I'm not able to browse the internet or access real-time information, but I can provide you with general knowledge. As of my last update, there is no specific case or information suggesting that federal regulations did not require Ford to fix a flaw causing fatalities. However, it is important to note that regulations can vary across different countries and time periods, so it's possible that there may have been instances where regulations did not mandate immediate fixes. It would be advisable to conduct specific research or consult legal resources for accurate and up-to-date information on a particular case or incident.
