What was found
ON TAKEOFF AT 1200 FT AGL THE EGT ON NR 1 ENG WENT TO 960 DEGREES INDICATED VERY RAPIDLY. TOOK 4 THROTTLE WIDTHS TO BRING THE EGT BACK INTO PARAMETERS AND ENG RUNNING SMOOTLY. DUMPED APPROX 20K LBS OF FUEL. INITIAL VISUAL INSPECTION REVEALED SEVERAL BROKEN PNEU DUCT SUPPORT STRUTS, MANY BROKEN CLAMPS, RUPTURED HIGH PRESSURE TURBINE COOLING DUCT AT 12 O'CLOCK POS BROKEN FIRE LOOP SUPPORT TUBE ETC AND METAL IN TAILPIPE. INTERROGATED NR 1 EGT INDICATOR, DATA SHOWED 975 DEG FOR 10 SEC.