Many people believe that an emergency landing damaged aircraft cannot take off normally, and when they realize that the b-25277 is most likely to still have normal flight capabilities, they realize that they are trapped in the trap of thinking inertia.
After rigorous analysis, the joint military and local investigation team believed that the three poles were operable. They quickly transported a new engine to replace the two damaged engines, used multiple cranes to lift the aircraft up and checked the landing gear.
The system found that the front and rear landing gears were not seriously damaged due to the protection of the belly.
For foolproof reasons, they still replaced the entire landing gear system. This is nothing compared to losing an aircraft. Insurance companies are especially welcome to this, and they will save millions of dollars in compensation.
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For airlines, it is much more economical to get the aircraft to resume normal operations as soon as possible than to re-purchase an aircraft. Therefore, they do not really want to get compensation for the entire aircraft, but instead hope to be able to make the aircraft in the shortest time.
The Yun-8f-400 No. b-25277 has been repaired and put into operation again.
For the troops, driving the plane directly away is the fastest way to complete the runway cleaning.
Therefore, Plan 3 is undoubtedly a win-win plan accepted by all parties.
According to the requirements of the airline and insurance company, the civil aviation industry repair agency quickly launched the engine replacement work under the guidance of the State Administration of Civil Aviation. After completion, the ground interview was conducted with the assistance of the military's maneuver to ensure that the entire power system was completely normal. During this period, the troops
The crew also assisted in repairing the belly and slightly damaged wings to ensure that the aircraft can obtain sufficient lift normally while skiing.
All these preparations were completed, the last day of 2011. On this day, the representatives sent by Postal Airlines in the joint investigation team formally expressed to the army that the experienced pilots of the troops would fly the b-25277 aircraft directly back to the factory.
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This task fell on Li Zhan and Liu Changxi, who was still in training at the Xixian Station.
After the training of the West Pacific voyage, Liu Changxi and his crew returned from Dongfang City to Xixian Station to continue their training mission. At this time, Li Zhan learned that Liu Changxi had more than 3,000 hours of flight experience of the Y-8 series aircraft.
Two mechanical engineers sent by the manufacturer were randomly sent.
Despite this, Li Zhan and Liu Changxi are still facing a challenging task. After reducing the weight as much as possible, the b-25277 aircraft was loaded with fuel that could reach the 012 aircraft factory directly in Zhonghan.
The take-off weight still reached forty tons.
After repeated calculations, the result was that the aircraft could not take off smoothly using the 1,200-meter long runway of Zhongnan Station, and it still required at least 300 meters of skiing distance, and the aircraft could no longer lose weight.
When it was necessary to consider reducing the fuel and refueling it when the air stop was stopped, Li Zhan and Liu Changxi believed that taking off directly to the 012 aircraft factory could avoid other unexpected situations, such as taking off and landing at the air stop station.
Some unpredictable mechanical failures that occurred were particularly important for an aircraft that had not been completely repaired after a crash landing, and they were sure to lift the 40-ton aircraft on the 1,200-meter runway.
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But there is a prerequisite - the tourist airport must stop operating for two hours, which will cause serious delays for five to seven flights.
Li Zhan and Liu Changxi's grasp comes from the weather forecast on New Year's Day. There is a very good and stable southeast wind. Taking off from north to south can get more lift than before, but the plane must continue to climb across the side of the tourist airport.
And turn 180 degrees above the tourist airport and fly to the 012 aircraft factory, which is located two thousand kilometers north of the north.
The troops approved their plan, and the Civil Aviation Administration is responsible for coordinating the tourist airport to free up windows. The tourist airport will once again be suspended for two hours due to "there are air force activities on the side".
On the first day of 2012, people across the country were having fun. At 8 a.m., a temporary crew composed of Li Zhan, Liu Changxi and two mechanical engineers from the manufacturer boarded the plane. Li Zhan sat in the captain's position. The airline approved them.
One of the important reasons for the flight plan of this temporary crew is that Li Zhan has an unparalleled understanding of the aircraft and is familiar with it beyond imagination, and the leaders are very relieved.
Li Zhan skillfully conducted pre-take-off inspections, strictly confirming the progress and results of each inspection project with co-pilot Liu Changxi in accordance with the requirements.
“The hydraulic pressure is normal.”
“The flaps are normal.”
"Ruler, normal."
"The power system is normal."
"Out-field radio frequency 173.9, confirm."
A series of pre-take-off inspections have been completed. The Y-8f-400, which is already on standby at the northernmost end of the runway, is ready to go. In order to obtain the most sliding distance, the tires of the rear landing gear are almost stuck to the edge of the northern end of the runway.
Sometimes, a sliding distance of several tens of centimeters can affect the overall situation.
Li Zhan called the tower, "The tower, two or five liang bends before taking off, and you can take off at any time, and you will be finished."
There is a big difference between the calling method and the civil aviation system, and the expression method and content are different.
"Two five liang will be on standby, wait for the weather permit, and it will be completed." Tang Guozheng was commanding in the tower, and most of his attention was on the meteorologist.
The plane has to wait for the maximum wind force to take off, so that it is more certain to take off smoothly from a runway that is not long enough.
The weather is very good today, and the clear sky is another obvious feature of the winter in Central and Southern regions. It is completely different from the accident day when rain and snow intersected a month ago. However, the ground temperature is not high, and it always remains between two degrees Celsius and five degrees Celsius.
It will rise a little by noon, but it is still cold.
In this case, there is no need to start the deicing system, so the power of the four engines can be used to make thrust. At this time, the weather will not change suddenly in a short period of time, which is a pain and loss.
Just observe and make judgments easily.
After the meteorologist loudly reported Shu Qi's thumbs up, Tang Guozheng quickly issued a takeoff order to the b-25277 Yun-8f-400.
"Two or five ounces can take off, repeat, you can take off, it's over!"
Li Zhan and Liu Changxi stepped on the brakes to death at the same time, and then pushed the accelerator lever to the bottom, "I received the two or five ounces and took off!"
After the thrust generated by the engine exceeded the braking force, Li Zhan and Liu Changxi released the brakes at the same time and the plane began to slide forward.
"Fifty!"
"eighty!"
Liu Changxi reported the latest sliding speed according to regulations.
"One hundred and one!"
"One Hundred Three!"
It's about to reach the so-called v1 speed.
The series of operations are extremely smooth and refreshing, and the take-off speed can be reached soon.
However, at the beginning of this critical moment, Li Zhan suddenly shouted: "Cancel takeoff! Repeat, cancel takeoff!"
While shouting, he took the corresponding emergency cancellation of the takeoff action. The accelerator rod quickly returned to the flap and slowed down the landing gear tire brake. Just three seconds before reaching the irreversible takeoff node, Li Zhan was in the shortest time
The emergency cancellation of the takeoff operation was completed within.
The plane slowly stopped at the end of the runway with a squeaking squeaking squeaking squeaking squeaking squeaking squeaking squeaking squeaking squeaking squeaking squeaking squeaking squeaking squeaking squeaking squeaking squeaking squeaking squeaking squeaking squeaking squeaking squeaking squeaking squeaking squeaking squeaking squeaking squeaking squeaking squeaking squeaking squeaking squeaking squeaking squeaking squeaking squeaking squeaking squeaking squeaking squeaking squeaking squeaking squeaking squeaking squeaking s
"What's going on?" Liu Changxi asked with a heart down.
Li Zhan raised his chin, "Look."
Liu Changxi looked up in the direction of the aircraft head. He was scared to death when he saw a series of birds flying past, group after group, just crossing the flight route of the plane.
Pass through.
"How come there are birds? Where did they come out?" Liu Changxi could not help but sweat.
If the takeoff procedure is not urgently terminated, the plane will definitely have close contact with the birds after climbing off the ground. Below is the bottom of the valley, which will really lead to death without a burial place.
Li Zhan said, "There are many wild birds around the primeval forest, and they are basically national-level protected animals. Didn't I just hit birds and land here? This is not a joke."
He immediately reported the situation to the tower. Tang Guozheng and several leaders of the Civil Aviation Administration, the airline and the insurance company were also scared and sweated. If the captain had not seen a large group of birds coming through with sharp eyes, they might have had a bird crash accident.
It is inevitable. The birds hidden in the background of green forests cannot be found on the tower, and the bird repelling facilities in this site cannot absolutely guarantee that this station located deep in the forest will not be threatened by birds.
The tractor dragged the plane back to the takeoff position, and the bird-driving team was dispatched urgently, and all the officers and soldiers of the field company were dispatched to carry out emergency bird-driving operations.
The airline leader was a pilot. After seeing the plane stopping steadily less than a hundred meters from the end of the runway, he couldn't help but say to Tang Guozheng, "Chief of Staff, you're in trouble."
It was the pilot of the army who came to drive, and the planes on our airline might not be able to stop safely. Captain Li's movements were very decisive and quick."
The expert has seen the trick, and he is also an old military-to-civilian pilot who has driven the Y-8.
Tang Guozheng felt scared, but on the surface he was calm and gentle, saying, "Comrade Li Zhan's level represents the level of our army. Of course, there is still room for progress. However, Comrade Li Zhan is indeed very familiar with the Yun-8 aircraft.
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"It should have been almost v1 just now," said a director of the Civil Aviation Administration.
Tang Guozheng said, "Three seconds apart."
The plane will rush out of the runway and plunge into the mountain after three seconds.
Everyone was so scared that they immediately attracted attention to the problem of the bird flock. This issue obviously did not receive the attention it deserved before, and everyone's attention was focused on the length of the runway and the shortest skiing distance of the aircraft taking off.
on the relationship between the two.
It is obvious that the bird flock is a huge threat to flight safety.
"Chief of Staff Tang, the troops should have a way to clear the birds around the runway in a short time, right?" asked the director of the Civil Aviation Administration.
Tang Guozheng said confidently, "It can be."
He immediately issued an order to the staff around him, "Send a squad with guns and live ammunition!"
The people from the Civil Aviation Administration and the Insurance Company looked at each other, saying that they were going to kill birds? The airline leader, who was a pilot of the Air Force transport plane, understood what Tang Guo was about to do.