I've heard that no one technically dies 'in flight', they have to be declared dead by some official - possibly at a hospital.
When I used to maintain my CPR cert, I was always told that in a real heart attack CPR won't usually do any good.
And now we get to define what a heart attack really is.... and what a "Real" heart attack is.
Is it a myocardial infarction?
Is it cardiac arrest?
Lay terms dont always convey the problem effectively. I have a problem with a CPR instructor using the term heart attack to describe a pulseless patient or cardiac arrest, because not all are caused by myocardial infarction.
Personally I wouldn't perform CPR on someone who has had a heart attack (myocardial infarction) who happens to be sitting up talking to me.. and has a pulse and all that... They might get mad and hit me or something. See attached graphic.
Real life? I can count on one hand the number of folks I've had who were prehospital CPR who left the hospital with no significant impairment. I can count on two hands the number who left the hospital alive. It helps to be young and otherwise healthy.
In hospital, a little better odds but only in a very select subset of patients - airway obstruction and sudden arrhythmias that occur during a procedure or in a monitored ICU... Cardiac arrest as the final scene in a prolonged severe course of illness NEVER leaves the hospital alive.
Facts of this case are the pilot was in the 60-65 age range, had a 1st class medical every 6 months and experienced sudden incapacitation.
My condolences to his family and colleagues, and while I did not know him personally, quite a few of my friends are based out of his hub and likely knew him well.