And experts say the trend is likely to continue, as it takes years to train airline professionals — and because pilots must retire by law at the age of 65 and air traffic controllers at 56.

https://www.msn.com/en-ca/money/companies/aviation-industry-is-short-32-000-pilots-mechanics-and-air-traffic-controllers-as-pete-buttigieg-says-his-office-is-actively-investigating-airlines-for-unrealistic-scheduling/ar-AA1emHPT?