Look, Guys:
As a former 91/135 Jet PIC and now an AirTran 121 FO, I feel pretty qualified to speak on this subject. I have tried hard now for the past two years to get interviews for a number of great pilots, only to have them rejected out-of-hand because they don't meet the 121 requirement. I myself would not qualify for an interview today at AirTran, even though I have over 500 hrs of jet PIC and over 1500 SIC in the B717! So believe me, I think the policy is misguided.
No one is downplaying the skills and abilities of the non-121 guys, and no one is saying that 121 is "rocket science". It is just different, and the hiring gurus seem to think that the deck will be more stacked in their favor if, all things are equal, a guy has airline PIC time.
The reasoning behind seems to stem from concerns regarding the quick upgrade (projected to be 18 months for today's newhires) and does not allowing for much "seasoning". Most of the upgrade washouts, from what I am hearing, stem not from a lack of technical skill or ability (flying the plane, working the FMS, etc) but with command decision-making in a 121 environment. Those doing the "judging" are pretty harsh; many of them spent 14 years in the right seat of a DC9 before upgrade, and they seem to have real concerns about releasing someone to the left seat after only two years. Whether this concern is valid or not, well, I don;t think I am fully qualified to judge (I haven't been through the upgrade yet) but that is where some of it seems to stem from.
While I think that 135 and 91 flights are certainly equally challenging in their own distinct ways (a past pop-up trip to Tegucigalpa, Honduras comes to mind), there are different decisions that have to be made in a fast-paced 121 environment, and somehow, AirTran has come to place more value on 121 operational experience.
Just like an experienced 91/135 guy knows that when you hear, "We need to depart at 0600 and we are going to Teterboro, or Dulles, and we may have to stop enroute to pick up Jim Bob in Alamosa" you know immediately that:
1) You have three different flights to plan, and three flight plans to file, and there are right away some "red flags" to address, namely-
2) You probably can't fuel for TEB and still make landing weight to pick up Jim Bob in nearby Alamosa, so you
3) Start checking to make sure Alamosa has Jet A, that they will be open at that time, and that you can make it out of there topped off with your TEB fuel and meet second segment climb gradient (you can't) so you-
4) Call the client, and diplomatically inform him of the problem. He decides to send Jim Bob on "the skeds", and you can forget about Alamosa.
Meanwhile, the guy with only 121 time, is still spinning his wheels planning the trip to Alamosa, which isn;t even going to happen now.
Well, in our operation, a scheduled 42 minute turn often becomes a 25 minute turn, sometimes with an equipment change and/or crew change, and in that regard, the the past familiarity with 121 operations is a definite plus when it comes to speed-reading the Dispatch Release, the Log, etc. and identifying those same type of "red flags" and solving those problems before they occur, in a very time-compressed scenario.
Is 121 flying "easier"? No, I don;t think either one is easier or harder, they are just different, and like some employers want to hire a FO with "Learjet experience" AirTran is saying they want to hire pilots with airline command experience. Do I agree with either, nope. But, in this market, they can do it. As the market chanegs, so will these types of requirements.