"Coriolis hallucination. After the lymph in the semicircular canal of the human ear reaches equilibrium after experiencing a long-term acceleration state, it causes the human brain to have the illusion of 'not accelerating'. At this time, once it is affected by external forces and changes the state of the lymph, it may cause Coriolis hallucination." Zhuo Huan said, "Because we want to avoid cyclones, the two pilots chose to lower the altitude. At this time, they are in an accelerated decline process. The sudden and strong crosswind caused them to be violently impacted and their bodies shaking..."

He looked at all the investigators: "So, Coriolis hallucinations arise."

Joseph Lao continued: "The evidence is obvious. First, judging from the flight data chart, the driving process of American Airlines 4012 is fully in line with the conditions for the generation of Coriolis hallucinations. Second, the deputy captain Tim said in the recording that he felt dizzy. This is also one of the manifestations of Coriolis hallucinations. In addition..." Joseph Lao looked at Su Fei, and Su Fei immediately understood and retrieved the last flight data of the plane and projected it on the large screen.

Joseph Older: "This plane rushed into the sea almost at its maximum acceleration. The most direct manifestation of Coriolis' hallucination - the pilots will feel that they are rotating or accelerating on completely different axes. To change this state, they will fly the plane wrongly, making the plane accelerate faster."

Old Joseph quietly looked at the last paragraph on the screen.

After a long time, he continued: "Kyle Schulman is indeed an extremely excellent pilot. After he was already in the hallucination of Coriolis, he realized that his condition was wrong in just one minute. After realizing this problem, he was able to make the right choice in a miraculous way and try to save the plane. Unfortunately, there were only a few seconds left."

"What a pity. If the altitude of this plane was not 9,000 feet at that time, it was not only 3,000 meters short. As long as it was 2,000 meters higher, even if it was 1,000 meters, he would have the chance to rescue the plane and rescue these 298 people..."

"Including himself."

***

The black box has been found, and there is no doubt that the truth is in front of everyone, and the investigation report must be written again.

Zhuo Huan still handed over this task to Old Joseph.

Others helped Old Joseph collect information.

The outside world, the media and public are enthusiastic about the truth about American Airlines 4012, and they are eager to know the answer. Fucheng is responsible for helping Joseph collect information about marine meteorology. After he sent the information by email, it was already two o'clock in the morning.

The NTBS investigation headquarters is still brightly lit.

Old Joseph sat in front of the computer, and the light of the screen reflected in his eyes. He quickly typed words, meticulously. Fucheng brought in a cup of coffee. Old Joseph raised his head and smiled, "I thought it would be Lina. Fu, why did he suddenly come to me if he had time? Oh, by the way, I have received the marine weather information you collected, very comprehensive, thank you."

Fucheng put the coffee on the table, and he looked at the computer screen. "This is equivalent to writing it again."

Joseph Old: "It's not considered a matter of fact. Some things were not wrong in the previous investigation."

Fucheng took a sip of coffee and thought: "At a height of 9,000 feet, they suddenly encountered a strong crosswind of up to 60 knots. If this plane was not Airbus A390, it would be very likely that such a terrifying crosswind would directly lead to a fall from the sea. After finally experiencing the initial crisis for a while, their height was only 7,000 feet. At this time, they were already in the hallucination of Coriolis."

After pausing, Fucheng looked at Old Joseph: "At 7,000 feet, 200 knots, I fell into the hallucination of Coriolis. Old Joseph, can you save this plane?"

It is not just to justify the two pilots, nor is it simply to be curious. Fu Cheng asked this question simply because as a pilot, he has a deep-rooted pursuit of the pilot's flight skills and flying abilities in his heart.

Old Joseph shook his head, holding the coffee cup, and lay on the swivel chair: "I can't do it. Even seventeen years ago, my golden age, I can't do it. I'm just as good as Kyle. I know that I can't do it, either."

Fucheng's voice was calm: "But I just saw that what you wrote about the cause of the accident is that the pilot still has the opportunity to save the plane, and they did not make the most correct choice."

Old Joseph did not answer immediately. He looked at Fucheng and laughed slowly: "Fu, what do you think we are investigating an air crash for?"

Fu Cheng muttered: "Find out the truth and make suggestions to lay the foundation for later generations and never repeat the same mistakes."

"You're right!" said old Joseph, "so I can answer your question again. 7000 feet, 200 knots of airspeed, Coriolis' hallucinations--these three almost dead-like conditions appear at the same time, I can't save the plane, and Kyle can't save it. But is it really a dead end?"

"No! If the pilot could immediately realize that he was in the Coriolis hallucination at the end of five minutes and began to overcome it, he would have five minutes left, five full minutes, to save the plane. Five minutes would be enough for him to lift a plane that accelerated into the sea and fly back into the sky! But they didn't do it."

Old Joseph put the coffee cup on the table and his voice was calm: "Yes, you can't demand it. First of all, the person who drove the plane at the beginning was the deputy captain Tim. His flight skills were not that superb, and he could not meet the requirements I said. It would take some time to transfer the right to the captain to make mistakes. Then, it was too forced to ask the captain to make mistakes for a second, and to impose almost harsh driving requirements on him. He had to be perfect so that he could have a slight chance. How could this be possible?"

"However, this does not mean that we have completely forgiven the pilot for his responsibility in this accident."

"The pilot's fault is one of the reasons why American Airlines 4012 fell into the sea. This is unquestionable."

"Write down the cause of the accident and make suggestions later. I hope that other pilots around the world can pay more attention to Coriolis' hallucinations during training. If someone can think of the tragedy of American Airlines 4012 in the future, know what to do and successfully save the plane. This is the real meaning of our investigation of this accident."

Under the incandescent lamp that was flashing, Fucheng looked at Old Joseph. After a while, the two looked at each other and smiled.

Joseph Old Joseph: "I joined NTSB in 2003, and it has been 18 years since then. Many air crash investigators have been transferred from pilots. I used to be a pilot. After becoming an air crash investigator, I gradually understood a truth. Fu, do you know what it is?"

Fucheng: "What?"

Old Joseph pointed his forehead with his finger: "No one is perfect. Even if you are a pilot, you have the possibility of making mistakes. The pilot's mission is to improve his driving skills and make his flight capabilities more outstanding. What the air crash investigators do, in addition to all non-human factors, are to set up many levels and give all incredible and unimaginable disaster coincidences, so that those excellent pilots curse us while learning to adapt to these hell-level flight copies and submit an excellent answer."

"This is what the existence of air crash investigators is."

Fucheng left Old Joseph's office with a coffee cup.

Halfway through, he suddenly saw a man lying on the sofa at the end of the corridor, covering his face with his coat. It was just a double sofa, about 1.5 meters long. A man lying on it, must not be able to lie completely flat.

Zhuo Huan bent one foot on the ground, and the other foot was raised in the air. His left hand was casually placed on the edge of the sofa, and his pale and thin wrist naturally hanged, outlining high and raised joints. The coat blocked all his expression, and he must have fallen asleep, with his chest slightly undulating.

This corridor was the only way for Fucheng to return to the office. He stood there for a while and walked over calmly.

Just as he was about to turn around the corridor, his pants were gently pulled.

Fucheng turned around and lowered his head.

"Teacher Zhuo, have you not slept?"

I saw that the hand that was originally drooping naturally in accordance with gravity pulled Fucheng's pants and stopped him from leaving.

After a moment, the other hand lifted the coat blocking his face, revealing a cold and indifferent face. Zhuo Huan's face was completely sleepy. He curled the corners of his lips meaningfully, and his slender eyebrows and eyes were filled with displeasure.

Zhuo Huan: "How are you doing in mathematics?"

Fucheng: "..."

"Well enough."

"Oh, then you can settle the bill."

A week ago, a sentence that a man left in his ear coldly at the Logan Airport in Boston was instantly revealed in his mind. Fu Cheng's voice was gentle: "Teacher Zhuo, I'm not a major in accounting, I'm not very good at accounting."

Zhuo Huan smiled: "That's it. But you look like you are very good at cheating."

Fucheng said in surprise: "Is there any? I never owed anyone money." After a pause, he looked at his pants: "Do you have anything to do?"

Can you let go?

Zhuo Huan just didn't let go. He sat upright on the sofa, crossed his legs, and looked up at Fucheng with a smile: "You have your trouser chain open."

Fucheng was unmoved: "I am not a primary school student."

The next moment, his pupils shrank slightly and his whole body was frozen.

Zhuo Huan held his pants and clothes with one hand, and reached towards Fucheng's pants chain at an extremely fast speed, then pulled it away with a tug, and decisively pulled it away. Everything happened very quickly, and Fucheng could not dodge at all.

A successful smile appeared on his face, and Zhuo Huan raised his eyebrows: "Here."

It's open now.

Fu Cheng shook the man's hand hard and pulled his trouser chain up expressionlessly.

Fu Cheng said coldly: "It seems that I am not a primary school student, you are." After that, he turned around and left.

"Hey, Fucheng."

The man's casual voice came from behind, but Fu Cheng didn't want to turn back and pay attention to this person at all.

Zhuo Huan leaned back on the back of the sofa, leaned his head slightly, and his long hair fell to the side due to gravity.

Zhuo Huan said loudly: "Why are you so interested in Roger 318?"

His steps stopped for a moment, and Fucheng did not answer and continued to walk forward. Soon, his figure disappeared at the end of the corridor.

Zhuo Huan watched him leave step by step, then covered his face with his hands, and laughter overflowed from his fingers.

***

Three days later, NTSB held another press conference to announce the results of American Airlines 4012 investigation.

The black box appeared, and the truth finally broke through the layers of sea water from the depths of the vast sea and reappeared in the sun.

In addition to media reporters, many families of victims also arrived at the scene at this press conference. They also wanted to know the truth and wanted their deceased relatives to rest in peace underground.

This time, there was no such verbal controversy at the press conference last month. The truth of the accident was no longer controversial, the main reason was the special marine weather and the bad weather caused the plane to encounter an unimaginable dilemma. The secondary reason was the responsibility of the pilot, and the two pilots fell into the hallucination of Coriolis and flew the plane incorrectly.

Fucheng stood outside the door of the conference hall and did not go in to listen.

However, through a thin door panel, the crying and sad sound still penetrated his ears. The crying was always so heart-wrenching. The distance between life and death was an extreme pain that no one could get out of. Even decades later, even if the edges and corners were smoothed by time, smoothing the joy and laughter of the past. When you recall that person, the world will only have a black and white smile.

The pain penetrates deep into the bone marrow and is indelible.

As the press conference proceeded, slowly, many relatives of the victims could not bear it and left first with tears.

Mrs. Harrison's eyes were red, she wiped the corners of her eyes and walked slowly out of the conference hall door.

"Mrs. Harrison."

She turned her head, looked at the young man in front of her, thought for a while, and remembered: "You are one of the investigators in this accident."

Fucheng walked forward and his voice was soft: "Yes, my name is Fucheng. We have seen him in Boston. Please mourn me."

"Thank you, I really..." After covering my face and crying for a while, Mrs. Harrison reluctantly showed a pale smile, "Tim didn't do it, sorry, I really feel sorry."

Fucheng: "In that case, he has worked very hard. I remember when you were in Boston, Tim once said this to you-"

"I won't make my father's fault again."

“He did.”

Mrs. Harrison stared at Fucheng in a daze, tears bursting out from her eyes. She cried hoarsely, her lips trembled, and her heart was so painful that she couldn't speak.

Fucheng comforted her and personally sent her out of the door.

The warm sunlight passes through the clouds and gently cares for the earth.

It's February, and it's almost spring.

When Mrs. Harrison left, the corridor was filled with bouquets of various kinds. Some were sent by media reporters and from people from all walks of life to comfort the 298 lonely souls under the cold sea. Her eyes suddenly fell on a bouquet of white lilies in the corner.
To be continued...