What was found
FLT CREW REPORTED, AFTER ROTATION, RT DUCT PRESSURE EXCEEDED 100 PSI, ALSO WITH NR 3 ENG BLEED CLOSED FOR APPROX 2 MIN NR 3 ENG STRUT OHEAT LIGHT ILLUMINATED, CREW RETARDED THROTTLE & LIGHT STAYED ILLUMINATED. CREW RETURNED & MADE AN UNEVENTFUL OWEIGHT LANDING. MX PERFORMED AN OWEIGHT LANDING INSP PER MM, NO DEFECTS NOTED. MX TROUBLESHOT & INSP REVEALED PNEUMATIC LEAKS. FOUND NR 3 ENG BLEED VALVE & 13TH STAGE DUCT CLAMPS LOOSE. MX TIGHTENED LOOSE CLAMPS IAW SRM. MX R & R HIGH PRESSURE REGULATOR & 13TH STAGE MODULATING VALVES PER MM. MX RAN ENGINES AT PART POWER & TAKEOFF FOR FIVE MINUTES IAW MM. REPLACED VALVES & TIGHTEN CLAMPS OPS & LEAK CKD NORMAL. A/C RETURNED TO SERVICE. (M)