The aviation industry, as part of the public transport industry, is highly invested with public interest, and safety is always a great concern. Accidents, whether due to human or machine error, can be costly in terms of the lives that could be claimed. That is why electrical safety is paramount in the aviation industry, and one of the ways to protect against electrical hazards and dangers is to perform regular electrical maintenance checks.
Aircraft maintenance is specialized work and is not something that just anybody can perform, not even regular electricians. A good understanding, familiarity, and extensive education and training are needed, not just in aircraft electrical systems, but also in aircraft design and function, as well as mechanical systems, engine, and design.
All aircraft should be inspected and examined before departure, and while this often takes place behind the scenes, may also take place on the runway. Not only can this save the airline a lot because of the immediate response to the need for upgrades or replacements which can prevent even costlier repairs later on, but regular electrical maintenance can also save lives.
Electricians know that the most well-designed electrical system can still be prone to accidents, faulty wiring, and the need for repairs over time. Things simply do not last forever. Periodic maintenance can nip problems in the bud whenever they do arise, and prevent electrical issues from growing to the point where more extensive work needs to be done. Most importantly, however, preventive electrical maintenance helps the aviation industry live up to its implied contract to carry its passengers from the point of departure to the point of disembarkation as safely as possible.