Originally Posted by SaltyDog

UPS Off Duty Flying
It is the crewmember's responsibility to assure he is available and within FAA guidelines when reporting for work regardless of any flying activity outside of Company business. However, no crewmember shall perform flying, which would count toward his maximum flight/duty limitation under the FARs. This does not restrict the flying of military aircraft by a crewmember affiliated with a military guard or reserve organization
So, one may want to read this FAA document regarding Part 91 to determine your status. https://www.faa.gov/about/office_org...rpretation.pdf