In all, the company operated the helicopter on at least 103 flights when it was not in compliance with Federal Aviation Regulations between June 29 and Sept. 9, 2008. At least four of these operations were conducted under Part 135 (Commuter and On-Demand Operations) of the Federal Aviation Regulations. 

The FAA also alleges that Hillsboro mechanics failed to perform the required inspections after specified flight intervals on another Jet Ranger helicopter when the aircraft returned to service after maintenance. Hillsboro operated the aircraft on at least 430 flights, including at least 349 revenue flights under Part 135 between Jan. 13 and Sept. 7, 2008. 

The third violation involved the operation of another Jet Ranger on a passenger-carrying flight, July 8, 2008. The pilot flew under the Interstate 5 and 205 highway bridges over the Columbia River in Portland, Ore. The FAA alleged the flight endangered the lives and property of others, because it was conducted within 500 feet of a structure, and at a low altitude where a safe emergency landing might not have been possible. 

Hillsboro Aviation has been in operation in the general aviation industry for over 30 years. They are based out of Portland-Hillsboro (HIO) and Portland-Troutdale (TTD) airports outside of Portland, Oregon. The company offers charter services in which they have a fleet of Bell helicopters, an FAA-certified aircraft and helicopter repair station, aircraft and aviations sales and flight training.