I am close to 44, quite experienced in aviation.
I was thinking to move as I am a qualified air traffic controller, could help?
You're likely eligible to apply using the "Express Entry" system under the Federal Skilled Worker (FSW) program. This is an online application system where you enter your profile and optionally connect with potential employers through a Job Bank.
The Express Entry system will assign you "points" based on your experience, language skills, level of education, job offers (if any), age, amount of money/savings you will be bringing to Canada, etc. If you have enough points, you will be invited to come to Canada as a permanent resident.
The first step for you is to take an English language exam. They accept IELTS
General Training exam scores, but not the IELTS
Academic scores nor TOELF scores. If you speak some French as well, it's beneficial to also take the TEF exam. More info:
Language testing: skilled immigrants (Express Entry)
If you're married and your partner is planning to immigrate with you, then have your partner take the language exams as well.
Once you have your exam scores (or at least have a good estimate of the IELTS scores you will get), you can check your eligibility to apply:
Do you want to come to Canada as a skilled immigrant?
When you get to the skills section, "Air Traffic Controllers and related positions" are listed in the National Occupational Classification (NOC) as code 2272, skill type "NOC B" (technical jobs and skilled trades).
(Pilots are NOC 2271, "Air pilots, flight engineers and flying instructors", skill type "NOC B").
After the eligibility check, you will be given instructions on creating your Express Entry profile. Your profile will be put into a "pool" for selection. If you don't get selected for one year, you'll have to start over and create a new profile.
From what I hear, right now the immigration policy is quite open -- i.e., you wont need as many "points" as in previous years to receive an invitation to come.
Good luck!