I have been one many 121 interviews.....successful at most, offers with many...Turned down by many....I am not proclaiming that I know all in this subject, I have done a lot of research had alot of interview training, coaching and over 20 interview experiences with 121 ops. I am only trying shed some light...( and I know I will catch some heat) Bring it on!
You should only ask questions that show that you are very interested in that company and its success....IT SHOULD SHOW YOU ARE EXCITED TO BE THERE and can make a positive contribution to the companies needs, you should ask Q's that promote you're understanding of the job you are interviewing for and how you can help fill the company needs...Everything you say, they way you look, dress, body language all tells the interviewers a little more about you......how you think, whats important to you, and if they should hire you....
Ask about company growth, acft numbers, adding cities....there are dozens of things, one of the best questions you can ask is: what are the best qualities that you like to see from you're (fill in the job you are trying to get). Ask about the company culture etc....standard benefit Q's
What ever you do, don't get to close to question that become to revealing as to your personal needs "from" the company.....these only make the interviewer second guess how you may act as an employee and speculate what negative impact you might bring as a result of employment....
You will have pleanty of time to learn everything you want or need to know from other employees before and after an offer....If there is any thing I have learned from all these interviews, is that you are being interviwed the moment you step onto the company property till you leave the location. You never know who is watching you when you least expect it, your interaction with others, manors, dress, smoker or not etc....really this does happen and it all goes to building a mental picture the HR folks will have about you....
make good eye contact, firm but moderate hand shake, sit up-right but relaxed, be a Good listener, dont interrupt, re-enforce what the interviewer has said about important responsibility they need the employee to perform...everything you say needs to be positive, even when they ask you about negative things...alway find away to turn it around and tell them what you learned from your mistake...positive! Now go get em! Good luck!