What was found
DURING INSPECTION AND LOADING OF HORIZONTAL STABILIZER, STRUCTURAL NOISE IN FORM OF KNOCKS, SNAPPING, AND/OR CREAKING (OUTSIDE OF NORMAL SKIN OIL CANNING EVIDENT ON THIS MODEL A/C) EXISTING IN HORIZ STAB. NOISE HAS BEEN TRACED TO MOVEMENT AT HORIZ. STAB. FRONT SPAR-TO-FUSELAGE ATTACH, NAS 1306-3, BOLTS (2 EACH). BOLT REMOVAL HAS DISCLOSED NO CRACKS IN STRUCTURE TO DATE. IT APPEARS THIS IS A DESIGNED LOOSE FIT JOINT WITH BOLT GRIP THAT IS SLIGHTLY TOO LONG. ADDITION OF ONE WASHER AND RETORQUE OF NUT WILL RESTORE BOLT CLAMP-UP AND RESOLVE PROBLEM.