Roger Moore
Active Member
Upon disasembly of my RV4 and inspection of my broken upper weldments it is apparent the failure was caused by faulty manufacture of the parts at Van's. Breakage appears to be caused by christilization of the welds. If you are flying a pre 1988 RV4 kit with these early weldments I recommend no aerobatics and immediate inspection. Van's has the pictures of the breakage and have told me they will provide them upon request. Again this is a potentially fatal flaw and not to be taken lightly. Roger Moore N67PM