If he could use military radar without restrictions and consequences, Xu Cang would naturally refuse. However, Xu Cang did not believe that he could remove all responsibilities after landing.
If it can land by itself, then no matter how serious the matter is, it is still an internal matter of the civil aviation industry. However, once the military is involved, the nature of the matter is likely to change.
Do you really think the military is just a game, you can use it whenever you want, and then everything will be fine?
Yokosuka is located in a strategic position guarding Tokyo Bay, and its geographical location is extremely important. How important is the radar there? To call up the radar data of Yokosuka for a civil airliner, wouldn't it be necessary to check the radar data of the three generations before it?
This is not an exaggeration. The radar used for the defense of the capital shares data with the radar of the civilian control agency. What if the data is leaked? Not to mention whether Japan will agree to provide assistance, even if it agrees, Xu Cang dare not accept it.
Intellectually speaking, the possibility of this extreme situation happening is very small, but once it happens, Xu Cang will be in endless trouble.
The capital’s garrison radar data has been leaked, who dares to take responsibility?
Moreover, the most important thing is that Xu Cang has his own way to deal with the current situation. This is not Xu Cang showing off, but a real and effective method. Since he has a way to avoid taking risks, why should he take risks?
"Xu Cang, do you really have a way to fly down?" The supervisor said, "If you are worried about other problems, you are worrying too much. Even if there is any problem, I, as the commander, will take full responsibility."
"If something really goes wrong, can you afford it?" Xu Cang asked back.
The supervisor does not need to be responsible for small problems, but he cannot afford to take responsibility for big problems. The so-called guarantee here is simply meaningless.
Xu Cang freed his left hand, held the oxygen mask and covered his face with it, using it to block the impact of the airflow. However, since the cover was not tight, the airflow would still squeeze in through the gaps, and after a long time, his eyes could not bear it.
However, this will allow you to last a little longer than looking up at something without any protection.
This time Xu Cang did not look outside, but looked up at the cabin altitude indicator on the pressurization panel.
"Give me the heading and altitude!" Xu Cang was already a little tired of arguing with his supervisor about the necessity of the so-called military radar: "If you want help, please help me contact Yokohama Airport and prepare police and medical personnel."
In the control room, the supervisor gritted his teeth and stopped talking about the military radar: "ANA45, turn left, heading 340, descend to standard air pressure FL120."
Civil aviation in Japan uses the imperial system, not the metric system used in China. Of course, most civil aviation in the world also uses the imperial system, and only a few use the metric system.
"Turn left, heading 340, lower mark FL120." Xu Cang repeated.
The so-called FL120 means an altitude of twelve thousand feet.
After reciting it, Xu Cang thought for a moment and directly released the throttle. Originally, he wanted to pull up the speed brake, but considering some unexpected situations, he gave up this idea.
To be honest, the windshield crack just now did not cause any other damage to the aircraft, so it is better to descend relatively gently. The speed brake itself destroys the fit of the airflow on the upper surface of the wing, forming turbulence on the upper surface of the wing.
Due to the existence of turbulence, the wings will be linked to flutter. However, as long as the turbulence is not very strong, the wing flutter will not be too severe, unless the speed brake is pulled beyond the flight position. Now, Xu Cang is not sure whether the broken windshield will cause some unknown damage to the aircraft, so it is better to be careful.
At this time, the aircraft is relatively stable and there is no need to pursue a high rate of descent.
In the control room, after issuing the initial command, the supervisor thought for a moment and instructed his assistant, "Contact the Self-Defense Forces and apply for radar data sharing. The detection location is 139 degrees 13 minutes 58 seconds east longitude and 34 degrees 24 minutes 01 seconds north latitude, with a range of 20 nautical miles."
The supervisor gave the approximate location of ANA Flight 45, making it relatively easy to locate the aircraft.
However, this seems to contradict the conversation between the supervisor and Xu Cang just now.
"Doesn't he need the help of military radar?" the assistant was puzzled.
The supervisor hesitated for a moment and said, "It's his business whether he wants it or not, and it's my business whether I apply for it or not. You don't have to worry about it, just go and talk to the Self-Defense Forces."
"But..." The assistant was a little embarrassed: "If we ask the Self-Defense Forces for help..."
To be honest, even the assistant felt that asking for help from the Self-Defense Forces would bring him a lot of trouble, but since his boss had made it clear, he couldn't persuade him any further and could only nod: "I understand."
In the cockpit, Xu Cang was not concerned about the airspeed and altitude. In comparison, the broken windshield had a greater impact on him.
In a high-altitude environment, the speed margin of the aircraft in a clean state is relatively large, so Xu Cang can directly use the ground speed as a reference. Of course, the ground speed is not consistent with the calculated airspeed on the PFD. The ground speed is the vector sum of the indicated airspeed and the wind speed.
However, the plane was not at a very high altitude at the moment. If it was at a high altitude, there would be winds of hundreds of knots at any time, and the error between the two would be relatively large. On the navigation page at this moment, even though there was no navigation information, the wind direction and speed displayed in the upper right corner was still normal, which was enough for Xu Cang to refer to.
Fortunately, the wind direction is roughly from west to east, which is basically a positive crosswind relative to the direction of the aircraft's flight. In terms of vector calculation, it basically has no effect on the result, that is, the ground speed is slightly equal to the indicated speed. However, all this is naturally based on the premise that the airspeed margin is large under the smooth configuration. If the airspeed margin between the red and black speed bands becomes smaller after the flaps are lowered, then it cannot be estimated in this way, but a relatively accurate value must be calculated mentally.
The current situation is that the wind direction at more than 10,000 feet is from west to east. If Xu Cang is lucky and the wind direction is the same at low altitudes, he can save a lot of mental calculations.
If Xu Cang remembered correctly, the runway of Yokohama Airport was 09/27, which was a standard east-west direction. In this way, the direction of the runway was basically consistent with the direction of the low-altitude wind, which made vector calculation much easier. Otherwise, if there was an angle between the wind direction and the runway, it would increase the difficulty of vector calculation, which would obviously increase the workload for the approach phase.
Of course, there is no necessary relationship between the wind direction and speed at more than 10,000 feet and the low-altitude wind. It can only be said that Xu Cang has such a vision. After all, he still hopes to move less if he can use his brain less.
However, in extreme cases, Xu Cang can even ignore the indicated speed and fly at ground speed. Flying at ground speed instead of indicated speed is not groundless. For example, Airbus, which has a higher degree of automation, does not refer to the indicated speed when calculating the aircraft energy, but directly refers to the ground speed.
The indicated speed is affected by many factors, but the ground speed is not. The ground speed is the speed of the aircraft relative to the ground. It is not affected by wind and altitude and is the most intuitive. Even in the approach chart, the chart for pilots to estimate the descent rate is based on the ground speed.
However, Boeing has become accustomed to flying at meter speed, and I wonder if it will be a problem of plagiarism if they directly use Airbus's products. As long as conditions permit, it is better to fly at meter speed.
However, there was one thing that Xu Cang was concerned about, which was whether the ground speed would have the same problem as the speedometer.
As we all know, the ground speed of an aircraft is calculated based on the inertial navigation system and the GPS system. Nowadays, the navigation page function of the aircraft is not working, but Xu Cang guessed that it has nothing to do with the inertial navigation system, but is caused by a partial failure of the atmospheric data reference component.
Logically, they shouldn't affect each other. But Xu Cang is not a Boeing engineer, and many things about the 737 are not all written in the manual. This leads to Xu Cang not knowing whether some problems with the atmospheric data inertial reference will also affect the accuracy of the ground speed.
Of course, as Xu Cang was far from being at the end of his rope, he had his own way to verify whether there was any problem with the ground speed. If there was no problem, that was great. If there was a problem, we would talk about it later. Xu Cang, who had experienced many ups and downs, could still be restricted by a small airspeed?
After all, the people in Japan have not personally experienced the special situations that Xu Cang has handled. If the people in the Tokyo regional control room communicate with those in the Jianchuan regional control room, the unreliable airspeed and altitude will not cause any waves in the Jianchuan control room, which has been tortured several times.
After all, they had experienced most of Xu Cang's special situation handling together with the Jianchuan tower control room. Apart from anything else, their psychological qualities were absolutely top-notch. They would not be as jumpy as the supervisor of the Tokyo area control room.
As for the height, Xu Cang certainly has his own way of dealing with it! It can even be said that compared to estimating the speed using ground speed, Xu Cang's way of judging the height is more accurate and effective.
Everyone knows that there are three altimeters on the plane, one on the captain's side, one on the co-pilot's side, and one on the standby instrument. But in fact, the plane also has another altimeter, but most of the time, it does not indicate the actual altitude of the plane. That is the cabin altimeter, which is used to indicate the pressurization altitude inside the cabin.
Normally, due to the existence of the pressurization system, the cabin altitude and the actual altitude of the aircraft are completely unequal. In automatic pressurization mode, following the automatic pressurization plan, there is a proportional correspondence between the two.
However, in some extreme cases, such as complete decompression, as it is now, since pressurization no longer exists, the cabin altitude should be equal to the actual altitude of the aircraft.
Therefore, even if the altimeters on the captain's side, the co-pilot's side and the backup instrument are all unusable, the actual altitude of the aircraft can still be judged according to the cabin altimeter.
Perhaps no one could have thought of that, but for Xu Cang, whose thinking was not blocked at all, he had already understood its substitute function the moment he looked up and saw the cockpit altimeter.
Xu Cang's skills are unparalleled, and his thinking is equally amazing when it comes to divergent thinking in special circumstances.
Moreover, there is an error in estimating the indicated speed using the ground speed. However, after the windshield is broken, the cabin is connected to the inside and outside, and the cabin altitude is completely equal to the aircraft altitude. Then the cabin altimeter can accurately indicate the pressure altitude of the aircraft without the so-called error.
In the absence of visual observation, obtaining a more accurate altitude is more important than speed. After all, in extreme cases, Xu Cang can even determine the speed range of the aircraft through physical sensation.
Anyway, there is no difference between landing at a higher speed and landing at a lower speed in most cases. However, the height cannot be determined by physical sense, and if it hits the ground, the difference will be huge.
Therefore, in Xu Cang's view, the most important height problem can be solved very cleverly, and everything is naturally under control.
In fact, what Xu Cang found most difficult was the process of looking at the cockpit altimeter. Since the cockpit altimeter was on the front ceiling, he had to look up to see it. Moreover, the cockpit altimeter was different from the electronic display on the PFD. The cockpit altimeter was a mechanical instrument and was not as easy to read as the electronic display.
In addition, the cabin altimeter is actually integrated with the cabin differential pressure gauge. The two gauges share the same dial, but the difference is the inner and outer circles. It is easy to read it wrong if you are not careful. Because the windshield is broken, it is difficult for Xu Cang to read the cabin altimeter. The altimeter and the differential pressure gauge are also built together, so it is not impossible to read the wrong reading.
However, the only thing Xu Cang could feel thankful for was that the speed was still relatively high. Once the flaps were extended, the speed would be reduced, and the impact of the airflow might not be as strong as it was now. Moreover, in order to reduce the speed as much as possible, Xu Cang might need to use the landing configuration with flaps 40.
Before the control gave the altitude order, Xu Cang took a look at the cockpit altimeter. The altitude was more than 14,000 feet, which was very close to the commanded 12,000 feet. At slow engine thrust, it could be reached in an instant.
Xu Cang only held the thrust lever at slow speed for five or six seconds, and then began to slightly increase the throttle. He couldn't keep looking up at the cockpit altimeter, so in the last few hundred feet, he needed to reduce the descent rate to avoid crossing 12,000 feet due to a too high descent rate.
However, Xu Cang felt that in the already cleared Tokyo airspace, there shouldn't be any problem if he deviated slightly from the controlled altitude.
Soon, before even reaching exactly twelve thousand feet, the next altitude instruction came down.
"ANA45, continue to descend to 6,000 feet, corrected sea pressure 1012." After saying this, Tokyo Control added: "Please strictly maintain the corrected sea pressure of 6,000 feet. "
After Xu Cang finished reciting, he became suspicious. Logically speaking, according to Xu Cang's estimation, we should be close to the approach airspace of Yokohama Airport. There shouldn't be any terrain around, and the aircraft in the nearby airspace have been cleared. What does it mean to strictly maintain an altitude of 6,000 feet?
In radio communications, this special emphasis on altitude maintenance generally occurs when the aircraft is about to cross or fly over terrain obstacles.
However, Xu Cang did not think much about it and began to descend according to the cockpit altimeter.
Actually, Xu Cang had some doubts in his mind. That is, the cockpit altimeter did not have a QNH adjustment knob, which meant that Xu Cang could not adjust the corrected sea pressure value according to the 1012 provided by the controller. To be honest, Xu Cang was a little unsure whether the cockpit altimeter generated the altitude value based on the corrected sea pressure, field pressure or standard air pressure.
Xu Cang is not a god, and he does not know everything, like this question.
However, logically speaking, the field pressure reference should be excluded. Because if the cabin altimeter is based on the field pressure reference, then after landing, when the cabin is fully depressurized, the value of the cabin altimeter should be zero. However, in actual operation, Xu Cang occasionally paid attention to the cabin altimeter. He was not sure what the specific value was related to, but it was definitely not zero.
In comparison, Xu Cang was more inclined to believe that the cabin altimeter was naturally based on the corrected sea pressure, because he seemed to remember that the cabin altitude after landing was consistent with the airport elevation. However, Xu Cang would not deliberately check such things, so he only had a general impression and was not too sure.
Fortunately, the corrected sea pressure in the Yokohama area was 1012, which was very close to the standard sea pressure of 1013. Even if Xu Cang remembered it wrong, the altitude value on the cockpit altimeter was only 27 feet away from the actual altitude, and this deviation was acceptable.
This time, the altitude was slightly higher. During this time, Xu Cang called the cabin again, and the captain answered the call soon. After asking about the specific situation in the cabin, Xu Cang finally breathed a sigh of relief. Except for a passenger with a filling in his tooth that had obvious bleeding due to the sudden change in air pressure, the rest of the people were in good condition.
The oxygen masks in the cabin can generally last for more than ten minutes, and the time consumed from decompression to descent to nearly 10,000 feet did not even exceed ten minutes, which is considered a relatively quick response.
"But during the descent, the plane seemed very unstable. I felt several large rolls and dives. Some passengers must have been surprised during the maneuvers," said the captain.
It was difficult for Xu Cang to answer this question. He couldn't say that he had let the plane fly freely during the descent. If he said this, the captain might fight him to death.
"I didn't pay that much attention during the emergency descent." Xu Cang made up an excuse and immediately changed the subject: "Locking the door is not a solution. I can't open it from the inside. Do you have any way to try to open it from the outside?"
The captain thought for a moment and said, "In the past, the old-fashioned cockpit doors were equipped with keys. The flight crew had one key, and the chief steward had another key. However, now that we have switched to an electronic locking system, it seems that there is no such thing. Unfortunately, our company has only recently changed the locking system, and many things have not been publicized. I am not very clear about some things."
"This..." Hearing this, Xu Cang was speechless for a moment: "I remember that this electronic locking system has an entry and exit password, do you know?"
"Is there a password?" The captain was sitting in the flight attendant's seat in the front cabin workroom at this moment. When he heard this, he leaned out and looked back at the cockpit. Sure enough, he saw an input device similar to a password keyboard on the door frame on the right side of the cabin door.
"Really?" The captain was stunned. It was exactly as Xu Cang said. This newly installed electronic locking system had a password input device.
In fact, the captain must bear some responsibility for the current situation, but he cannot be blamed entirely. ANA had just changed its electronic locking system, and many publicity matters had not been implemented. Many crew members only knew the general idea, and many details were missing.
"Yes, yes." The captain said quickly, "But I don't know the password?"
Xu Cang was really speechless by ANA's theoretical promotion work: "Since it is an old-style cabin door lock, the flight attendant will keep a copy of the key, so does the flight attendant know the combination of the cabin door lock?"
However, Xu Cang regretted it the moment he said it. The flight attendant seemed to have passed out due to excessive blood loss, and no one knew what his current condition was.
"Where is the chief flight attendant?" Xu Cang asked hurriedly.
"He's still unconscious." The captain was quite helpless. He felt like he hadn't been of any help.
Xu Cang had expected this, and although he was disappointed, he didn't show it strongly. He was silent for a moment, looked at Kuroda Takashi who was also in a coma on his left, and suddenly said: "Now you can't come in to help, and I can't get away and I don't have the tools to restrain him... Just in case, I can directly..."
Xu Cang didn't say anything more, but the captain understood what Xu Cang meant. Often, the energy consumed in subduing a person is far greater than directly killing a person. From Xu Cang's point of view, he didn't have a rope, nor any other tools to tie up Kuroda Takashi. Even if he had, Xu Cang couldn't give up the control of the plane and spend a long time to control Kuroda Takashi.
Relatively speaking, it is a more neat and simple way to solve it directly. In the storage box on Xu Cang's right hand side, there is a ballpoint pen left by the previous co-pilot. A pen can do many things.
However, after thinking about it, the captain advised: "I don't think you should do this. If you directly solve the problem while he is unconscious, you will be in big trouble after landing. Maybe you are not from here. Of course, in other parts of the world, certain customs will condemn you afterwards, and the pressure will be very great."
Xu Cang pondered for a moment and finally accepted the captain's opinion.
The world has been peaceful for too long, so there are more and more people with Madonna sentiment in today's society. They care for everyone with a love that transcends human morality, even if that person is an unforgivable criminal. If Xu Cang had taken action when Kuroda Takashi was unconscious, after landing, as the incident was exposed, there is almost no doubt that Xu Cang would definitely be labeled a butcher by some people.
This is a fucked-up thing, but it actually happens in this society.
Moreover, there is another thing that Xu Cang is more concerned about, which is whether taking action now will involve legal issues.
To be honest, this touches upon Xu Cang's blind spot in knowledge.
If we had solved the crime directly when Kuroda Takashi was committing the crime, there would have been no legal problems. However, now that Kuroda Takashi has lost the ability to continue committing crimes, what would it mean to solve the crime at this time?
Many times, legal matters conflict with people's intuition.
It's like legitimate defense in law. When the gangster slashes you for the first time, you fight back, that's legitimate defense. But if you fight back after the first slash, that's excessive defense, because when you fight back, the other party's behavior of harming you has stopped. (Of course, it's not so harsh now.)
Isn't this rather counter-intuitive?
There are considerable risks both from the perspective of public opinion and the law. After careful consideration, Xu Cang gave up the idea of ​​solving it directly.
There is no way. Since we still have to live in this society, we have to follow some of its rules, even if these rules seem unreasonable.
Soon, the plane descended to 6,000 feet. Less than half a minute after leveling off, the controller suddenly asked, "ANA45, are you maintaining the correct sea pressure of 6,000 feet now?"
"Yeah, what's the problem?" Xu Cang quickly glanced at the cockpit altimeter, which was exactly six thousand feet.
In the control room, after connecting to the Self-Defense Forces' military radar data, the altitude information on ANA Flight 45 returned to normal, showing six thousand feet.
"Does he really know what the altitude is?" The controller was quite surprised. It seemed that Xu Cang could really solve the altitude problem by himself.
Xu Cang reacted quickly. As soon as the controller asked this question, he guessed: "Have you connected to the military radar?"
"Xu Cang, I must guide you to 13 nautical miles on the fifth side of Runway 27 at Yokohama Airport. Although you disagree with the use of military radar, I also have my position, and I hope you can understand. This is my personal action and has nothing to do with you. You are right, you can solve it, then I feel relieved. Under normal circumstances, I will not provide you with radar data. I will only remind you when there is an obvious deviation." The supervisor said: "In this way, if you approach normally, you will not be considered to have used the military radar, and it will have nothing to do with you."
The 13 nautical miles on the fifth side of Yokohama Airport's Runway 27 mentioned by the supervisor is a specific location point. The control panel of ANA Flight 45 was broken and the APP mode could not be used, but the navigation panel was not broken and could still tune the blind landing frequency of Yokohama Airport's Runway 27, and naturally it could also receive blind landing signals, thus forming guidance on the localizer and glide path on the PFD.
Under normal circumstances, after having the localizer and glide path guidance, there is no need to worry about the altitude. Because in theory, the localizer and glide path can guide the aircraft all the way to the runway as long as the pilot controls it finely enough.
However, the glide path signal of Yokohama Airport's Runway 27 has some problems, and it fluctuates at about 15 nautical miles, so it is definitely impossible to intercept the glide path beyond 15 nautical miles on the fifth side. The navigation notice issued by Yokohama Airport also recommends intercepting blind landing at 10 to 13 nautical miles on the fifth side to avoid areas with unstable glide path signals.
Therefore, the supervisor only needs to guide Xu Cang to the fifth side and thirteen nautical miles of No. 27, and he doesn't need to worry about anything else.
However, to intercept a blind landing at this altitude, they would have to descend to about 3,000 feet. The minimum safe altitude within 25 nautical miles around Yokohama Airport was 6,000 feet. If Xu Cang could not maintain 6,000 feet accurately, it meant that Xu Cang could not control the altitude by himself. Unless Xu Cang could accept the guidance of the military radar later, his supervisor would not let him enter the vicinity of Yokohama Airport.
Although I don't know what means Xu Cang used, but Xu Cang did it. He said he would go down to 6,000 feet, and he went down to 6,000 feet accurately without any error. In this way, at least the supervisor was willing to guide Xu Cang to Yokohama Airport.
"Whatever!" Xu Cang didn't care. He even added, "But I don't think you can guide me down to 3,000 feet."
"What do you mean?" The supervisor was stunned, obviously not understanding what Xu Cang meant.
Xu Cang was not interested in answering this kind of question, but directly asked: "Now that the verification is done, can you continue to guide me?"
Seeing that Xu Cang had no intention of answering, the supervisor did not dare to ask the reason. He glanced at the radar screen and continued, "Turn left now, heading 300, and continue to descend at an altitude of 3,000 feet."
Since the navigation page was unavailable, Xu Cang could not see his relative position to Yokohama Airport. However, according to the heading given by the controller, Xu Cang felt that this should be the direction of the final approach. So he decisively began to continue to descend in altitude and continue to turn left.
At the same time, Xu Cang began to look through the aeronautical chart book of the previous co-pilot. Fortunately, Xu Cang still remembered the four-letter code RJHT of Yokohama Airport, so he quickly found the corresponding aeronautical chart. At this time, Xu Cang had to sigh how great the electronicization of aeronautical charts in later generations was. Looking through the aeronautical chart book was really a tiring job.
However, after complaining for a while, Xu Cang quickly found the blind landing approach map for Yokohama Runway 27 and set the blind landing frequency according to the instructions on the map.
The blind landing on Yokohama Runway 27 is equipped with DME ranging. Once the blind landing frequency is adjusted, although there are no signals of the localizer and glide path due to the long distance, the distance to the runway appears in the upper left corner of the PFD.
Thirty-seven nautical miles!
Not far!
Since the flight was completely manual and the navigation page function was not available, Xu Cang did not even select the approach procedure on the CDU, as it was all radar-guided anyway. However, he eventually made some very simple approach preparations, such as setting the automatic brake.
After estimating the landing time in his mind and talking to the cabin at the back, Xu Cang completely entered working mode.
What also made Xu Cang happy was that as the altitude decreased, the wind direction did not seem to change much. This was good for the subsequent calculation of speed, at least it could save Xu Cang a lot of work.
After learning the estimated landing time, the captain had already asked the first-class cabin attendant to make a passenger announcement. Although the feeling of this flight was very bad, after the danger occurred, there was some confusion among the passengers in the cabin, but it did not develop to the point of being out of control in the end.
No matter what, it's finally landing and everything is over.
The captain did not go back to the first-class cabin to sit, but continued to stay in the flight attendant's seat. Suddenly, he seemed to hear some groans, and when he tilted his head, he found that the flight attendant lying in the front row of the first-class cabin seemed to move.
"woke up?"
The captain was delighted. Although the flight attendant had worn an oxygen mask during the decompression, she had lost too much blood and was in very poor physical condition. The captain was not confident that she could survive. Now that the flight attendant had taken action, even if it was extremely minor, it was enough.
The captain hesitated for a moment, then thought of what Xu Cang had said about the cockpit code, unbuckled his seat belt, and walked two steps to the first-class cabin, to the seat next to the chief flight attendant.
At this moment, the captain could see the situation outside through the porthole, and the ground was clearly visible, which meant that the plane was not far from landing. However, according to what he had said to Xu Cang before, it seemed that the hijacker might still wake up. To be on the safe side, it would be best if he could open the cockpit door and go in to help Xu Cang completely subdue the hijacker.
He knew that the flight attendant was very weak, but he still asked with a glimmer of hope: "Flight attendant, do you know the cockpit password?"
Xu Cang naturally didn't know what happened in the cabin, including the waking of the flight attendant and the captain asking for the cockpit password. After descending to 3,000 feet, Xu Cang found that the wind speed was relatively weak, only more than 30 knots, and it was at a relatively standard 30-degree angle with the flight heading, which made it easy to calculate the corresponding speed.
Xu Cang was familiar with the throttle and attitude for level flight, climb, and descent at each stage. After maintaining an altitude of 3,000 feet for a while, the localizer signal that had not moved before soon responded first and began to move slowly to the center, indicating that the aircraft was extremely close to the fifth side of Runway 27 at Yokohama Airport.
Since it was a manual operation, while the localizer signal gradually returned to the center, Xu Cang also began to make a relatively small slope to slowly turn left in order to gently cut into the localizer.
At first, the supervisor in the control room did not understand what Xu Cang meant when he said they could not guide them to 3,000 feet. When the plane descended below 4,000 feet, the altitude information originally obtained by connecting to the military radar immediately began to show abnormalities, and could not display real-time altitude information following the descent of ANA Flight 45.
When approaching 3,000 feet, the altitude information simply disappeared.
"What's going on?" The supervisor was stunned. Why was the altitude information gone? He immediately called his assistant to ask what the reason was.
Less than two minutes later, the assistant came back and said awkwardly, "They said that due to the limitations of radar performance and some terrain factors, the detection capability is limited at low altitudes. This kind of altitude loss is... normal."
"Normal?" The supervisor was so angry that he laughed. If Xu Cang hadn't said that, he might not have felt anything. After all, due to the influence of the earth's curvature and terrain obstacles, many radars are indeed not effective in low-altitude detection. However, with Xu Cang's words, it was just like his own face.
However, before the supervisor could get angry, Xu Cang's slow left turn to cut into the localizer was immediately reflected on the radar screen in the regional control room. The supervisor noticed it immediately and did not bother to talk about the problem of radar low-altitude detection. He directly grabbed the microphone of the control room and said, "ANA45, have you intercepted the course?"
"Course intercepted, ANA45."
"ANA45, contact Yokohama Tower 118.45, goodbye and good luck." The supervisor let out a long sigh.
Since the civil control radar had poor information detection capabilities for ANA45, the area control directly took over the approach control job, guiding Xu Cang directly to Runway 27 of Yokohama Airport, and then directly handed over to the tower control.
Xu Cang switched the radio frequency to the Yokohama tower frequency: "Yokohama Tower, ANA45, altitude 3,000 feet, channel 27."
"ANA45, ground wind 280/03, visibility greater than ten kilometers, runway 27 is clear for landing. Police and medical personnel are in place. After landing, occupy the runway and shut down the car on the spot. People in the cabin should not get off the plane yet." The tower must have received the message and told all the arrangements after landing at once.
In a situation like this, they definitely cannot get off the plane first. Special personnel such as police need to board the plane first to completely control the criminals and escort them off the plane. Only then can ordinary passengers be organized to get off the plane.
Xu Cang naturally knew this process clearly, and sometimes he would encounter it during emergency drills.
"Roger that, runway 27 is clear for landing."
Hearing the ground wind given by the tower, Xu Cang couldn't help but feel overjoyed. This was basically a headwind, and the speed indicator could be calculated immediately.
Since the aircraft cuts into the glide path from a low altitude, after intercepting the localizer, it needs to fly level for a while before intercepting the glide path. In order to land as soon as possible, Xu Cang has been delaying the release of flaps. Now, during the time of level flight and cutting into the glide path, he can just slow down and release the flaps.
Without thinking, he simply reduced the throttle and held the plane. He calculated the speed and found it was within the limit, so he put it to flap one.
The deceleration in slow and level flight is quite fast. Basically, the speed can be seen wherever the flaps are placed. Especially with the landing gear placed at the back, the deceleration is even faster. There is no need to worry about not being able to slow down.
Almost at the same time as the landing configuration was established, the aircraft intercepted the glide path. According to previous expectations, Xu Cang used flaps 40 for landing, with a very low speed of only more than 130 knots.
As soon as the glide path was intercepted, Xu Cang immediately pushed the slow throttle to 52, then slightly pushed the stick to reduce the attitude in order to follow the glide path.
At the moment of interception on the glideslope, an OM logo flashed in the upper left corner of the PFD, which meant that the aircraft passed the external beacon. As soon as this logo appeared, Xu Cang immediately pressed the clock on the plane.
That’s right, Xu Cang just wanted to verify whether there was any problem with the ground speed.
On Runway 27 at Yokohama Airport, the distance between the inner beacon and the outer beacon is seven nautical miles, which is marked on the blind landing map. When the aircraft flies over the outer beacon, there will be an OM indication, and when it flies over the inner beacon, there will be an IM indication. In this way, Xu Cang only needs to time the time between the outer beacon and the inner beacon, and knowing that the distance between the two beacons is seven nautical miles, then he can get the average speed of the aircraft between the two beacons.
After doing mental arithmetic, compare this average speed with the ground speed. If they are roughly the same, then there is no problem with the ground speed.
If the difference is too big, then Xu Cang will have to consider some relatively obscure methods of implementation.
Just after Xu Cang counted the time, a beeping sound suddenly came from outside the door. This sound did not come from the cockpit, but from the cockpit door. In this era, many people may not understand this sound, but Xu Cang knows it clearly.
This is the sound of the door locking system parsing the password and automatically unlocking the cockpit door after the password is entered from the outside.
"Do you know the cockpit password?" Xu Cang's first thought was whether the captain had asked or remembered the cockpit password.
He glanced at Kuroda Takashi again. Seeing that the distance was only five nautical miles, Xu Cang hesitated and pressed the cabin call button. He still kept some energy to keep the plane on the standard glide path: "Do you know the password?"
"Yes, the flight attendant is awake." After waiting for a while, the captain's voice sounded: "It seems that this door will take a while. I will come in when it opens."
Outside the door, just as Xu Cang expected, it was the captain who entered the cockpit entry and exit code.
After a lot of trouble, the captain finally got the password to enter and exit the cockpit from the weak chief steward. He didn't think much about it and just wanted to open the door to help Xu Cang. But his movements were a little slow, and he was about to land.
"After entering the password, the electronic lock will require a moment's wait." At other times, Xu Cang would have let the captain in very easily, but now that they were very close to landing, it was still a little dangerous for the captain to come in without being secured.
After thinking for a while, Xu Cang said, "Okay, come in when you open the door. However, the plane is about to land, so be careful when you come in."
"I understand!" the captain responded immediately.
There was only a minute left before landing. At this moment, the altitude was already very low and the speed was also reduced to the minimum. The airflow on the final leg of Yokohama Airport was very stable, and Xu Cang didn't even need to make too many manipulations to maintain the standard localizer and glide path.
Xu Cang raised his head slightly and tried to look outside. The airflow was still fierce, but it was far less than that at high altitude. He opened his eyes slightly, felt a little, and then quickly lowered his head again.
Well enough!
Xu Cang estimated that he would be below fifty feet in a moment, and after entering the airspace above the runway, he would still be able to keep visual contact with the outside world.
Soon, after seeing the IM instructions, Xu Cang silently glanced at the time on the clock, and then calculated the average speed in his mind, which was almost the same as the ground speed. This undoubtedly proved that the ground speed display was correct, and he could use it boldly after landing.
At this moment, the plane was only a few hundred feet high. Xu Cang felt his cold body, and his heart was burning with heat.
Coming down from an altitude of 10,000 meters, Xu Cang suffered from lack of oxygen and cold, and was close to hypothermia. However, he was finally able to land safely.
Fifty feet high!
Xu Cang's control was so precise that he could follow the blind landing instructions accurately and quickly even at an ultra-low altitude of fifty feet.
At this moment, there was a click, which was the clear sound of the mechanism unlocking. After so much trouble, the electronic lock finally opened from the outside, but it took a little too long, and it happened to be when the plane was about to level off, so the timing was not very good.
"Hold on, the plane is about to land." Xu Cang gave the order, and did not even turn back to look at the people. He had already focused his eyes on the outside. He felt that the plane had enough energy, so he reduced the throttle a little. The moment he was about to level out, a sinister voice suddenly rang in his ears: "Too slow!"
When this ghostly voice sounded, Xu Cang's hair stood on end, and he turned his head to the left. He saw that the unconscious Kuroda Takashi had woken up, holding a sharp knife in his hand, and stabbed at Xu Cang with a grin.
At this moment, the plane was close to landing. Caught off guard, Xu Cang raised his hand to block it almost instinctively. However, his body had no way of blocking the sharp blade, and the sharp knife went straight through Xu Cang's palm.
The severe pain from his palm almost made Xu Cang lose his sanity. Even Xu Cang lost control of the plane at this moment.
Since Xu Cang was leveling with his right hand, he was in great pain and could not accurately give the leveling amount, but just instinctively pulled back. However, this kind of unthinking leveling is a big problem, because during the leveling period, due to inertia, the right hand will unconsciously press the plate to the right, causing the aircraft to form a right bank.
Even though Xu Cang pulled the tire flat, the amount of pulling was very small, and the landing posture of the aircraft did not appear at all, and it sank very quickly. Because of the right slope, the right wheel of the aircraft touched the ground first. However, due to the excessive ground load caused by the rapid sinking, the right wheel of the aircraft burst directly at the moment of touching the ground.
However, due to the heavy landing, although the right tire burst, the plane still bounced up.
The plane bounced so high this time that if it touched down a second time, it would surely be smashed to pieces.
At this critical moment, Xu Cang roared, like a dying beast bursting out with a strong desire to survive. The five fingers of his left hand that was pierced by the sharp blade directly wrapped around Kuroda Takashi's right hand, pulled it down, and then pushed hard, pushing both thrust handles directly to the front.
With a roar, the two CFM56 engines burst out with powerful thrust again. With a wave of Xu Cang's right hand, the plane soared into the sky again at a great angle of pitch.
As the plane suddenly rose to a high pitch, Kuroda Takashi unexpectedly let go of the knife handle. Seeing this, Xu Cang retracted his left hand, and instantly turned the main electric trim to full back with his right hand, then let go of the steering wheel and pulled out the sharp knife that had pierced his left hand with his backhand.
In an instant, a large amount of blood spurted out of Xu Cang's left hand, but Xu Cang didn't care about it. He directly switched the knife from his right hand to his left hand, and just grasped the handle of the knife. The severe pain from the wound on his palm almost made Xu Cang faint.
But it was the severe pain that aroused Xu Cang's ferocity. This time, he did not stop, holding the knife in his left hand, stabbed down, and directly inserted the sharp knife into Kuroda Takashi's right shoulder blade.
In an instant, the entire cockpit was filled with Kuroda Takashi's almost crazy roar!