garn,
That posting raises the confusion that seems inherent in British dual meaning of the term "Engineer"
To most of the world, folks who maintain aircraft with wrenches and stuff are called "mechanics" and are paid as skilled manual workers. It is honorable and good work, in line with what a fellow in a power plant gets for maintaining the expensive generators and such. It is a "blue collar" job in US parlance. These people are called "Engineers" in the UK.
In the entire world's language, a person college-trained in mathematics and physical science after 4 or 5 years attains the ability to design machines and is called an "Engineer". This "engineer" is a white collar person who works in management, and who can (and often does) rise to run design sections and even become CEO of manufacturing companies. This person has perhaps ten times the academic training of a "mechanic" and this true "engineer" is about the same professional skill level as an accountant or as a teacher.
A "mechanic" gets perhaps 40% of the salary of an "Engineer".
The posting that you are reading is for a "mechanic." I strongly encourage folks who have strong mechanical skills, strong math and science backgrounds to become "engineers" and only become "mechanics" if they cannot put up with the academic rigor. This is what Bravo 73 means when he says "do you want to build helicopters (ie design them, in which case work toward becoming an "engineer") or fix them (ie be a mechanic)."