Aircraft Maintenance and Serviceability
It's true that unless an airplane is maintained it could pose a danger to the safety of its passengers and to everyone and everything else on board. There have been airplane crashes that have been reported that were caused by poor maintenance of aircraft. This is a sad thing because the safety of the passengers and the crew should come before the aircraft takes flight.
However, it is more comforting to know that very few airplanes crash and cause a danger to the people on board. Statistics actually show that you are safer up in the air than on the road.
Nevertheless, this page will give you a great information to help you get on the right plane and avoid any danger on the airplane due to it being maintained poorly.
Firstly, the best airlines to choose are the most popular ones and those that have shown a consistence adherence to quality and excellent service. These airlines may be more expensive but no money can ever replace a lost or severely damaged life.
Airlines that have been around for a long time and are loved the most became that way because their service is excellent.
That also means that they take time to make sure their airplanes are well-maintained and safe for both the passenger and the crew.
It is rather difficult to get official statistics of airline safety. Most airlines won't release such information but the best thing you can do is arm yourself with knowledge.
Airplanes, mechanically, are very safe today. Safety may be compromised by human errors. Airline pilots use the term "situational awareness" to mean that the pilot is aware of everything that is going on in and outside the airplane. There are many controls on the aircraft and a good pilot will have his brain monitoring all of them.
Airplane manufacturers are constantly improving the pilots ability to have more situational awareness. Some are also considering placing devices on the aircraft that can predict dangers before they happen so more time is allowed to react to it.
All in all, there are many improvements going on to make flying safer than ever.