Glassing a 1-piece wing's centre join reinforces just that - the centre join. It adds NOTHING to the unglassed wing beyond the bandage, so if the wing is inherently weak - as is possibly the case here - then it will still break outboard of the bandage/joiner.

If you are joining 2 structurally sound wing panels, then a bandage certainly adds strength to that join, as Deadbeat points out. Most of the failures reported on the Lancairs have been where the wing brace ends, therefore the basic structure is failing where it has no joiner to help take the loads.

I'm not discouraging glassed bandages on centre sections, just don't want people to expect this makes the WHOLE wing somehow stronger! Sure, there's all the other issues like poor gluing to add in, but at the end of the day don't think a glass bandage will ELIMINATE this wing's shortcomings - only a stronger spar construction will do that.

Cam

BTW joiner tubes are not ALWAYS the spar, as implied - but a hollow spar CAN be used as a joiner tube sometimes.