How close was STS-27 to being lost during reentry in a similar way to Colombia, during STS-107?

STS-27 was very close in suffering the same destruction as Columbia would, fifteen years later. This was only the second STS mission after Challenger's destruction.On ascent, ablative insulating material from the right-hand solid rocket booster nose cap hit the Orbiter's starboard tiles about 85 seconds into the flight.Astronaut Mike Mullane, one of the crewmembers on