1. CC are given access to the FD anyway to deliver refreshments so the risk of one with evil intent is not much changed whether there to act as door opener or to deliver a cup of coffee.
And 1000s of FOs have access to the cockpit too every day and that risk had not changed till it happened
The risk of a rogue CC because of the ease of becoming CC compared to going through all the training to gain an ATPL surely has to be greater?
Like with the FO because it hasn't happened does not mean it won't happen
You are replacing one risk factor with another greater risk to remove a tiny risk factor of another FO doing the same awful deed. That stinks of knee jerk reaction public perception reaction with no statistical in crease in safety
Infact by placing CC in the flight deck with only one pilot there alone you have probably increase the chance of a terrorist crash slightly higher than the chance of another FO doing the same
it provides another layer of protection; one that quite probably would have prevented Lubitz from doing what he did, or at least not as easily.
What would have prevented Lubitz doing what he did would have been the Captain being able to access the cockpit and the rogue FO not having the ability to lock him out! A terrorist within using a system designed to stop a terrorist without. The police discovered that he had been refreshing his knowledge of the locking over ride systems on his computer at home in what was a planned suicide mass murder