FPE's were never recalled. But the stablock breakers have a reputation for loosening over time and overheating, sometimes catching fire. Since there was no recall, the consumer products safety people didn't think the data suggested emminent danger.
Is the hazard higher than with other panels, probably a little but there's always some risk with electricity.
If they're willing to pay for something to be done, I'd think checking breakers with an ir thermometer under load would be right, maybe looking for signs of overheating at the busses.
But most importantly, put it in writing that you don't know what will happen tomorrow or the next day, just what it looked like today.
Just my free advice...worth every penny.
