He vaguely felt what British Airways 1009 was going to do

They want to force the land!

Just as the tower controller had this idea, everything in the cockpit confirmed his idea.

That’s right, Xu Cang just wants to force the land!

As we approached the runway head, the VOR pointer began to deflect significantly. This was not the reason why Xu Cang deviated from the channel, but the sign of the inverted needle coming soon.

VOR full name VHF omnidirectional beacon is a common navigation device in the aviation industry. Unlike NDB non-directional radio beacons, VOR has direction indicators, that is, the VOR pointer on the aircraft will point to the VOR station in real time.

This real-time VOR station feature will lead to a situation where the VOR pointer will reverse 180 degrees when the aircraft passes the VOR station, which is what the second captain said before

Needle"!

Usually, VOR stations and DME stations are installed at the same address, which can not only provide direction information, but also distance information. However, Sukarno-Hadda Airport is really rare and is a simple VOR station.

Without DME distance information, it is impossible to defeat Xu Cang. Xu Cang used the characteristics of VOR inverted needles to judge the timing of flying over the VOR station, and it was because the VOR station happened to be on the runway, and the moment of inverting the needles was

The moment when Xu Cang enters the runway.

However, it is not enough to determine the time to enter the runway, because the aircraft needs to descend and enter the final correction. Even if the VOR channel guidance is accurately followed, there will still be errors in the end.

Therefore, Xu Cang needed to do another thing. Previously, using the method of turning the needle to determine the timing of entering the runway was just a small path, and subsequent actions were the moment that truly determines life and death.

The controller's call was still echoing in the cockpit, but it was no longer in charge.

"Xu Cang, this runway is 4,200 meters, but your entry height is too high. Is the runway enough?" The captain of the responsible person simply believed Xu Cang at this time. What he is concerned about now is whether the plane can go down.

, and whether you can stop at the end of the runway after landing.

Generally speaking, the height of the runway entrance is fifty feet, which is the most standard. Of course, some pilots will enter at a slightly lower height to make the final level comfortable.

Generally speaking, it is difficult to enter the market at a high level because it involves the problem of ultra-low altitude drop rate control. However, the height of Xu Cang's entry this time can no longer be described as being too high, it is sufficient to meet the standards.

The entry height is six times that, it is really outrageous.

Too high entry height will cause the final grounding point to move forward continuously, which means that the final distance for the aircraft to stop will become smaller and smaller.

Although the 4,200-meter runway is quite long, for a giant like 747, the 4,200-meter runway is actually not that much left.

Moreover, more importantly, whether the aircraft can descend after entering the runway and how it will fall is something that the responsible captain cannot understand.

If the descent time is pushed out, the remaining track will be even more precarious.

In short, even if he chose to trust Xu Cang helplessly, the captain responsible still felt extremely bleak about his future.

Just as the next moment when the responsible captain asked this question, Xu Cang suddenly spoke: "Drag the open space logic switch on the landing gear to me!"

The second captain was shocked on the spot by Xu Cang's request. Xu Cang's thinking jumped too fast, and he could not keep up with Xu Cang's rhythm at all!

However, at this moment, the pointer has turned ninety degrees on the VOR indicator!

"Quick! Unplug the open space logic and jump switch!" Xu Cang roared wildly.

"Fuck!" The second captain, who was completely unsure of the situation, believed Xu Cang unconditionally at this moment. He didn't care what Xu Cang wanted to do and immediately stood up.

The second captain had no experience, and he didn't need to find it. He directly located the open-ground logic jump switch in the landing gear area. After hesitating for a moment, he pulled it away in an instant.

"Xu Cang, pull it out!" the second captain shouted.

At this moment, the VOR pointer on the plane was about to turn back. Xu Cang did not wait for the pointer to completely turn back, but began to drop ahead of schedule. However, Xu Cang artificially controlled the decline rate and maintained a small decline rate of about 500.

Xu Cang was a person of insight. On his way back, he checked the topographic map of the entrance to the runway of Sukarno-Hadda Airport.

The five-side clearance conditions of the Sukarno-Hadda Airport runway 27 are indeed quite unbearable, but there are no obstacles near the runway head area, so there is no problem to set the height slightly ahead of time.

The three hundred feet of entry height put too much pressure on Xu Cang, so great that Xu Cang needed to drop early and reduce the actual entry height as much as possible.

However, even though Xu Cang knew that there was no terrain threat below at this moment, he could not let the plane get off too fast, because he was not sure whether the plane was accurately located on the runway. If it got off too fast, then finally

If there is a large deviation after the visual runway, the space left for Xu Cang to correct is relatively small.

"It's reversed!" The captain who has been paying attention to the VOR pointer reminded Xu Cang the moment he saw the pointer completely reversed.

Xu Cang's eyes moved downward, and there was nothing he saw. At this moment, the airport runway lights should be the brightest, which was particularly obvious at night, but it was less than three hundred feet away. Xu Cang didn't even see the shadow of the light.

.

However, Xu Cang was not frustrated with not seeing the runway lights. He had expected it before. If the runway lights could be seen at 300 feet, the measurement equipment at Sukarno-Hadda Airport would have been sent to the garbage dump.

It's right.

Therefore, Xu Cang needs to do something at this moment.

At this time, the responsible captain and the second captain both held their breath and concentrated. Finally, they were about to see how Xu Cang completed the final decline!

So in the eyes of the two of them, Xu Cang pushed the No. 1 and No. 3 engines forward with his left hand, then pressed the timer, and finally pulled the reverse push of the No. 2 engine directly.

The captain and the second captain were shocked when they saw Xu Cang pulling the second engine in the air and pushing back. Especially the second captain, he finally knew why Xu Cang asked him to pull out the logic of the open space to jump the switch.

It's right.

It is quite dangerous to drive backwards in the air. Almost nine years ago, a Boeing 767 aircraft was accidentally opened in the backwards in the air while performing a flight, and the plane quickly disintegrated.

Therefore, aircraft from Boeing or other aircraft manufacturers have put in the effort to limit the reverse push, and the most important one is to suppress the air opening of reverse push.

In fact, if the reverse pushing device is artificially pulled up during normal air operations, the reverse pushing device will not work. This is written into the behavioral logic of the aircraft.

Therefore, if Xu Cang wants to turn on the reverse push in the air, it must suppress the airplane's air-ground logic system. However, the air-ground logic system of the air-ground logic system is attached to the landing gear and there is no button or electric gate on the panel that can be directly used.

Turned off. Therefore, Xu Cang could only ask the second captain to manually unplug the relevant jump switch.

The unit is often not allowed to unplug the jump switch by itself, because this will bring about some unknown situations. However, Xu Cang obviously can't control so much.

It was under the almost fearful gaze of the responsible captain and the second captain, and even the second engine did not turn on the reverse thrust under the slow thrust. Almost at the moment when the reverse thrust was turned on, the aircraft fuselage experienced extremely violent tremors.

.

Why did Xu Cang need to add the throttle of the No. 1 and No. 3 engines before pulling up the No. 2 reverse push, that is, to be able to barely maintain the altitude and speed of the aircraft when the No. 2 reverse push is opened.

Of course, this situation will definitely not last for too long! However, Xu Cang did not intend to let this dangerous situation happen for too long.

Ten seconds! Ten seconds is the limit that Xu Cang can tolerate! Nine years ago, it took only twenty-two seconds for the Lauda Flight 004, which crashed due to the accidental opening of the air counter-push, to disintegration.

Xu Cang was unwilling to repeat the mistakes of Lauda Flight 004.

Just when the captain responsible was afraid of Xu Cang's crazy actions and thought about whether to stop him in time, his eyes suddenly condensed, and there was a slight light lit up in front of which was originally pitch black.

That's the lights of the runway!

However, the light appeared and seemed to exist, or it seemed to be an illusion, making people unable to see it clearly.

However, it was this real and illusory light that directly dispelled the captain's idea of ​​interfering with Xu Cang. At this moment, the captain's idea of ​​responsible was flowing, and he seemed to understand Xu Cang's idea.

That is, the huge forward airflow generated by reverse pushing is blown away the volcanic ash in front of the aircraft at an ultra-low altitude so that the unit can see the runway lights. As long as the unit can see the lights, it is a reference and it can fall down.
To be continued...