Maintenance workers at South-west airlines just getting started. Tonight they are going to open Boeing 737-700. Almost 40 inspectors and mechanics are going to spend the night making sure the plane is fit to fly. To keep airplanes in peak condition they get more the most passengers.
Passenger planes are examined every time they come to a stock. This is the “A” check. A brief walk around inspection turns of the most obvious problems. The more intensive work is done. These are “B” and “C” checks.
Tonight workers are performing a “C” check. From start to finish, it can require hundreds of person-hours of work. It all has to get finished tonight, so the plane is back fly in the morning. It`s a massive challenge because modern jets are made of hundreds and thousands of individuals pieces.
In 1903 when the Right brothers took their historic first flight near Kitty hawk, North Carolina, their plane had some of 1500 parts. A 737 has more than 360 thousand parts.
“You have to ensure that every one of those components is doing it`s respective job. It doesn`t matter how big the part is, a missing screw can jeopardize the safety of flight.”
Tonight the inspectors discover a tire on one of the main landing gears is worn out. They added it to the list of unscheduled maintenance items. It has to be replaced before the plane goes back into service.
In Phoenix, Arizona, flight engineers continue the “C” check on the 737. It includes testing the plane’s rudder. The rudder is the one of the jet`s most vital control surfaces. It allows the plane to turn left and right. A problem here could have terrifying consequences.
It`s 7 a.m. After an 8-hour shift, the maintenance is finished on this “Southern-West airlines” Boeing-737. According to the maintenance reports, the team has conducted 78 unscheduled procedures and 339 scheduled inspections. This is the most amazing system. This system depends on a dedicated team of professionals committed to taking care of this 21st century masterpieces. Planes so well built that they could fly almost as long as we willing to take care of them.
“We have learnt how to inspect and maintain these things and even they should have indefinite life. They are built tough and should be able to last forever if the maintained properly. ”
1) What is the priority of the ground staff at the time?
They were making sure the plane is fit to fly.
2) How many people are involved in the procedure?
Almost 40 inspectors and mechanics.
3) How can perfect technical condition of an aircraft be provided?
Passenger planes are examined every time they come to a stock.
4) What kind of checks does every aircraft regularly go through?
These are “A” “B” and “C” checks.
5) What are the purposes of A, B and C checks?
The “A” check is a brief walk around inspection turns of the most obvious problems. There is one main purpose of these checks the passengers safety.
This is performed approximately every 400-600 flight hours or 200–300 cycles (takeoff and landing is considered an aircraft “cycle”), depending on aircraft type. It needs about 50-70 man-hours and is usually on the ground in a hangar for a minimum of 10 hours. The actual occurrence of this check varies by aircraft type, the cycle count, or the number of hours flown since the last check. The occurrence can be delayed by the airline if certain predetermined conditions are met.
This is performed approximately every 6-8 months. It needs about 160-180 man-hours, depending on the aircraft, and is usually completed within 1–3 days at an airport hangar. A similar occurrence schedule applies to the B check as to the A check. However, B checks may also be incorporated into successive A checks, i.e.: Checks A-1 through A-10 complete all the B check items.
This is performed approximately every 20–24 months or a specific amount of actual flight hours (FH) or as defined by the manufacturer. This maintenance check is much more extensive than a B check, requiring a large majority of the aircraft’s components to be inspected. This check puts the aircraft out of service, and the aircraft must not leave the maintenance site until it is completed. It also requires more space than A and B checks. It is, therefore, usually carried out in a hangar at a maintenance base. The time needed to complete such a check is at least 1–2 weeks and the effort involved can require up to 6,000 man-hours. The schedule of occurrence has many factors and components as has been described, and thus varies by aircraft category and type.
6) What makes a C check so challenging?
Because modern jets are made of hundreds and thousands of individuals pieces.
7) How different are modern aircraft from those operated by the Wright brothers?
Their plane had some of 1500 parts. A 737 has more than 360 thousand parts.
8) Does the size of a component play an important part for the flight safety?
There is no difference is it small or huge, if it has an important role related to safety.
What can missing or malfunction of any part result in?
It can leads to terrible consequences.
Do you know any examples of non-routine situations caused by maintenance errors?
9) What fault did the ground staff notice that time?
Tonight the inspectors discover a tire on one of the main landing gears is worn out.
10) What actions do they need to take to solve the problem?
They added it to the list of unscheduled maintenance items.
11) Why is checking the rudder so vital?
The rudder is the one of the jet`s most vital control surfaces.
12) What is the function of the rudder?
Because It allows the plane to turn left and right.
13) How many procedures did the ground staff perform during the C check?
According to the maintenance reports, the team has conducted 78 unscheduled procedures and 339 scheduled inspections.
14) According to the film, what does the maintenance system depend on?
This system depends on a dedicated team of professionals How can it ensure safety for all people flying?+
15) Do you agree that under some special conditions any aircraft can fly forever?
Planes so well built that they could fly almost as long as we willing to take care of them.
16) Can you give examples of any aircraft types designed many years ago that are still in service? Yes, It’s legendary Ilyushin 18 according to statistic data.