eagle operates under a combination of the two rules down there. For example the rest requirements require 18 hours of rest and no regional in the world will give their crew members 18 hours as a minimum every night (in SJU the longetst overnights were Nevis-12 hours and Canaun-13 hours cause they are day vfr only airports). They operate rest requirements under normal domestic rules. However, they dispatch fuel and alternates under flag rules. So instead of having your 45 minutes of reserve fuel like everyone else, they only have to give you 10% of your flight time. On a 6 hour trans-atlantic crossing this makes sense, but on a 30 minute blocked tortola turn it comes out to a whole 3 minutes. It makes no sense how they can do some of it under domestic and other under flag.