Trust me I know 16 hour duty day is more than enough . I have called in fatigue few times already but where I am working the company had tried few times to send me on a trip where I only had 8 hours of rest after an 11 hours of flying the day before ( since it is international and a three crew flying ) there are no specifics in the regs about rest requirements. I have emailed the FAA almost two weeks ago and they still yet to respond to me.
Thanks guys