wrote:
Okay Jose, how does a prop lock not secure the airplane? Did I miss
something here?

It will slow a thief down, but like any other device it can be
defeated. Bolt cutters, torches, or prop removal will defeat a prop
lock. Of course it's a bit harder than defeating the door locks on a
150, but it is hardly secure. (I have no firsthand knowledge but I am
told that on some aircraft the prop can be removed and reattached in
less time than it takes to preflight)

We won't count the fact that every lock has a key, and every key can be
copied. (in fact, it is likely that maintanance has a copy of the key
on some rack in the shop)

As for causing the would-be thief to go elsewhere, this won't apply if
every plane is prop-locked, which is the proposal. And although it may
stop a casual joy-rider with no connections, it won't stop a terrorist,
drug lord, or aviation insider.

Now, just what are we trying to protect, against whom, at what total
cost?

Jose