When the Wright brothers created the first flying machine it was termed as the biggest breakthrough in science. The flying machine was only able to carry a single person but with the development of its designs and structure, we now have airplanes of many sizes and capacity. We have jets that are able to break the sound barrier and we have jets powerful enough to carry tons of weight at great speed. But all of this has been made possible with neck breaking and brains racking engineering and art. The shape has been modified and the jets of today are super in speed and performance.

An airplane flying in the air is vulnerable to the slightest disturbance and it can be easily blown to pieces by even the smallest air pressure disturbance inside. Some incidents of the past have revealed that an air plane no matter how tough it looks on the ground can be volatile in the air. That is why the need to create the most tightly packed and sealed aircraft is essential. When a new design is created, its miniature models are tested for air friction in the lab. But a real life sized air craft can only be tested in reality and not in labs. The only way to check its tightness is by the hatch cover ultrasonic tightness testing.

Due to the giant size of the aircraft it is impossible to check it by any other means. In the past the tightness checking was done by dousing the entire body with water. This process not only took many days to complete but also took many hours on a single area if any kind of suspicion was raised. The cost to carry out the test was not only expensive but it also caused the price of the aircraft to soar to such heights even the best airlines were not able to make the purchases in bulk.

Today with the method of checking tightness of hatch with ultrasound, quality testing is done only in a matter of hours and the price for these tests has come crashing down to only some mere dollars per aircraft. This process has not only made the prices of aircrafts come down but it has also made it possible to manufacture speedily. This process is not only known to be the longest lasting process, but it is also the cheapest.