CAB SEPARATED FROM CHASSIS. CAB IS ATTACHED TO CHASSIS AT 4 FLANGES WELDED TO FRAME. 2 EACH 10 MM BOLTS CONNECT CAB TO EACH FLANGE. A 71 MM HOLE EXISTS IN FLANGE BETWEEN THE 2 EACH 13 MM HOLES FOR THE 10 MM BOLTS. ONLY 6 MM OF FLANGE STEEL EXISTS BETWEEN 13 MM HOLES AND 71 MM HOLE. CAB SEPARATED BY TEARING 10 MM BOLT NUTS THROUGH THE 13 MM HOLES AT THE 6 MM DIMENSION. IT HAS BEEN MY EXPERIENCE IN AIRCRAFT STRUCTUREAL REPAIR THAT THE MINIMUM DIMENSION FOR HOLE SPACING IS 3 HOLE DIAMETERS (I.E., HOLE SPACING SHOULD HAVE BEEN APPROXIMATELY 30 MM INSTEAD OF 6 MM).