I have no doubt that BVM has fixed the problem at production stage BUT unless the exact history of the booms is known the mod.should be incorporated at the earliest opportunity as I am sure would be done in full size aviation. Posts subsequent to mine have proven my point and clearly the Kingcat boom problem is rather more extensive than is suggested on BVM's web site.

If the nature of the boom construction has been problematic why not revert to the fiberglass moulding as on the Bobcat, the booms on my two examples are absolutely sound.

Perhaps there should be a simple assesment, : what are the possible consequences of a boom failure and what is the downside of incorporating the mod. which should prevent that failure. No contest.

Regards,

David Gladwin