Hi, just joined recently and grabbed the 126.96.36.199 trainer. Was wondering why you die when jumping from helicopter with health enabled?
This question was asked long ago when the trainer and game first came out. If I remember correctly there are certain events that auto-trigger the death animation. Things like very high speed motorcycle crashes and falling long distances are automatically viewed by the game as, "you are dead!" It has nothing to do with health.
EDIT: Before you ask, the motorcycle deaths happen at random, so you might not see it often. Just run the fastest bike into a few moving cars and sooner or later you will die.