DV 3 Compass failures
I did say 'MY P8 Compass' not those 'standby types' as fitted to most GA aircraft.
Actually never had a magnetic compass fail in anything in over 40 years,even though some were hard to read they were so old.
As a very experienced BA Concorde pilot once stated to me:-
You are either VMC, and can see where you are and where you are going, or your IMC and should be operating as such (with the required equipment)
Its the bit in-between that causes the problems.
I happen to think that a simple GPS is quite a useful aid to flying in the UK,but only if those using them understand the limitations, and are 'trained' to plan accordingly.