One reason the regulators issued such a severe punishment was that it was the second time they had discovered many of the illegal practices.
In its lawsuit, the group contends that federal regulators have publicly issued "false and misleading statements" about the medical benefits of marijuana.
In December, regulators issued a cease and desist order, trying to stop any further erosion of the company's assets.
On July 30, when the regulators issued the results of their investigation saying the plant was safe, they also warned that improvements were needed.
The regulators will now issue an airworthiness directive to the type certificate holder and to all owners globally.
Firestone declined to comment on whether it alerted its customers before regulators issued the advisory.
Your regulator will issue a new environmental permit to the new operator.
Your regulator can issue a number of different notices to make you comply with environmental permitting.
Your regulator can issue you with an information notice that requires you to provide information within a certain time.
In the immediate aftermath, federal regulators and elected officials issued some bold pronouncements about separating primary and backup systems.