Service difficulty report · Screw · Tcraft BC12D

Difficulty date
November 7, 2004
Submitted
November 8, 2004
Operation
General aviation
Aircraft
N5031M
Make and model
Tcraft BC12D
Aircraft serial
10331
Aircraft time
1,550 hours
Part
Screw
Part number
AA819
Condition
Broken
Location
Wing
Part time
1,550 hours
Stage of operation
IN
How discovered
V
Nature of condition
O
Precautionary procedure
K

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

WHILE REMOVING THE JURY STRUTS BEFORE REMOVING THE WINGS FOR RECOVER, WHEN THE BOLT HOLDING THE JURY STRUT TO THE ADJUSTING SCREW AT THE FRONT SPAR WAS REMOVED THE ADJUSTING SCREW WAS IN TWO PIECES. THE EAR THAT IS WELDED TO THE SCREW BROKE JUST ABOVE THE WELD. THE DESIGN OF THE ADJUSTING SCREW IS SUCH THAT THE THREADED PART POINTS STRAIGHT UP AND IS OPEN FOR MOISTURE AND/OR DIRT TO ACCUMULATE INSIDE THE SCREW.