Guppy..Pratt equiped aircraft that I have flown...either 8% for jets or 12% for Tprops. So as you probably know, not a big push for the starter. Compared to say Garretts...
I guess the way it's taught is you either get a hung start prior to to introducing fuel, or if you have introduced fuel, maybe the igniters didn't light them off, or any number of other factors where a burn didn't happen...once you've disengaged the motor, probably all unignited fuel has been blown through
After a light off, if the starter doesn't push things farther along after then the classic hot start seems to happen, alot of fire and not enough air to blow it through...
Not sure how to differentiate a hung start after light off, and a hot start, if in both cases the temp increases. So it's treated as a hot start.
Classic cases of the NICAD or GPU dropping off in the start sequence right after light off, and no power to run the starter, while rare, gives one pause to consider the solution...fuel cut off, and hope that's enough...
Thanks for the explanations.