Longeron
Repair
Downward view showing splice welds, plate welds and cross tube.
After 385 airframe hours, the welded tailwheel attach assembly broke.  Failure occurred while taxiing for takeoff.

The tail dropped and I had no rudder control.  Field inspection showed the tailwheel pushed up to the bottom of the rudder and this assembly was resting on the ground.
Grime indicates that the tail-post tube broke first which then overstressed the longerons.  They broke several weeks later during taxi.
Broken tube assembly removed.
The planned repair illustrated by this sketch was
closely followed during the actual repair.
Splice tubes in position for welding
Upward view showing plate onto which a future flat tailwheel spring will be mounted.
Aft view
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Within five days of the break, I was airborne again.  Have since put 77hours on this reapir bringing the total airframe hours to 462 as of 03/04/04.