Outside the cabin door, Zhang Qijun stood on the passenger elevator car and leaned on the handrail, breathing the cool breeze in the morning, and there was still some fog in the morning.

He is not very old, and if he wakes up in the morning, he is also sleepy, and he always needs to blow a cold wind to wake up.

After calming down for a while, Zhang Qijun poked his head into the cabin and looked for the ground service staff at the airport. In the cabin, except for the flight attendants, no ground service personnel were found.

Seeing the captain showing his head, the purser in the cabin asked, "Captain, can you turn on the lights?" ”

Now the plane has not been powered, only the emergency lights in the cabin emit a faint light, it is still early, the outside is not fully lit, and even the entire cabin is not visible.

The flight attendants couldn't see anything, and they all sat on their seats at the front of the cabin and played on their phones.

Zhang Qijun pouted and said, "This plane hasn't been powered on yet, it'll be fine for a while." ”

As he spoke, Zhang Qijun shouted towards the cockpit: "Xu Qing, isn't there any power yet?" ”

"It's almost time to start the APU." Xu Qing's answer came from the cockpit.

"Did you hear that, it's almost there." Zhang Qijun said to the purser: "By the way, have you seen the ground clothes?" ”

"Ground clothes? Didn't you see it, did you see it? The purser shook his head and went to ask the other flight attendants. None of the people who responded to her did not see it.

Zhang Qijun complained: "The crew is here, but the ground service is not here, it's really outrageous." Forget it, I called myself. ”

Zhang Qijun didn't have the on-site phone number of the airport here, so he could only call the company's dispatch number first: "I am Zhang Qijun, the captain of Xingfei 8342, you can help me contact the scene in W City and let them notify the passengers." ”

The dispatch checked the information of Xingfei 8342, and when he saw the take-off time, he was a little strange: "Captain, there is still an hour before the take-off time, will it be too early." ”

"The good location you arranged for us, the boarding gate and the parking stand are diagonal, and when the shuttle bus comes, you can also let passengers walk around the airport for half a circle, which is really well-intentioned." Zhang Qijun was so angry that the dispatcher couldn't say a word for a long time.

"Okay, I'll let the airport know here." What Zhang Qijun said also makes sense, there is no way to send but to follow Zhang Qijun's meaning.

"I'm sorry for you." Zhang Qijun hung up the phone and twisted his waist a few times outside the cabin door, preparing to go back after a while of blowing the wind.

Zhang Qijun twisted his waist for a while, and when he turned around, he saw Xu Qing at the door of the cabin.

"What's wrong? You ready? Zhang Qijun's gaze shifted to the cabin behind Xu Qing, obviously there was no light yet.

Xu Qing pointed in the direction of the cockpit and said, "The APU seems to be broken." ”

"What did you say?" Zhang Qijun was stunned when he heard this, and he almost flashed his old waist when he didn't pay attention: "No...... What about maintenance? ”

Xu Qing pointed to the bottom of the nose: "They may be down there, I'm about to go down to look for it." ”

Xu Qing said that wearing a reflective vest is a hard rule if you want to get off the apron, you must wear a reflective vest.

"There is a problem with the APU that is not written on the DD list." Zhang Qijun rubbed his temples, feeling a little irritable. On the way they just came, they could already read the electronic information on the Internet, and there was no record of any problems with the APU on the DD list.

The APU is an auxiliary power component that can supply air and power, and is an important part of the aircraft, and the lack of an APU will have a huge impact on flight operations. It's not that you can't operate flights without APUs, but there will be a lot of restrictions out of thin air, and it will be very troublesome to operate.

"There is indeed no description of APU failure on the DD list, and I also read it when I came over." Xu Qing put on a reflective vest and was just about to go down, but the maintenance came up.

As soon as Zhang Qijun saw that the maintenance was coming, he grabbed the hand of the maintenance as if he was grasping a life-saving straw, and said excitedly: "The APU is broken...... Brother, can you get it? ”

"I can't do it!" The eldest brother dropped this sentence expressionlessly, then grabbed Zhang Qijun's hand with his backhand, and said earnestly: "It's not that we don't work hard, when we came over this morning, we found out that we couldn't start it after starting it three times, and it doesn't feel like a small problem." ”

"You've already been here, why didn't I see you just now?" Xu Qing said curiously on the passenger elevator.

The face of the maintenance was full of helplessness: "We came early, we started the APU on the plane, we couldn't get it, so we went to other places to seek support, but I didn't expect you to come during the departure." ”

"No wonder." Xu Qing suddenly realized that the normal maintenance should have come before the crew, and this time they hadn't seen the maintenance since they got on the plane, and they were still strange in their hearts.

"That is, it was fine when I came here last night, but it won't work this morning, what luck!" Zhang Qijun beeped and said: "No, I let the passengers go, and the ferry cars are probably on the way." ”

Zhang Qijun suddenly raised his head, blinked his big eyes, and asked Xu Qing cutely: "Are you hot?" ”

Xu Qing's eyebrows were squeezed together, and his head was full of question marks: "Brother, what are you talking about?" ”

In the morning breeze, the two young people who were no more than five years old looked at each other, and there were no sparks in their eyes, only a full screen of doubts.

"Ouch, you shouldn't be able to suffocate people." The maintenance of the aircraft is exquisite, and it is clear at a point, but what he says is really not flattering.

"Can't suffocate people? What are you talking about? Xu Qing's puzzled gaze was fixed on the maintenance, were the captain and the maintenance playing dumb riddles?

Maintenance: "The weather hasn't been hot lately, as long as there is no delay, the passengers should not rebel." ”

"Passengers?" Xu Qing grasped the key point and figured it out at once. There is no APU and there is no air source, and there is no air conditioning, and the passengers will be on board later, less than 200 people are nested in the cabin, and if there is no air conditioning, if the weather is hot, it must be the same as a steamer, who can stand it?

Fortunately, the temperature in W City is not high recently, and the take-off time is just in the morning, if the sun is directly exposed at noon, even if the temperature is not high, it can't stand such a sun. You must know that everyone is constantly emitting infrared rays outward, and there is no air conditioning, the air circulation is not good, and it is easy to suffocate for a long time.

"Don't you have air-conditioned vehicles on the ground?" Xu Qing asked the maintenance.

Now the plane is parked in a remote position, and it is easier to park by the covered bridge. Generally speaking, the bridge is equipped with ground power and air conditioning, which is much more convenient to connect to electricity and gas. Nowadays, there is nothing near the parking stand, the aircraft does not even have an external power supply, and now it consumes its own battery power.

"No, did you notify the ground power truck?" Xu Qing reacted at this time, isn't the most important thing now to find a ground power source for the aircraft? You can't just let the plane have emergency lights all the time.

There are relatively few ground air-conditioned vehicles, and ground power vehicles are more common, most airports are equipped, and the scale of W city airport is not small, and ground power vehicles should be available.

Just now, Zhang Qijun said that the ferry car is estimated to be on the way, and when the passengers can't come over, they see a plane that doesn't even have electricity, which is too unprofessional.

The maintenance waved his hand: "It has been notified just now, it should be there in a while." ”

"Oooh!" Xu Qing breathed a sigh of relief, glanced at his watch, there were still fifty minutes before the take-off time, and complained a little to Zhang Qijun: "Brother, your action is too fast, in case we don't get it done here, the ferry will come, let them wait in the car?" Brother, there are still fifty minutes left, and you make us very passive like this. ”

Zhang Qijun knew that he was wrong, and muttered in a low voice: "Don't you want to leave early?" Why don't I get in touch with the shuttle bus to go back? ”

"It's all on the bus, where is there any reason to go back, it's better to let them wait in the car!" At this time, Xu Qing stood on the moral high ground, incarnated as a keyboard warrior, and criticized Zhang Qijun. In fact, Zhang Qijun didn't make any mistakes of principle, he was just a little anxious, if he knew that there was a problem with the APU, Zhang Qijun would definitely not be such a visitor.

The key is that when I flew over last night, there was no problem, why didn't the APU last night, it makes sense, who to reason!

APU convulsions, no one expected.

"I'm still looking forward to the early arrival of the ground power truck, hey, what about the ground air-conditioned car? How to say! Xu Qing once again brought the topic back to the ground air-conditioned car. If there is a ground air-conditioned car to solve the air-conditioning problem of the cabin, the other is not too troublesome, that is, use the ground air source car to make an alternating bleed air starting engine.

"Don't think about ground air-conditioned cars, there are few of our domestic airports." The maintenance suddenly poured cold water on Xu Qing.

Zhang Qijun interjected a sentence: "Let's shout together with the ground gas source vehicle, there will be a starting permit for a while, and you will have to wait for the ground gas source vehicle." ”

In normal times, the APU can supply power and gas at the same time, but now the APU is gone, and can only rely on external help.

The ground power supply vehicle and the ground air source vehicle supply are indispensable. After starting one engine with a ground power supply vehicle and a surface air source vehicle, the other engine is started by alternating bleed air.

"The ground air source car shouted, and I was waiting next to it for a while." The maintenance replied.

Xu Qing immediately accepted the information revealed in the words of the aircraft maintenance, crooked his mouth, and said tentatively: "It means that the APU can't be repaired?" ”

"I can't figure it out, keep it." The maintenance is very honest.

It's not that you can't fly without an APU, according to MEL, you can be released without an APU, but there are some restrictions, the most important of which is the number of AC power sources.

It is mentioned in the abnormal procedures section of the SOP and in the QRH that once the aircraft has only two sets of AC power supply, it must land at the nearest airport.

There are normally three sets of AC power sources on the 737, namely the generator driven by engine 1 and the generator driven by engine 2 and the power provided by the APU.

The APU can be powered at an altitude of nearly 40,000 feet, note that it is a separate power supply, and if you need to supply gas at the same time, the altitude limit will be much lower.

40,000 feet is almost the ceiling of 737, so the APU can provide power at full altitude.

If the APU is not available, then the aircraft only has two alternating current power sources driven by the generators of the first and second engines, and in case the generator of one of the engines fails, then the aircraft must be diverted nearby.

"Forget it, hurry up if you want to keep it, try to minimize the time passengers spend in the cabin, and don't make passengers wait...... I'm going, how did I come. Zhang Qijun said, and out of the corner of his eye, he caught a glimpse of a ferry car already in sight.

Zhang Qijun almost spurted out a mouthful of old blood, how long has it been, and it has only been more than ten minutes since he contacted the dispatch, how can the ferry come. Is this ferry car turbocharged?

At this time, Zhang Qijun's mobile phone rang, Zhang Qijun clicked on it and saw that the number was the number of the dispatch seat, and as soon as it was connected, the voice of the dispatch came from the other end of the phone: "Captain, when I notified the airport, the airport said that the shuttle bus had already gone out, and it was estimated that the shuttle bus would arrive in a while." ”

Zhang Qijun smiled bitterly: "It's not that the ferry bus will arrive for a while, it's already there." ”

"Captain, that's good, you can get busy first." The dispatch was quite happy, and hung up the phone happily, satisfied that he had completed his task well.

Zhang Qijun looked up to the sky and sighed, this W city airport will still "rush to answer", and other airports will not do anything without a whip behind the buttocks. Good guys, at W City Airport, I have met such a diligent airport once.

Even if there is fire in your heart, you can only hold it back.

"Purser!" Zhang Qijun roared at the top of his throat.

The purser poked his head out of the door, saw Zhang Qijun walking towards her violently, and said curiously: "Captain, what's wrong?" Is it a guest? ”

"Can you get a guest? Let the passengers be blind in the cabin! Block the passenger ladder and don't let passengers come up. Zhang Qijun looked around with a pair of eyes, and looked at the ground power supply vehicle, as long as there is ground power supply, everything is easy to say.

But after looking around, there was no shadow of the ground power truck.

Zhang Qijun saw the ferry car getting closer and closer, and at this time, the sun was rising, and the soft light sprinkled on Zhang Qijun's angular face, reflecting him like a sculpture full of beauty, but now the sculpture was trembling.

Chill the breath!

He pointed to the stunned machine attendant below, and said righteously: "Brother, we can't stop it later, you have to help, you have an unshirkable responsibility for the current situation, don't want to escape." ”

Truth be told, one or two of the less than two hundred passengers had a temper tantrum in case. I'm all on the plane, why don't you let me get up?

There are even people who throw coins into the engine, there are even people who open emergency exits to cool off, and there are people who force their way into planes. This time, the crew is all women, and one of the safety officers is a man, so if something goes wrong, the big brother of the crew is helpless.

Now the ground power supply truck has not yet arrived, and if you want to keep the APU fault later, you have to fill in various lists, and at the same time, you also need to label it, which is a lot of trouble.

When the shuttle bus was about to get under the plane, Xu Qing and Zhang Qijun hurried back to the cabin, they were not part-time flight attendants.

Not long after Zhang Qijun entered the cabin, the phone rang again, this time it was still dispatched, but it was a different person, and it was not a big deal, that is, the weather on the route was not very good, pay attention to the amount of fuel and the detour.

The weather on the route is not good, and Zhang Qijun doesn't take it very seriously.

It's normal to have dangerous weather on the route, the world is so big, and some dangerous weather is not very normal? Just follow the rules and make a circumference. Each airline has clear regulations on the detour of dangerous weather, and it does not mean that you can detour as much as you want. Moreover, different altitudes have different requirements for the flight interval, and Zhang Qijun is already familiar with these regulations, but he has no burden in his heart.

After Xu Qing and Zhang Qijun got into the cockpit, they didn't know if it was a psychological effect, and felt that the cockpit was getting more and more stuffy, so the two of them opened the window on one side of each side, and only after ventilation did they feel slightly more comfortable. Now that the sun has risen, the temperature will get higher and higher in the future, and it is better for them to leave early.

The maintenance was right, not long after Xu Qing and Zhang Qijun entered the cockpit, the ground power supply truck arrived. With the ground power supply car, after the ground power is connected, Xu Qing can operate normally. Zhang Qijun had nothing to do, and personally went out of the cockpit to tell the purser that he could get on the passenger. Not long after the ground power supply truck came, the ground air source truck also came. At present, there is no need for ground-based gas vehicles, which are on standby.

Xu Qing prepared the cockpit quite quickly, and after completing the cockpit preparation, he took the time to go down and get the fuel bill.

During this period, Zhang Qijun checked the flight information, and even if there was no manifest, he could still see the total number of passengers.

"Full of customers!" Zhang Qijun sighed, put the phone back in his pocket, leaned back on the seat, and tilted his head to look at the endless stream of guests.

When Xu Qing was preparing for the plane, Zhang Qijun was bored, so he asked for electronic release, and at the same time contacted the scene: "At the scene, Xingfei 8342, can you help me see if everyone is there." ”

Gates usually close fifteen minutes before departure, although rules may vary from airport to airport, but they should be the same.

The advantage of the bridge over the farther seat is that if there are no people arriving fifteen minutes before takeoff, the people who have not arrived behind can be intercepted directly, the boarding gate can be closed, and then the cabin door can be closed after counting the number of people.

Remote seats make a big difference, and the key is the delay from gate to plane.

As long as there are no people, the boarding gate will only close 15 minutes before departure, and the shuttle bus can depart. At this time, the shuttle bus to the plane is likely to take more than 15 minutes for passengers to board the plane, which is one of the reasons why there are often delays in the remote stands.

The shuttle bus is originally a scarce resource, like Xingfei 8342, there are more than 170 people on this flight, which is close to full. One shuttle bus can't fit and two shuttle buses are needed. When the first shuttle bus is full, you can leave, but the second shuttle bus cannot. The second shuttle bus closes when the boarding gate closes when everyone is walking together or fifteen minutes before departure.

Even if only one person didn't come, the second shuttle bus would have to wait. Because in case the second shuttle bus leaves and that person comes again, the airport has to send an additional car over, which is very time-consuming and labor-intensive.

Of course, if that person came back after the gate was closed, it would be no wonder to the airport and the airline.

Zhang Qijun could only pray that the person who did not pull his hind legs could let another shuttle bus leave early. If someone makes it to the gate at the last minute, or doesn't show up at all, it's time to stop. It takes more than 20 minutes from the boarding gate to the parking stand, and it takes more than 10 minutes to board the plane after arriving, and they have to delay at least more than 20 minutes.

Moreover, the procedure of starting the engine from the ground source is still more complicated than the normal starting procedure, and the time required is naturally longer, so it is appropriate to delay it for more than half an hour.

Fortunately, God bless Xingfei, this time there was no delay among the passengers, just came from the boarding gate, everyone has been on the ferry, the shuttle bus should have departed.

From getting on the plane to now, I finally heard a good news, which made Zhang Qijun breathe a sigh of relief.

Zhang Qijun was thinking about how to speed up the progress on the side, Xu Qing was doing his own thing conscientiously, he didn't care about Zhang Qijun, anyway, Zhang Qijun liked to check after the co-pilot was all done.

Just now Zhang Qijun asked for electronic release, and before Xu Qing was ready to finish, the electronic release had already arrived. Zhang Qijun saw that the electronic release was coming, but he just glanced at it, and there was no movement in his hand. It was already his limit to ask for an electronic release on a whim, and now it was definitely impossible for him to reply to the electronic release and repeat it at the release frequency.

You can do it, but it's not necessary, a little more work won't work!

Xu Qing saw that Zhang Qijun just glanced at the printed electronic release, and there was no action at all, and he smiled bitterly in his heart. I'm already lazy, how can there be anyone lazier than myself, not to mention replying, I don't even owe a glance at the electronic release, it's also an eye-opener.

Maybe in Zhang Qijun's eyes, the captain should be like this in the cockpit, let the co-pilot do all the chores, and just verify it himself.

If the captain doesn't make a difference, then Xu Qing can only take it all.

After Xu Qing finished preparing the cockpit, he tore off the paper of electronic release, began to read out the content of electronic release aloud, and began to modify the aircraft parameters according to electronic release.

Xu Qing read aloud the electronic release, not only to himself, but also to the "old man" on the left. It's just that Zhang Qijun was closing his eyes at this time, and he didn't know if he heard what Xu Qing was saying.

Verify that the departure runway and departure procedures in the CDU are consistent with the electronic release, and at the same time, the starting altitude and transponder are also reset, and after confirming that they are correct, Xu Qing also needs to contact the release frequency for repetition.

The original K-City Airport was one of the few major airports that did not need to be repeated. Note that the repetition here refers to the repetition of the phonetics, and even in the city of K, confirmation of the electronic release on the CDU is still required.

Xu Qing adjusted the release frequency and reported: "Xingfei 8342, repeat the PDC." ”

"Xingfei 8342, please speak!"

"You can be released to N City, using runway 04L, Xishui 07D to leave, starting altitude 1200 meters, transponder 3503, Xingfei 8342." Xu Qing said.

Release: "Xingfei 8342, recite correctly, ready to report." ”

"Prepare to ......" Xu Qing planned to report back, but in the middle of his words, the corner of his eye suddenly caught a glimpse of Zhang Qijun approaching at some point, Xu Qing was caught off guard and trembled with fright.

I saw Zhang Qijun whispering two words, flow control!

It turned out that Zhang Qijun just remembered that the company sent to say that the weather on the route was not good, and if the weather on the route was bad, it might lead to flow control.

If there is a delay, even if the passenger finishes boarding, he is not in a hurry to close the cabin door. Now the plane is not air-conditioned, and the cabin door is still open. What if the door is closed, and there is a delay, there is no air conditioning, and the door is closed again, and the passengers must not suffocate to death? At that time, the cabin will have to be opened twice, and once the cabin is opened twice, the company will definitely have to investigate crookedly, which is all troublesome.

Therefore, he now needs to know whether there is flow control in advance, so as to use it as a reference for the decision of whether to close the hatch later.

To be honest, Xu Qing lacked experience in operation, and he really didn't expect this link. Flight operation is more than just flying, and it doesn't mean that you fly well and are a good captain. The captain has to take into account all aspects of the problem, there are many rules in civil aviation, and if you are not careful, you will fall into the pit, and the captain must have a vision of the overall situation.

Xu Qing's experience in flight or to be precise in special situations may be deeper than most captains, but in some flight details or operational experience is dwarfed, it can only be said that Xu Qing still has a long way to go. However, after Zhang Qijun's reminder, Xu Qing suddenly figured out the joints, and quickly changed his words: "Prepare..... Good news...... Also, I would like to ask if there is a flow control in N City? ”

The release control waited for a while, probably to check, and after waiting for a while, he finally spoke: "Xingfei 8342, there are some small flow controls over there in N City, you are ready, I will help you apply for time." ”

Xu Qing glanced at Zhang Qijun again at this time, and Zhang Qijun motioned to Xu Qing to ask about the reason and approximate time of the flow control.

"What is the reason for the flow control? How long will it take! Xu Qing asked, "It's convenient for me to explain to the passengers." ”

The situation Xu Qing said is quite common, and it is normal for planes to be delayed, and passengers are not surprised. But passengers still hate the kind of waiting for no reason, no time. As long as you can give them a reason for the delay and an approximate waiting time, it can be quite helpful to reassure the passengers.

The release control knew the joints, but he did not hide it, and said at the time: "The reason for the flow control is the weather on the route, as for the time, it should not be very long, about 20 minutes." If you go to N City, you will be second in line, and it won't be long. ”

"Oh, thank you then." Xu Qing thanked.

Zhang Qijun lay back on the chair and let out a sigh: "Fortunately, it's more than 20 minutes, not very long." ”

At this time, the maintenance came into the cockpit and took a label and put it next to the starting door of the APU. Zhang Qijun asked casually, "Reserved?" Can't get it here? ”

"It's too late, and I don't have any equipment, so I'll wait until I get back to the base of N City to repair it." The maintenance staff got the label and handed the maintenance book to the captain: "We have released it according to MEL, and you sign this." ”

"Oh, okay." Zhang Qijun nodded, he was not surprised at all. The APU is a small engine, and if something goes wrong, it is very troublesome to repair, and it takes not only time, but also equipment. W City Airport is just an overnight airport of Star Fly Airlines, and there is no sub-base, there is no equipment for repairing APUs here, and time is not allowed. I can only release it according to MEL reservation, and wait for the plane to return to the airport in N city, which is the base camp of Xingfei Airlines, and it is much easier to maintain.

Zhang Qijun certainly knows that he can continue to operate without APU, and even the restrictions on MEL on retaining APU failures are also clear to him, but before signing and confirming, he still habitually flipped through the records of the maintenance book to see if there were any problems encountered in the previous flight.

According to the requirements of the airline, if the pilot encounters an aircraft failure problem during the flight operation, after the end of the flight, he should not only inform the maintenance of the aircraft where the problem is and what the phenomenon is, but also fill in the description of the failure problem in the maintenance book, and it is bilingual in Chinese and English.

Zhang Qijun's habit is to look through the maintenance book to see if there are any failures reported by the pre-sequence flights, so that he can be prepared. Of course, he certainly can't read them all, just look at the records of the last few days.

Checking the fault records of the maintenance book is not a mandatory requirement, but just Zhang Qijun's personal habit.

Zhang Qijun flipped forward, and sure enough, there was no description of the APU in the flight record that came over last night, and there was still no fault record if he flipped forward, and there was still no ......

He flipped to five days in a row, and there were no fault reports, thinking that it should be almost over, so he was ready to sign for confirmation. At this moment, a gust of wind blew in, and the window on his side was open, and the wind poured in, just blowing the laptop. Zhang Qijun happened to find that the flight on the previous page seemed to have a fault record.

Zhang Qijun pressed the idea of wanting to sign for confirmation, and turned the page further, and sure enough, there was a fault record on the flight from N city to Z city this time.

In fact, it is not a big deal to have a fault record, and it is very common for the aircraft to have a problem occasionally, as long as it is repaired in accordance with the regulations. Zhang Qijun looked at the fault record of the maintenance book, which does not mean that the plane with the fault record is not safe, so I will not fly. If this idea is followed, there will be basically no aircraft that can meet his requirements.

It is completely a personal habit for him to look through the fault records of the maintenance book, and there is also a precautionary measure, because some small problems cannot be found.

For example, he flew an airplane before, and the pre-flight report took off during takeoff, but the crew checked the take-off form and there was no problem, and finally suspected that the airbrake could not be contacted, causing the plane to think that the airbrake was not in the lower card position during takeoff, so there was a take-off form warning.

This kind of occasional bad contact is not uncommon, Zhang Qijun read the fault record and said this matter in the take-off order, and took the false warning that they encountered the take-off form again.

For example, the cargo compartment sensor of some aircraft sometimes convulses, and the indicator light of the cargo door will be intermittently on during takeoff, but in fact, the cargo door has been closed well.

If you are not prepared for this kind of thing, it is still quite scary, if you look at the fault record and know that this plane has had this kind of situation before, and you are prepared, so as not to meet it suddenly and panic.

If it is other fault records, Zhang Qijun may be swept away, but the fault record of N city to Z city a few days ago is related to the electrical system, which makes Zhang Qijun more sensitive in the context of APU not working and having lost an AC power supply.

Zhang Qijun pointed to the fault record, signaled to the maintenance, turned his head and asked the maintenance: "Is there a problem with the generator driven by the engine of this aircraft before?" ”