Chapter 172 Reaper's eyes down! Change fate against the sky(2/3)
After Xu Cang finished the passenger radio, Tan Heling took off his oxygen mask. His first sentence was: "Why did I feel the pole was a little heavy just now?"
Just as Tan Heling finished speaking, the aircraft owner's warning light lit up. Xu Cang looked up and locked it on the hydraulic panel at once. Sure enough, the engine-driven hydraulic pump and the low-pressure light of the electric pump of the AB system were all lit up.
Tan Heling also noticed the faulty light on the hydraulic panel. He was not surprised. He had just found that the hydraulic pressure was dropping rapidly on the lower DU. It was expected that all four hydraulic low-pressure lights were on.
"Do you want to do a checklist for "Artificial Recovery or System A and System B Loss Stress"?" Tan Heling asked.
Xu Cang's face froze: "Do it!"
Tan Heling looked at the navigation DU page and the plane was almost at five sides at this time. According to the estimated landing time on the process page on the CDU, the plane will land within four minutes, and the time is probably too late.
"There's not enough time!"
"Then do it according to the memory!" Xu Cang held the accelerator and took the airplane wheel while speaking, and maintained the aircraft's posture. He said, "Check the altitude, good speed, flap!"
The excessive pole force of the manual recovery still made Xu Cang feel uncomfortable. He felt more and more that he should exercise more.
When Tan Heling saw Xu Cang starting to put his flaps, he knew that Xu Cang really didn't plan to circle any more. However, now Xu Cang is the backbone in the cockpit. He didn't want to circumvent the flaps anymore, so let him go.
Thinking of this, Tan Heling directly placed the flap handle in the position of flap one.
At the same time, Xu Cangbian was operating the plane, and said, "There is no pressure on the B system. We will need to manually place the flaps later. Let's do some preparations first."
Since under normal circumstances, the hydraulic B system operates the aircraft's flap release, the hydraulic pressure of the system B system has returned to zero at this moment. Even if Tan Heling places the flap handle in one position, the flap will not change in reality. An electric motor needs to be used to release the flap using a spare flap method.
However, before replacing the flap, Xu Cang had to do some preliminary work, that is, to manually restore some contents in the inspection sheet.
As he said that, Xu Cang raised his right hand and said to the two black covers of the flight control panel above his head: "The backup rudder position of the flight control panel of the AB system!"
Tan Heling knew that Xu Cang was completing the manual recovery checklist based on his memory, so he did not compare the manual and directly followed Xu Cang's instructions. He stood up slightly, opened the AB system flight control door cover, and transferred it to the backup rudder position.
Xu Cang didn't even look up and verify Tan Heling's movements. The operation of the plane has really consumed too much of his energy. In the literal sense, he had no time to take care of Tan Heling's movements. Moreover, at Tan Heling's level, there would never be such a low-level mistake.
After hearing the sound of Tan Heling pulling the electric door, Xu Cang kept saying: "The yaw damper electric door is connected."
"The yaw damper electric door is turned on." Tan Heling followed Xu Cang's instructions and sat one by one.
Under normal circumstances, the deviation damper is turned on. However, after the hydraulic pressure of the AB system is too low, the switch may automatically jump open and need to be manually turned on.
"The hydraulic pump gates of System A and System B are all closed."
Under Xu Cang's instructions, Tan Heling turned off all the hydraulic pumps and electric pumps driven by the AB system engine, and then Xu Cang signaled Tan Heling: "Set the flap speed for fifteen."
Under the conditions of manual recovery, the landing configuration of the aircraft is unconventional with flaps thirty, but landing with flaps thirty. Tan Heling needs to reset the reference speed on the approach page of the CDU, because when he was preparing just now, he set the reference speed of thirty.
The new speed has just been set on Tan Heling's side. Xu Cang pointed to the panel below Tan Heling: "Near-ground flap suppression electric gate, flap suppression."
When the non-flap thirty configuration lands, if the switch is not suppressed, you will think of the configuration warning. It has no effect, but this will greatly affect the pilot's control. After all, a voice warning suddenly pops up, and the stress response is slightly stronger, so you can't just fly back directly.
As soon as Tan Heling suppressed it, Xu Cang continued: "Our landing gear has been put down, so there is no need to manually place the landing gear. You only need to spare the flaps."
The landing gear relies on the A hydraulic system. If the landing gear is to be released in this case, some special means must be used, namely, manually placing the landing gear.
However, in order to obtain a larger decline rate just now, Xu Cang had already put down the landing gear in advance, but he saved some steps.
"Okay, now start to put the flaps in the spare position." Xu Cang pointed to a power gate with a cover on the flight control panel again: "The main power gate of the spare flaps is pre-positioned, and the power gate of the spare flaps is kept lowered. We expect to put the flaps ten first, and then set the blind drops in the subsequent setting, and then put them on the flaps fifteen. Okay, let's put them!"
Tan Heling himself was the captain, and Xu Cang understood as soon as he said it. So, nodded, opened the main electric door cover of the backup flap, moved it to the pre-position position, and then continuously pressed the backup flap position electric door.
Since the power of the spare flap is only on a small electric motor, the release speed is very slow. After waiting for a while, the flap is placed in the position of flap one.
For some logical reasons, the leading edge transition light will remain lit before the flap reaches ten, even if it does not exist, the condition that causes the leading edge transition light to be on exists.
The three-person theory in the cockpit is quite solid. After the flap point indicates that the flap has reached a position, there is no corresponding checklist because the leading edge transition light is on.
Xu Cang glanced at the flap fingertip and continued: "Flag Five!"
Tan Heling silently followed Xu Cang's instructions and released his flaps again.
At the same time, on the tower of Jianchuan Airport, relying on the telescope, Director Liu could already visually observe the 9951N aircraft that was about to cut into the five sides in the sky.
After looking for a while, Director Liu put down his telescope and his expression was quite normal. Until now, the crew has not reported any other problems. Without a report, that is the best news.
"It's okay, it's okay, it's a false alarm." Director Liu even smiled at the corner of his mouth.
After all, Xu Cang often encounters some world-class major accidents, and it was thrilling to make a landing on the seaside on Qizhou some time ago. In this way, thank God for some smaller flight accidents that happened to Xu Cang.
After throwing the telescope to his assistant, Director Liu looked relaxed and scanned the situation of the apron below. In order to make enough space for Xu Cang to display, Director Liu not only cleared the airspace, but also the airport road surface was almost cleaned.
There was no aircraft on the main taxiway adjacent to the runway. One of the planes that had already been about to slide out was stopped by the ground control. The nose of the plane was facing the main taxiway A and stopped in place.
According to the plan, the plane will land soon. After the plane lands, the field will conduct a patrol and confirm that there is no problem with the road surface, then it will take off. Therefore, the Muhua Airlines plane parked in front of the main taxiway A did not slide back.
"Are the trailer ready?" Director Liu confirmed with his assistant again.
The assistant quickly said, "You are ready. Once the plane lands, we will arrange a tow truck tow it away. The yard truck for subsequent road surface inspections is also on standby. Everything is normal, and takeoff and landing can resume in ten to fifteen minutes."
"Okay!" Director Liu was very satisfied with his assistant's arrangement. At this time, when he turned around, he could see a small black dot in the five sides of Runway No. 05. It seemed that the plane was not far from the landing.
"What a good weather!" Perhaps it was a sense of joy that he had survived the disaster. When he saw 9951N suspending the emergency code, his first thought was that it would not be an incident like the 747S2 switch.
However, within ten minutes, the plane was about to land. How could it be unhappy?
Thinking of this, Director Liu couldn't help but laugh and scold: "This kid Xu Cang gave me such a big gift before I left!"
At this time, in the cockpit, the aircraft's configuration was ready and the aircraft had turned into the five-sided downhill. Xu Cang finally glanced at the cockpit panel and confirmed that there were no new problems. He patted the thrust handle with his right hand: "Brother Tan, you can control the accelerator."
"Hmm? What's wrong? Is there any problem?" Tan Heling tightened and instinctively looked up and swept across the panel. He thought something was wrong.
Xu Cang shook his left hand: "It's too hard to recover artificially, and one hand is a little uncontrollable."
"Oh oh oh, this." Tan Heling, who suddenly realized, laughed and hurriedly took over the thrust handle: "Okay, I'll control the accelerator."
After freeing his right hand, Xu Cang kept holding the plate with both hands, and now he felt a little more comfortable. Just after relying on his left hand to control it, he felt a little sore and numb on his left wrist.
Seeing that everything was normal and the landing was about to fall, Mo Shangyun even felt in the mood to tease: "Xu Cang, you have to go down to exercise, and you can't even hold on to the plate."
"Yes!" Xu Cang also smiled bitterly.
For a moment, the cockpit was filled with a cheerful atmosphere.
It is not a big deal for the three of them to relax. Although Xu Cang complained that he was very tired, Xu Cang was really unambiguous in terms of operation. If he hadn't known that the plane had lost all the hydraulic pressure, from the perspective of somatosensory, he wouldn't even feel that this was an artificially recovered aircraft.
As the altitude of the plane became lower and lower, Xu Cang's hand movements were still very steady. After being below the determination altitude, Xu Cang turned to the visual stage, and others artificially asked Tan Heling to slightly reduce the accelerator, making the plane gradually slightly lower than the normal glide in a relatively gentle state.
Under such operation, when the aircraft enters the runway, the PAPI appears exactly three reds and one whites, which is consistent with the entry height that Xu Cang had expected to enter the field before.
“It looks like we’re lucky.”
Seeing this, Xu Cang was still relaxed and even had time to make a joke before landing. Under this sentence, the other two showed a knowing smile.
Without Xu Cang's instructions, Tan Heling started to slowly recharge the accelerator with his own experience, while Xu Cang gently increased the attitude of the plane.
With a dull sound, the main wheel of the plane fell down indirectly. Due to the insufficient hydraulic pressure, Xu Cang did not have a pre-position reduction plate and did not intend to use reverse push.
Just as he was about to pull up the speed reduction plate manually, the plane that was originally slid normally suddenly began to tilt to the left.
At first, Xu Cang was planning to use the rudder to push the plane back to the center line of the runway, but from the corner of his eyes he suddenly noticed that the red light on the left landing gear indicator light of the landing gear light was on at some point.
Xu Cang's hair stood up all over his body. After almost no thought, he pushed all the accelerator that had just been retracted to the front, and pressed the plate to the right at the same time to prevent the plane from tilting to the left.
"Xu Cang, what are you doing?" Xu Cang suddenly added the accelerator and shocked Tan Heling.
Just now, after receiving the accelerator, he moved his left hand away from the accelerator rod. But it all fell to the ground. Xu Cang was crazy, and he had to add the accelerator to full.
"Didn't the left landing gear be put in place?" Mo Shangyun sat behind and saw clearly and reacted faster. After Xu Cang, he also noticed that the red light on the left landing gear was on.
"What?" After Mo Shangyun's reminder, Tan Heling noticed that the red light on the left landing gear actually lit up, and he didn't notice it at all.
Since it is right in front of the field of view, the red light will not cause the main warning light to light up when it is turned on.
As a result, Tan Heling immediately understood. No wonder the plane suddenly deflected to the left just now. It turned out to be the landing gear. He thought that Xu Cang had not controlled the direction.
Caught off guard, the plane had already deviated a lot. If it slid down again, the plane could no longer be repaired on the runway, so it would definitely be rushing out of the runway. Therefore, Xu Cang wanted to make another round and make a prepared part of the landing gear to land.
Although it is difficult, when you are prepared, the risk can be controlled. Moreover, it is impossible to deal with this fault in a while.
Fortunately, this situation occurred very quickly, and Xu Cang's reaction was also very fast. He did not pull up the speed plate or put on the brakes, so that the plane did not slow down much.
Therefore, after Xu Cang added the accelerator, the speed of the aircraft began to rise again under the whistling of the two engines. As the speed increased, the rudder effect of the aileron began to become obvious. The left wing tip, which was about to touch the ground, stopped the trend of falling and became horizontal again.
"Xu Cang, you're so fast, go!" Mo Shangyun shouted from behind.
When Xu Cang heard that the speed was enough, he subconsciously carried the wheel back with the normal re-flying force. Xu Cang knew that the pitch of the wheel was limited, and no matter how hard he used, he would not bring too much back, so he did not control his own strength very much.
However, after Xu Cang pulled the wheel that had been restricted in front, it was pulled out a lot by Xu Cang back.
Fortunately, the speed of the plane was far beyond the wheel lifting speed at this moment, and the plane immediately left the ground in the driving wheel. Otherwise, with Xu Cang's large pole capacity, the plane would definitely have to wipe the tail again.
"What's going on? Isn't it stuck?" In this reaction, Tan Heling's pupils suddenly contracted. Didn't the driving wheel only move back and forth within a very small range? Why was Xu Cang pulled so much out again?
Mo Shangyun actually didn't understand why such an accident occurred, but this could not be good news, at least the pitch and control of the aircraft was no longer restricted.
Moreover, even though Xu Cang's starting rod movement was very thick and vigorous just now, from a physical perspective, it seemed that the plane showed no sign of the tail of the plane.
"It's okay, it's okay! Xu Cang, didn't wipe the tail of the machine!" Mo Shangyun couldn't help but say fortunately.
However, Mo Shangyun soon noticed Xu Cang's dead face. His heart skipped a beat and immediately realized that something was wrong: "Xu Cang, what's wrong?"
Xu Cang pushed the driving wheel hard and shouted: "No! It's stuck!"
Tan Heling was shocked all over. He also held the driving wheel with both hands and exerted force suddenly. However, the driving wheel, which was originally slightly moved just now, had a root again. Under the control of the two, there was no movement at all.
"It's stuck, it's really stuck!"
To be continued...