Par ailleurs, la pale d'hélice en traversant le fuselage de l'avion a sectionné les câbles d'alimentation des enregistreurs de vol.
De ce fait, aucune donnée de l'événement n'a été enregistrée
The power supply cables for the flight recorders was severed by the prop blade that traversed the fuselage, thus no information of the event was recorded.
...or it could have been once every-time the prop exceeded a certain amount of torque.
You may be onto something. The 532 was a boosted engine, gave out 1910 HP dry but 2100 HP wet as I recall. The 529 was a restored power engine, 1910 dry/1990 wet.
For what it's worth, I think Rudy has the sequence of the break-up correct.