Chapter 449? One Operation Is as Fierce as a Tiger

Chapter 449: One operation is as fierce as a tiger

Many people thought that a damaged aircraft that had made an emergency landing could not take off normally. However, when they realized that B-25277 was very likely to still have normal flight capabilities, they realized that they had fallen into the trap of inertia of thinking.

After rigorous analysis. The joint military-civilian investigation team believes that option three is extremely feasible. They quickly transported new engines to replace the two damaged engines. They used multiple cranes to lift the aircraft up and then checked the landing gear system. They found that there was no serious damage to the front and rear landing gear due to the protection of the belly of the aircraft.

For safety reasons, they still replaced the entire landing gear system. This is nothing compared to the loss of an airplane, and is especially welcomed by insurance companies, who will save millions of dollars in compensation.

For airlines, it is far more economical to return the aircraft to normal operation as soon as possible than to purchase a new aircraft. Therefore, they do not really hope to receive compensation for the entire aircraft. Instead, they hope to return the aircraft to normal operation in the shortest possible time. Y-8F-400 No. B-25277 was repaired and put into operation again.

For the troops, driving the plane away is the fastest way to clear the runway.

Therefore, option three is undoubtedly a win-win solution accepted by all parties.

The civil aviation industry repair organization quickly started the engine replacement work according to the requirements of both airlines and insurance companies and under the guidance of the Civil Aviation Administration of China. After completion, a ground test was conducted with the assistance of the military maintenance team to ensure that the entire power system was completely normal. During this period, the army's maintenance personnel also assisted in repairing the belly and slightly damaged wings to ensure that the aircraft could obtain sufficient lift normally when taxiing.

After all these preparations were completed, it was already the last day of 2011. It was on this day that the representatives dispatched by China Post and Airlines to the joint investigation team formally proposed to the army that they hoped that experienced pilots from the army would fly B-25277 directly back to the factory. .

This task fell to Li Zhan and Liu Changxi, who was still training at the Xixian Field Station.

After the West Pacific voyage training, Liu Changxi and his crew returned from Dongfang City to the Xixian field station to continue their training mission. Only then did Li Zhan learn that Liu Changxi had more than 3,000 hours of flying experience on the Y-8 series aircraft.

Two mechanical engineers sent by the manufacturer were randomly assigned.

Despite this, Li Zhan and Liu Changxi still face a very challenging task. After reducing the weight as much as possible, the B-25277 aircraft was loaded with enough fuel to fly directly to the 012 Aircraft Factory in China, and the take-off weight still reached 40 tons.

After repeated calculations, the result was that the aircraft would not be able to take off smoothly using the 1,200-meter-long runway at Zhongnan Station. It would still need at least 300 meters of taxiing distance, and the aircraft had no way to reduce its weight.

When they had to consider reducing the fuel load and refilling the fuel during the stop, Li Zhan and Liu Changxi thought after careful analysis that flying directly to the 012 aircraft factory in one takeoff could avoid other unexpected situations, such as take-off and landing meetings at the stop. Some unpredictable mechanical failures occurred, which was particularly important for an aircraft that had not been fully repaired after an emergency landing. However, they were confident that the 40-ton aircraft could successfully lift off on the 1,200-meter runway. null.

But there is a prerequisite - the tourist airport must be shut down for two hours, which will cause serious delays of five to seven flights.

Li Zhan and Liu Changxi's confidence came from the weather forecast on New Year's Day. There was a very good and stable southeasterly wind. Taking off from north to south could gain more lift than before, but the aircraft had to continue to climb and cross the route of the tourist airport. And made a 180-degree turn over the tourist airport and flew towards the 012 aircraft factory located two thousand kilometers to the north.

The army approved their plan, and the Civil Aviation Administration was responsible for coordinating the tourist airport to free up window time. The tourist airport would once again suspend operations for two hours due to "air force activities on the side."

On the first day of 2012, people across the country were celebrating. At 8:00 a.m., a temporary crew composed of Li Zhan, Liu Changxi and two mechanical engineers from the manufacturer boarded the plane, and Li Zhan took the captain's seat. One of the important reasons why the flight controller approved the flight plan of their temporary crew was because Li Zhan had an unparalleled understanding and unimaginable familiarity with this aircraft, and the leaders were very reassured.

Li Zhan skillfully conducted pre-takeoff inspections, strictly following the requirements and confirming the progress and results of each inspection item with co-pilot Liu Changxi.

"Hydraulic pressure is normal."

"Flaps OK."

"Rudder, normal."

"The power system is normal."

"Departure radio frequency 173.9, confirmed."

A series of pre-takeoff inspections were completed, and the B-25277 Yun-8F-400, which was already on standby at the northernmost end of the runway, was ready to take off. In order to obtain the maximum rolling distance, the tires of the rear landing gear were almost attached to the edge of the northern end of the runway. Sometimes, maybe a few dozen centimeters of running distance can affect the overall situation.

Li Zhan called the tower, "Tower, the preparations are complete before taking off in two-five-two turns. You can take off at any time. Over."

The calling method is very different from that used in the civil aviation system, and the expression and content are different.

"Stand by in twos and fives, wait for weather permission, over." The commander in the tower was Tang Guozheng, and most of his attention was on the weatherman.

The aircraft has to wait for the maximum wind force to appear before taking off. This will make it more reliable to take off smoothly from a runway that is not long enough.

Today's weather is very good, and clear skies are another obvious feature of winter in the central and southern regions. It is completely different from the accident day a month ago when rain and snow intersected. But the ground temperature is not high, always between two and five degrees Celsius. It will rise a little at noon, but it is still cold.

In this case, there is no need to activate the de-icing system, so all the power of the four engines can be used to generate thrust. At this time, the weather will not change suddenly in a short period of time, which can be easily judged through visual observation.

After the weatherman loudly reported and gave a thumbs up, Tang Guozheng quickly gave the takeoff order to B-25277 Yun-8F-400.

"You can take off in two, five, two, repeat, you can take off, over!"

Li Zhan and Liu Changxi stepped on the brakes at the same time, then pushed the accelerator lever all the way, "Two or five, turn around, get it, take 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 aircraft began to roll forward.

"Fifty!"

"eighty!"

Liu Changxi reported the latest sliding speed according to regulations.

"One hundred ten!"

"One hundred and three!"

Immediately reaching the so-called V1 speed.

The series of operations are extremely smooth and hearty, and you can quickly reach the take-off speed.

However, at the beginning of this critical moment, Li Zhan suddenly shouted: "Cancel takeoff! Repeat, cancel takeoff!"

While shouting, he took the corresponding emergency action to cancel the takeoff. The throttle lever quickly pulled back the flaps to the deceleration position and stepped on the landing gear tire brakes. Just three seconds before reaching the irreversible takeoff node, Li Zhan took off in the shortest time. The emergency takeoff cancellation operation was completed within 12 seconds.

The plane "squeaked" and slowly stopped at the end of the runway.

"What's going on?" Liu Changxi asked, heartbroken.

Li Zhan raised his chin, "Look."

Liu Changxi raised his head and looked in the direction of the nose of the plane. He broke into a cold sweat when he saw it, because what he saw was a series of birds flying in front, one after another, just across the plane's takeoff route. Pass through.

"How come there are birds? Where do they come from?" Liu Changxi wished he could wipe his hands with cold sweat.

If there was no emergency abort of the takeoff procedure, the plane would have had close contact with the birds after climbing off the ground, and with the thousand-foot-deep valley below, it would have been impossible to die without a burial place.

Li Zhan said, "There are many wild birds in the virgin forest around, and they are basically national-level protected animals. I didn't land here just because I hit a bird some time ago. This is no joke at all."

He immediately reported the situation to the control tower, and Tang Guozheng and several leaders from the Civil Aviation Administration, airline companies, and insurance companies were also frightened into cold sweats. If the captain's sharp eyes hadn't seen the large group of birds breaking through, a bird collision accident might have been unavoidable. There are no birds hidden in the green mountain background here at the tower, and the bird repellent facilities here cannot absolutely guarantee that this station located deep in the forest will not be threatened by birds.

The tractor towed the aircraft back to the take-off position, and the bird-repelling team was dispatched urgently. All officers and soldiers of the field service company were also dispatched to carry out emergency bird-repelling operations.

The leader of the airline company was a pilot. After he saw the plane stop steadily less than a hundred meters from the end of the runway, he felt relieved and couldn't help but said to Tang Guozheng, "Chief of Staff Tang, it's a shame." It was a pilot from the army who was driving the plane. The pilot from our airline company might not be able to stop the plane safely. Captain Li's actions were very decisive and quick."

An expert can tell the difference, and besides, he is an old military-to-civilian pilot who has flown Yun-8.

Tang Guozheng was frightened for a while, but on the surface he was calm and calm, saying, "Comrade Li Zhan's level represents the level of our army. Of course, there is still room for improvement. But Comrade Li Zhan is indeed very familiar with the Y-8 aircraft. .”

"It should have almost reached V1 just now." said a director of the Civil Aviation Administration of China.

Tang Guozheng said, "It's three seconds away."

Three seconds later, the plane would have veered off the runway and plunged down the mountain.

Everyone gasped and became frightened, and they immediately paid attention to the problem of the birds. This issue obviously did not receive the attention it deserved before. Everyone's attention was focused on the relationship between the length of the runway and the shortest taxiing distance for aircraft takeoff.

It's obvious that flocks of birds are a huge threat to flight safety.

"Chief of Staff Tang, the army should have a way to clean up the birds around the runway in a short time, right?" asked the director of the Civil Aviation Administration of China.

Tang Guozheng said confidently, "It can happen."

He immediately gave an order to the staff around him, "Send a squad over with guns and live ammunition!"

People from the Civil Aviation Administration of China and the insurance company looked at each other. Are they trying to kill a bird? The airline leader, who was an Air Force transport pilot, thoughtfully understood what Tang Guozheng was going to do.