What was found
(CAN) DURING A VERTICAL STAB SPAR INSPECTION PER CESSNA CARAVAN 208B SUPPLEMENTAL INSPECTION NUMBER 55-30-01, PART OF A 20,000 HOUR INSPECTION, FRETTING DAMAGE WAS FOUND AT VERTICAL STABILIZER REAR SPAR WEB AT W.L. 134.00. THERE WAS NO CORROSION DETECTED WHERE THE FRETTING WAS FOUND. SEE ATTACHED PICTURES. A REPAIR WAS OBTAINED FROM CESSNA AIRCRAFT COMPANY, STRUCTURES REPORT NR S-208B-0470/02RD. BLEND DEPTH WAS 0.015 INCH AT LT SIDE OF WEB SPAR AND 0.006 INCH AT RT SIDE OF WEB SPAR. REPAIR REPORT S-208B-0470/02RD STATED TO BLEND THE FRETTING, EDDY CURRENT FOR CRACKS & REPEAT AS PER 208 MM 20-31-00. THE REPAIR WAS COMPLETED AND EDDY CURRENT TESTED NO CRACKS. (TC 20091022005)