What was found
WHILE ACCOMPLISHING SEB ON CONTROL YOKE, FOUND WATER WHEN INSP HOLE WAS DRILLED AT BASE OF CENTER TUBE. .2500 CUP OF BLACK RESIDUE WAS FOUND WHEN TUBE WAS CUT OPEN. INSIDE OF CONTROL YOKE TUBE WAS RUSTED MODERATELY THE FULL LENGTH OF CENTER TUBE. NO LEAK IN FIREWALL OR WINDSHIELD WERE FOUND TO ACCOUNT FOR WATER ENTRY. AC WAS PURCHASED DISASSEMBLED 12 YEARS AGO, POSSIBLY WATER WAS INTRODUCED AT THAT TIME. INSTALLED SERVICEABLE YOKE AND ACCOMPLISHED SEB SUCCESSFULLY. (CE01200502663) (K)