One piece of advice for anyone that works in the airline industry (PSA or any other) is to keep a good 10+ year background record on yourself.

Personally, I called all of my former employers and asked them what they showed for my hire and discharge date. I wanted to make sure that my application will match exactly what my new employer will be able to find when they do any background checks.

Some places require you to list the date, not just the month and year. Be sure you have this and it is correct.

Print it, email it to yourself, and keep a couple copies. Then, when you go to the next job, you still have it. Just update it when you move from one address to another and from one job to the next.

Keep it consistent.

If you say that you started in March of 2012, and the record check says that you started in May of 2012, that can raise some red flags. Don't lose a job for a stupid mistake.