Looks right to me. 10% would be 8,000 per year, so 9% is a bit less than that.
I’ve heard that airlines/airports are having trouble getting maintenance and flight line employees because so many people can’t pass a drug test. My oldest is thinking of becoming an airplane mechanic when she gets out of the military; there are scads of jobs.
Highest turnover is probably in the call centers. If your call center personnel have good morale, you probably need to replace the local management.
A lot of airlines have been outsourcing their maintenance. There’s a big fight over at Southwest about that now. But A&E certification would probably be a marketable skill.