Hmm.. temperatures in New York today about 85°F (ca 30°C) yes not a lot of power to spare although of course there could very well be a entirely different reason for the crash, I´m just saying.
For those that don´t know the way to tell it has a C20B engine is because it has dual exhaust stacks and not the one wide that the C28 & C30 have!
What always bugs me is when the press brings up the age of the aircraft, like in this case the airframe was 28 yrs old. It does not matter at all. Probably about 75% of the parts that total up the value of this aircraft were less than 10 years old. A data plate, some windows and doors and sheetmetal usually will not cause the aircraft to crash.