Two BV234LRs belonging to British Airways Helicopters / British International Helicopters went down in the North Sea. Apart from the one which had a rotor de-phase in flight when the forward gearbox failed, killing 45 of the 47 on board just before landing in Shetland, another ditched under control with partial and intermittant hydraulic jamming and then sailed along under power for some time. However the rear ramp seal was defective and it slowly filled with water and eventually overturned, but long after all those on board had evacuated. It was recovered, so presumably that is the one Colombia have.
As far as in flight diversions were happening, they were almost all due to spurious operation of the chip warning system. That of course did not operate the one time it was needed........
I flew about 2000 hours in those beasts, any other old timers about?