Yao Yuan really couldn't remember. In November last year, four months before the Beihang MD-82 crashed when landing in Urumqi, there was another air crash.
On July 23, 1993, a Northwest Airlines bae146-300 medium-sized passenger plane operating flight b-2119 from Yinchuan to Beijing fell into the swamp in front of the runway two minutes after takeoff. There were 113 people on board, 55 of whom were killed.
This is the Yinchuan air crash.
Yao Yuan was abroad at that time. After returning to China, there was very little news about the Yinchuan air crash in the newspapers. He only saw some simple follow-up reports in the newspapers.
When he received another call from Xia Honghua asking him to rush to Chang'an as soon as possible for a reunion, he regretted it because he remembered another more serious air disaster - the Chang'an air crash.
June 6th is today!
The plane crash happened around 8 a.m.!
A Northwest Airlines Tu-154 passenger plane disintegrated in the air 10 minutes after taking off from Chang'an Airport, killing all 160 people on board.
This is the plane crash with the largest number of fatalities in the history of Chinese civil aviation so far.
"I should have thought of it a long time ago! How could I forget it!" On the special plane, Yao Yuan kept repeating the same words and patting himself on the head, which made He Shirley confused and distressed.
He Xueli said, "Don't be like this, it has nothing to do with you. The report we submitted to the Civil Aviation Administration of China highlighted some confusions in the current airline management, especially in the area of technical support. The Civil Aviation Administration also issued a document, and Northwest Airlines did not
It’s their problem to attract attention.”
"One hundred and sixty lives!" Yao Yuan held his head in pain.
Even if he had thought of it one day earlier, this plane crash would not have happened because he would have stopped it at all costs.
It's too late to say anything now.
After the special plane landed at Chang'an Airport, Yao Yuan came out of his deep self-blame.
Xia Honghua invited him over at this time, obviously not just to discuss the issue of Northwest Airlines. He was prepared for everything. More than 30 experts from the Chunfeng Academy of Science arrived on the same plane, including aviation experts, communication experts, aerodynamics experts...
Most of them were hired from Russia and Ukraine, and many were from the former Soviet Aircraft Design Institute. Some even participated in the development of the Tu-154 passenger aircraft.
These are the most urgently needed technical capabilities for the accident investigation team.
Xia Honghua strode forward to greet him, held Yao Yuan's hand and said, "You said you are a firefighter, but I think I am more like a firefighter."
In less than three months, Xia Honghua has become much more haggard. It seems that she has been very busy and stressed during this period.
Yao Yuan said, "Accident investigation is the responsibility of the safety supervisor, you don't have to work so hard."
"But the management of state-owned enterprises is my business." Xia Honghua looked solemn, "Let me introduce the foreign guests."
Yao Yuan corrected, "They are employees of Chunfeng Academy of Science, not foreign guests. Don't act like I am here to entertain foreign guests, making it seem like we Chinese are inferior to foreigners."
"I understand, don't worry." Xia Honghua knew Yao Yuan's character. He was most disgusted with worshiping foreigners.
Yao Yuan called Zhan Chenggui over, "Zhan Chenggui, the first vice president and chief engineer of Chunfeng Academy of Sciences, please introduce him to you."
He personally serves as the president of Chunfeng Academy of Sciences, and Zhan Chenggui is in charge of specific affairs.
Xia Honghua didn't find it strange that Zhan Chenggui was young. His boss was even younger.
After shaking hands with more than 30 experts one by one, Xia Honghua felt much better. Especially after learning that several of them had participated in the development of the Tu-154 passenger aircraft, she felt that this was the only good news since the accident.
"Lao Xia, don't waste time here, go to the scene." Yao Yuan said in a deep voice.
Xia Honghua said, "Let's take a rest first."
"If you're not in that mood, go directly to the scene. The people I bring can get to work at any time." Yao Yuan shook his head and said.
Xia Honghua no longer forced himself, and the group of people took a car and sped away to the crash site.
In fact, there was more than one so-called scene, because the plane disintegrated in the air, and the main debris was scattered over an area of about two kilometers long and one kilometer wide, running from northwest to southeast.
"The search and rescue work is still ongoing. Many wreckage has not been found yet. The local garrison and militia have been mobilized. There should be news soon." Xia Honghua said.
Zhan Chenggui and the experts were sitting in the minibus at the back. He called and suggested that he first go to see the wreckage of the cockpit.
Just in time, Xia Honghua received a report that the wreckage of the cockpit had been found.
Yao Yuan frowned and thought, and relevant memories slowly emerged. He couldn't remember the details of other aviation accidents, but he couldn't help but be deeply impressed by the Chang'an air crash, which had the largest number of victims.
This is why he blames himself deeply.
He said solemnly, "Human factors cannot be ruled out, especially in the field of ground technical support. You should organize a team to investigate the technical support personnel on duty, electrical engineers, mechanics, shift supervisors, etc."
Xia Honghua was stunned for a moment, but still picked up the phone and made a call.
He is not in charge of the accident investigation team, but his opinions can attract the attention of the accident investigation team.
The wreckage of the cockpit was found on the bank of a river. Fortunately, the instrument panel was relatively intact, which is helpful for the accident investigation.
Unfortunately, none of the crew members in the cockpit survived.
Experts from the Chunfeng Academy of Science immediately joined the on-site investigation team and immediately recorded and analyzed the data reflected on the instrument panel. Among them, several experts who had participated in the development of the Tu-154 had high hopes.
He Shirley vomited several times, but still endured the discomfort and stayed at the scene with Yao Yuan. Lin Wei showed strong psychological quality and helped several experts with calculation work, which showed his strong mathematical ability.
Xia Honghua did not expect that people like Yao Yuan were so professional, and even Yao Yuan himself inspected the discovered wreckage. Only then did he remember that Yao Yuan was a talented student at Western Polytechnic University. Although he had not graduated yet, he had already completed such advanced work as the overall design of a heavy-duty chassis.
Research project.
Yao Yuan is not just showing off, but really using what he has learned to help with the investigation.
He saw a materials science expert from the Civil Aviation Administration holding a piece of metal with tweezers and examining it. He looked closer and then at the fragments scattered on the ground and said, "Metal fatigue caused by overload, judging from the shape, it should be
The skin of the middle section of the fuselage.”
Seeing that Yao Yuan was so young, the materials science expert thought he was an assistant to some expert, so he said, "Further testing is needed before we can draw a conclusion."
Yao Yuan squatted down and pieced together several pieces of the wreckage. It turned out to be a relatively complete piece. He thought about it and said, "You can vaguely see the hook of the company's company name. The words China Northwest Airlines are from the aircraft."
The ones arranged with their heads towards the middle of the fuselage can be determined to be part of the fuselage skin above the middle section of the fuselage. Let’s take a picture and fix it.”
The assistant holding the camera quickly took pictures.
The materials science expert admired it and said with surprise, "Yes, yes, it is indeed the skin above the middle part of the body. Young man, you have good eyesight."
Yao Yuan expressed his judgment, "The fragments are irregular, there are no traces of burning, and the edges are bent outward. This is a typical tear caused by large overload."
The materials science expert looked at it carefully and gave Yao Yuan a thumbs up.