There are many questions about how the TSA will enforce the proposed Large Aircraft Security Program regulations and how the agency will know if someone isn’t complying. Will a government official, for example, approach an operator and ask if he has complied with the TSA regulations before takeoff? Will there be a box on the flight plan form? Will air traffic controllers ask for TSA clearances? What if the required biennial audit reveals past non-compliance? What if an operator allows on board someone who is on the TSA watch/no-fly list?
The TSA does have enforcement powers, granted by the Aviation and Transportation Security Act of 2001. These powers formerly belonged to the FAA. The TSA can impose civil penalties of up to $25,000 per violation for aircraft operators and up to $10,000 per violation for individuals.
How the TSA catches a violator is a different question, one that is not addressed in the LASP proposal.