Change that increases fatigue levels is NOT good change. Only a disengenuous idiot could try and sell that with a straight face. If you bothered to read the ATA proposal you'll see that they claim their proposals are also "science" based and they want 11 hours fly time per day and 15 hours of duty day. I suppose that's ok too since it's "science-based?"

The 9 hour fly day has NOTHING to do with science, but is ALL about being able to cram more hours into less workdays and compromise safety by flying tired.

Both the ATA and ALPA are FOS and can create whatever "science-based" numbers they want.

I don't need some geek in a lab coat to do a study to come up with whatever numbers the payer wants.

Over 30 years of flying experience flying heavy jets internationally tells me that 8 hours behind the controls is enough.

This "science" is so fuzzy, it probably came out of Al Gore's ass.