Couldn’t the 91.151 endurance requirement be “side stepped” if one were to operate under the definition as a local flight??
...1)Local operations mean operations performed by aircraft which:(i) Operate in the local traffic pattern or within sight of the airport;
(ii) Are known to be departing for, or arriving from flight in local practice areas located within a 20-mile radius of the airport; or
(iii) Execute simulated instrument approaches or low passes at the airport.