Fairly respectable second segment too, but the 14,000 max operating level is a bit of a worry.
Looks like a great aircraft for rattling around Eastern Europe over 100-150 mile sectors.
I suspect you'd find anything beyond ISA would be a real test. WAT gets em every time. But they were designed for the conditions ISA+20 has half the population in hospital with heat stroke while we're just taking our cardies off.