Originally Posted by
EasternATC
Years ago, an ASI told me it was typically six months, and this was derived from NTSB rulings on freshness of the offense. YMMV.
Generally yes, but there are a few exceptions. Google FAA Order 2150.3. Search for "time limit" within. Easy to find. If it is one of those exceptions, it's likely one of those "crime of the century" type deals, something that affected or had the potential to affect a lot of people with blatant reckless activity (not just breaking regs, but premeditated). They are rare. Civil penalties against companies are a bit different.