What ever Overrun Engineer says is gospel. Right?
But pragmatically the PCN of a runway is something ATC know nothing about, and a one off landing will only reduce the life expectancy of the pavement. So, if you want to operate a 48 ACN a/c off a 24 PCN runway just the once I woudn't worry. (Unless colleages have been doing the same foe years).
If you fly a B777 then be afraid, be very afraid.. but otherwise it's a technical foul not a life or death event.
BTW where? what and when?
Sir George Cayley