Originally Posted by
Parrothead
Oh boy.
The rules are black and white. Part 121 and Part 135 are printed in the same book and on the same paper (at least they used to be before the .pdf was invented). They are not intentionally violated, but rather the exceptions as referenced in the reg are applied, i.e. extenuating circumstances beyond operator's control. Where are you finding this 12 hour number? If a Pt. 121 crew flies in excess of 12 hours due to circumstances not in their control they are given 16 hours of compensatory rest. This is not a violation of the reg, rather completely in compliance with the exceptions as published. Also you must look at the type of operation; scheduled, on-demand, supplemental. Are we talking a regularly scheduled cargo run or a on-call charter flight? different deal.
Maybe you can provide more info about your graduate study. What are you trying to identify? What is your thesis statement? Bottom line we fly a lot and sleep little and train regularly for it.
Once you think you've figured it out go talk with a local FSDO POI, then you'll really be confused and chasing ideas you can't find referenced in any publication! Good luck.
I shouldn't say "violations". I meant "exceptions", as you pointed out. What I was trying to do is to have a mathematical model that can produce a crew schedule, that is as close to real-world-feasibility as possible. Because the real world rules are complicated, and the model can't handle them all together. One way to do it is to use some rules in the model, and then manually modify the produced schedule to make sure other rules. The subject is the fractional program (only fractional, no charter). So I try to understand all rules first, and then put a set of rules into the model such that, the model will produce a schedule that requires the minimum manual adjustment afterwards. It's not like to try not to follow the rules or break the law or anything like that. I should say this in my first post, but just too lazy to type all that. In any case, all your feedbacks are greatly appreciated.