Cat Driver,
I hav'nt read through all the previous post's but from memory I dont think anybody has said that an unlocked primer WILL on it's own cause an engine failure. What we are saying is that it MAY cause engine failure and that, if for example the mixture was already to rich this possibility is increased. As you have stated, at idle power an unlocked primer CAN cause engine failure. Why temp fate by pulling it out in flight?. Does it demonstrate anything to the student that you cant show them on the ground?.To get back to the origional question, which if I remember was should we check the primer after an engine failure, I think we are all agreed that it can at least contribute to a complete failure so YES we should check that it is locked as part of the restart drill.
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stop animal testing
use taliban prisoners instead